CLASS News 2010

(04/30/10) DMSP On-orbit Attitude Control Test for F-15
(04/30/10) Slight Format Change for IASI Data
(03/01/10) Jason-2 Cycle 60 Reprocessed IGDR Data
(01/27/10) Jason-2 Cycle 57 Reprocessed IGDR Data
(01/21/10) Jason-2 Cycle 56 Reprocessed IGDR Data

CLASS News 2009

(04/30/10) DMSP On-orbit Attitude Control Test for F-15

During 10-11 March 2010 the DMSP program office and NOAA DMSP Operations conducted a 24-hour operational test of "gyro-less" attitude control software on DMSP F-15. Preliminary results indicate minimal or no impact to users. For more details please see http://www.ssd.noaa.gov/PS/SATS/MESS/MSG0691518.01.txt

(04/30/10) Slight Format Change for IASI Data

The format of the IASI Level 1C files have slightly changed on 2010 March 15. Please click here to see the PDF containing the IASI L1C format with the updates.

http://www.eumetsat.int/idcplg?IdcService=GET_FILE&dDocName=PDF_V3_IASI_LEVEL
_1PG&RevisionSelectionMethod=LatestReleased

(03/01/10) Jason-2 Cycle 60 Reprocessed IGDR Data

On 01-Mar-2010, reprocessed Jason-2 IGDR, S-IGDR, and IGDR-SSHA files from cycle-060 passes 235-254 were received from CNES and replaced at CLASS. The reprocessing was performed to correct problems with the GIM ionospheric and MOG2D dynamic atmospheric corrections for the 26-Feb-2010 IGDRs. The following files (and accompanying xml-formatted metadata files, not shown) were replaced:

JA2_IP[N,R,S]_2PcP060_235_20100226_050724_20100226_060336
JA2_IP[N,R,S]_2PcP060_236_20100226_060336_20100226_065949
JA2_IP[N,R,S]_2PcP060_237_20100226_065949_20100226_075602
JA2_IP[N,R,S]_2PcP060_238_20100226_075602_20100226_085215
JA2_IP[N,R,S]_2PcP060_239_20100226_085215_20100226_094828
JA2_IP[N,R,S]_2PcP060_240_20100226_094828_20100226_104441
JA2_IP[N,R,S]_2PcP060_241_20100226_104441_20100226_114054
JA2_IP[N,R,S]_2PcP060_242_20100226_114054_20100226_123707
JA2_IP[N,R,S]_2PcP060_243_20100226_123707_20100226_133319
JA2_IP[N,R,S]_2PcP060_244_20100226_133319_20100226_142932
JA2_IP[N,R,S]_2PcP060_245_20100226_142932_20100226_152545
JA2_IP[N,R,S]_2PcP060_246_20100226_152545_20100226_162158
JA2_IP[N,R,S]_2PcP060_247_20100226_162158_20100226_171811
JA2_IP[N,R,S]_2PcP060_248_20100226_171811_20100226_181424
JA2_IP[N,R,S]_2PcP060_249_20100226_181424_20100226_191037
JA2_IP[N,R,S]_2PcP060_250_20100226_191037_20100226_200650
JA2_IP[N,R,S]_2PcP060_251_20100226_200650_20100226_210302
JA2_IP[N,R,S]_2PcP060_252_20100226_210302_20100226_215915
JA2_IP[N,R,S]_2PcP060_253_20100226_215915_20100226_225528
JA2_IP[N,R,S]_2PcP060_254_20100226_225528_20100226_235141

(01/27/10) Jason-2 Cycle 57 Reprocessed IGDR Data

On 2019-01-27, reprocessed Jason-2 IGDR, S-IGDR, and IGDR-SSHA files from cycle-057 passes 120-126 were received from CNES and replaced at CLASS. The reprocessing was performed to correct problems with the GIM ionospheric correction in these level-2 files. The following files (and accompanying xml-formatted metadata files, not shown) were replaced:

JA2_IP[N,R,S]_2PcP057_120_20100122_232707_20100123_002320
JA2_IP[N,R,S]_2PcP057_121_20100123_002320_20100123_011933
JA2_IP[N,R,S]_2PcP057_122_20100123_011933_20100123_021546
JA2_IP[N,R,S]_2PcP057_123_20100123_021546_20100123_031159
JA2_IP[N,R,S]_2PcP057_124_20100123_031159_20100123_040812
JA2_IP[N,R,S]_2PcP057_125_20100123_040812_20100123_050424
JA2_IP[N,R,S]_2PcP057_126_20100123_050424_20100123_060037

(01/21/10) Jason-2 Cycle 56 Reprocessed IGDR Data

On 2010-01-21, reprocessed Jason-2 IGDR, IGDR-SSHA, and S-IGDR files from cycle-056 passes 148-245 were received from CNES and replaced at CLASS. The reprocessing was performed to create IGDRs using the new version 3.0 SPA software, so that the files are consistent with the OGDRs produced by version 3.0 of TM-NRT. The new version of OGDR software was implemented on 2010-01-14, beginning with cycle-056 pass 148. Details of the changes between the previous version of the software and the new version 3.0 software are contained in an announcement sent to the Ocean Surface Topography Science Team, here <link to announcement>. The following files (and accompanying xml-formatted metadata files, not shown) were replaced:

JA2_IP[N,R,S]_2PcP056_148_20100114_034236_20100114_043849
JA2_IP[N,R,S]_2PcP056_149_20100114_043849_20100114_053501
JA2_IP[N,R,S]_2PcP056_150_20100114_053501_20100114_063114
JA2_IP[N,R,S]_2PcP056_151_20100114_063114_20100114_072727
JA2_IP[N,R,S]_2PcP056_152_20100114_072727_20100114_082340
JA2_IP[N,R,S]_2PcP056_153_20100114_082340_20100114_091953
JA2_IP[N,R,S]_2PcP056_154_20100114_091953_20100114_101606
JA2_IP[N,R,S]_2PcP056_155_20100114_101606_20100114_111219
JA2_IP[N,R,S]_2PcP056_156_20100114_111219_20100114_120832
JA2_IP[N,R,S]_2PcP056_157_20100114_120832_20100114_130445
JA2_IP[N,R,S]_2PcP056_158_20100114_130445_20100114_140058
JA2_IP[N,R,S]_2PcP056_159_20100114_140058_20100114_145710
JA2_IP[N,R,S]_2PcP056_160_20100114_145710_20100114_155323
JA2_IP[N,R,S]_2PcP056_161_20100114_155323_20100114_164936
JA2_IP[N,R,S]_2PcP056_162_20100114_164936_20100114_174549
JA2_IP[N,R,S]_2PcP056_163_20100114_174549_20100114_184202
JA2_IP[N,R,S]_2PcP056_164_20100114_184202_20100114_193815
JA2_IP[N,R,S]_2PcP056_165_20100114_193815_20100114_203427
JA2_IP[N,R,S]_2PcP056_166_20100114_203427_20100114_213040
JA2_IP[N,R,S]_2PcP056_167_20100114_213040_20100114_222653
JA2_IP[N,R,S]_2PcP056_168_20100114_222653_20100114_232306
JA2_IP[N,R,S]_2PcP056_169_20100114_232306_20100115_001919
JA2_IP[N,R,S]_2PcP056_170_20100115_001919_20100115_011532
JA2_IP[N,R,S]_2PcP056_171_20100115_011532_20100115_021145
JA2_IP[N,R,S]_2PcP056_172_20100115_021145_20100115_030758
JA2_IP[N,R,S]_2PcP056_173_20100115_030758_20100115_040411
JA2_IP[N,R,S]_2PcP056_174_20100115_040411_20100115_050024
JA2_IP[N,R,S]_2PcP056_175_20100115_050024_20100115_055636
JA2_IP[N,R,S]_2PcP056_176_20100115_055636_20100115_065249
JA2_IP[N,R,S]_2PcP056_177_20100115_065249_20100115_074902
JA2_IP[N,R,S]_2PcP056_178_20100115_074902_20100115_084515
JA2_IP[N,R,S]_2PcP056_179_20100115_084515_20100115_094128
JA2_IP[N,R,S]_2PcP056_180_20100115_094128_20100115_103741
JA2_IP[N,R,S]_2PcP056_181_20100115_103741_20100115_113354
JA2_IP[N,R,S]_2PcP056_182_20100115_113354_20100115_123007
JA2_IP[N,R,S]_2PcP056_183_20100115_123007_20100115_132619
JA2_IP[N,R,S]_2PcP056_184_20100115_132619_20100115_142232
JA2_IP[N,R,S]_2PcP056_185_20100115_142232_20100115_151845
JA2_IP[N,R,S]_2PcP056_186_20100115_151845_20100115_161458
JA2_IP[N,R,S]_2PcP056_187_20100115_161458_20100115_171111
JA2_IP[N,R,S]_2PcP056_188_20100115_171111_20100115_180724
JA2_IP[N,R,S]_2PcP056_189_20100115_180724_20100115_190337
JA2_IP[N,R,S]_2PcP056_190_20100115_190337_20100115_195950
JA2_IP[N,R,S]_2PcP056_191_20100115_195950_20100115_205602
JA2_IP[N,R,S]_2PcP056_192_20100115_205602_20100115_215215
JA2_IP[N,R,S]_2PcP056_193_20100115_215215_20100115_224828
JA2_IP[N,R,S]_2PcP056_194_20100115_224828_20100115_234441
JA2_IP[N,R,S]_2PcP056_195_20100115_234441_20100116_004054
JA2_IP[N,R,S]_2PcP056_196_20100116_004054_20100116_013707
JA2_IP[N,R,S]_2PcP056_197_20100116_013707_20100116_023320
JA2_IP[N,R,S]_2PcP056_198_20100116_023320_20100116_032933
JA2_IP[N,R,S]_2PcP056_199_20100116_032933_20100116_042546
JA2_IP[N,R,S]_2PcP056_200_20100116_042546_20100116_052158
JA2_IP[N,R,S]_2PcP056_201_20100116_052158_20100116_061811
JA2_IP[N,R,S]_2PcP056_202_20100116_061811_20100116_071424
JA2_IP[N,R,S]_2PcP056_203_20100116_071424_20100116_081037
JA2_IP[N,R,S]_2PcP056_204_20100116_081037_20100116_090650
JA2_IP[N,R,S]_2PcP056_205_20100116_090650_20100116_100303
JA2_IP[N,R,S]_2PcP056_206_20100116_100303_20100116_105916
JA2_IP[N,R,S]_2PcP056_207_20100116_105916_20100116_115529
JA2_IP[N,R,S]_2PcP056_208_20100116_115529_20100116_125142
JA2_IP[N,R,S]_2PcP056_209_20100116_125142_20100116_134754
JA2_IP[N,R,S]_2PcP056_210_20100116_134754_20100116_144407
JA2_IP[N,R,S]_2PcP056_211_20100116_144407_20100116_154020
JA2_IP[N,R,S]_2PcP056_212_20100116_154020_20100116_163633
JA2_IP[N,R,S]_2PcP056_213_20100116_163633_20100116_173246
JA2_IP[N,R,S]_2PcP056_214_20100116_173246_20100116_182859
JA2_IP[N,R,S]_2PcP056_215_20100116_182859_20100116_192512
JA2_IP[N,R,S]_2PcP056_216_20100116_192512_20100116_202125
JA2_IP[N,R,S]_2PcP056_217_20100116_202125_20100116_211737
JA2_IP[N,R,S]_2PcP056_218_20100116_211737_20100116_221350
JA2_IP[N,R,S]_2PcP056_219_20100116_221350_20100116_231003
JA2_IP[N,R,S]_2PcP056_220_20100116_231003_20100117_000616
JA2_IP[N,R,S]_2PcP056_221_20100117_000616_20100117_010229
JA2_IP[N,R,S]_2PcP056_222_20100117_010229_20100117_015842
JA2_IP[N,R,S]_2PcP056_223_20100117_015842_20100117_025455
JA2_IP[N,R,S]_2PcP056_224_20100117_025455_20100117_035108
JA2_IP[N,R,S]_2PcP056_225_20100117_035108_20100117_044720
JA2_IP[N,R,S]_2PcP056_226_20100117_044720_20100117_054333
JA2_IP[N,R,S]_2PcP056_227_20100117_054333_20100117_063946
JA2_IP[N,R,S]_2PcP056_228_20100117_063946_20100117_073559
JA2_IP[N,R,S]_2PcP056_229_20100117_073559_20100117_083212
JA2_IP[N,R,S]_2PcP056_230_20100117_083212_20100117_092825
JA2_IP[N,R,S]_2PcP056_231_20100117_092825_20100117_102438
JA2_IP[N,R,S]_2PcP056_232_20100117_102438_20100117_112051
JA2_IP[N,R,S]_2PcP056_233_20100117_112051_20100117_121704
JA2_IP[N,R,S]_2PcP056_234_20100117_121704_20100117_131317
JA2_IP[N,R,S]_2PcP056_235_20100117_131317_20100117_140929
JA2_IP[N,R,S]_2PcP056_236_20100117_140929_20100117_150542
JA2_IP[N,R,S]_2PcP056_237_20100117_150542_20100117_160155
JA2_IP[N,R,S]_2PcP056_238_20100117_160155_20100117_165808
JA2_IP[N,R,S]_2PcP056_239_20100117_165808_20100117_175421
JA2_IP[N,R,S]_2PcP056_240_20100117_175421_20100117_185034
JA2_IP[N,R,S]_2PcP056_241_20100117_185034_20100117_194647
JA2_IP[N,R,S]_2PcP056_242_20100117_194647_20100117_204300
JA2_IP[N,R,S]_2PcP056_243_20100117_204300_20100117_213912
JA2_IP[N,R,S]_2PcP056_244_20100117_213912_20100117_223525
JA2_IP[N,R,S]_2PcP056_245_20100117_223525_20100117_233138
=========================================================

******************
OSTST announcement
******************

Dear OSTST members,

Last week the Jason-2 OGDR near real-time processing software (TM-NRT) was upgraded to version 3.0 at both NOAA and EUMETSAT. This is a major system upgrade from the previous version (2.3), but has minimal impact on users. There are no format changes to the products. TM-NRT-V3 contains a new internal ftp module, provides a common processing package for both Jason-2 and SARAL/Altika, and corrects a few minor anomalies within the OGDR products. The correction of these anomalies is the only difference in data content that end users will observe:

- Several one-byte flags were incorrectly defaulted to 0 vs. 127. They now have a proper _FillValue of 127.

- Four generic processing algorithms didn't properly handle defaults values. These have all been corrected.

- The flag 'alt_state_flag_tracking_mode_20hz' was set to 0, indicating split-gate tracking, when it should have been 1, indicating median tracking mode. The flag is now correctly set to 1 during median tracking.

- The construction of 'net_instr_corr_swh_ku' was incorrect due to a calculation with a wrong bit number. This has been corrected.

- A few netCDF variable attributes (NOT variable names) were misspelled or contained typographical errors that have been corrected:

=============================================================================
variable variable_attribute change from V2.3 to V3.0
=============================================================================
lon comment Greenwich spelling corrected
lon_20hz comment Greenwich spelling corrected
orb_state_flag_rest comment meaning of flag state '8' corrected
model_dry_tropo_corr standard_name troposphere spelling corrected
model_wet_tropo_corr standard_name troposphere spelling corrected
rad_wet_tropo_corr standard_name troposphere spelling corrected
rad_wet_tropo_corr quality_flag "and" added before "interp_flag_tb"
=============================================================================

None of these changes should necessitate changes to your processing code.

Due to unexpected earth terminal testing at the NOAA/Wallops ground station, a single (short) OGDR was produced with TM-NRT-V3.0 prior to the planned transition on the morning of 14-Jan-2010. This single OGDR is JA2_OPN_2PcS056_139_20100113_200656_20100113_202210.

All OGDRs produced by both NOAA and EUMETSAT after the planned transition are now based on TM-NRT-V3.0. This can be confirmed via the 'references' global netCDF attribute: "L1 library=V3.1p1, L2 library=V3.0p1, Processing Pilot=V3-0p1p2p3".

The last OGDR produced with TM-NRT-V2.3 is:

JA2_OPN_2PcS056_146_20100114_015512_20100114_035302

The first (full) OGDR produced with TM-NRT-V3.0 is:

JA2_OPN_2PcS056_148_20100114_035302_20100114_053835

CNES's offline processing software has been updated this week to the same V3.0 core processing (SPA component) as TM-NRT-V3. The minor anomalies listed above will therefore also be corrected in the V3.0 IGDRs and GDRs.

Operationally, the last IGDR produced with SPA-V2.3 was:

JA2_IPN_2PcP056_226_20100117_044720_20100117_054333

and the first IGDR produced with SPA-V3.0 was:

JA2_IPN_2PcP056_227_20100117_054333_20100117_063946

Today CNES has reprocessed the IGDRs for cycle-056 passes 148 to 245 to be consistent with the OGDR products based on TM-NRT-V3. These V3.0 IGDRs will be available via AVISO and CLASS shortly.

Finally, the GDRs for cycle-052 and beyond will be produced with SPA-V3.0. The latest cycle-051 GDRs were produced with SPA-V2.3, and will be released shortly.

If you have any questions regarding the new version 3.0 OGDR/IGDR/GDRs, please contact one of the Jason-2 Measurement Systems Engineers:

Julia Figa: julia.figa@eumetsat.int
Remko Scharroo: remko.scharroo@noaa.gov
Nicolas Picot: nicolas.picot@cnes.fr
Shailen Desai: shailen.d.desai@jpl.nasa.gov

(09/17/09) Product Anomaly, Upgraded Infrared Atmospheric Sounding
Interferometer (IASI)

ESPC Operations
Subject:Product Anomaly,Upgraded Infrared Atmospheric Sounding
Interferometer (IASI)
Date/Time Issued: *SEPTEMBER** 17, 2009 1925 UTC

Topic: Upgraded Infrared Atmospheric Sounding Interferometer (IASI)
Level 2 products from MetOp-2/A Declared Operational

Date/Time Issued: SEPTEMBER 17, 2009 1925 UTC
Satellites Involved: MetOp-2/A
Instruments Involved: All IASI Level 1 and Level 2 Products
Product(s) or Data Impacted: All IASI Products
Date/Time of Initial Impact: September 17, 2009 1800 UTC
Date/Time of Expected End: TBD
User Actions: None

Details/Specifics of Changes: NOAA/NESDIS will be upgrading the Infrared
Atmospheric Sounding Interferometer (IASI) data processing system and
the upgraded products will be operationally available to its users from
the IASI Products Processing System (IPPS), at the Environmental
Satellite Processing Center (ESPC). This system upgrade includes the
higher resolution (1km X 1km) Digital Elevation Model (DEM), Local Angle
Correction, global grids changed to 0.5X2.0, sub-grid image with a dead
pixel mask added to daily 3X3 global grids, new CH4 first guess and CH4
channel list, updated rapid transmittance algorithm (RTA) forward
model, adjustments to CO2 retrieval, removal of AMSU-A channel 7 due to
high noise, rejection threshold changed to eliminate outliers (cases not
meeting cloud clearing assumptions, and a new product SO2 flag to alert
users for the presence of volcanic SO2 plumes. System scripts are also
changed to improve reliability and performance. The upgraded products
will be available to both real-time users and climate users through
NESDIS Environment Satellite Processing Center (ESPC) Data Distribution
Server (DDS) and Comprehensive Large Array-data Stewardship System
(CLASS) starting on September 17, 2009.

Contact Information : Awdhesh Sharma, 301-763-8142 ext 185,
Awdhesh.Sharma@nooa.gov <mailto:Awdhesh.Sharma@nooa.gov>

Web Site(s) for applicable information:
http://www.orbit.nesdis.noaa.gov/smcd/spb/iosspdt/iosspdt.php

(08/07/09) Jason-2 Cycle 40 Reprocessed OGDR Data

On 2009-08-07, reprocessed Jason-2 OGDR/OGDR-SSHA/OGDR-BUFR files from cycle 040 (passes 070, 071, 076, 078, and 079) were received from ESPC and replaced at CLASS. The reprocessing was performed due to an error with the UTC-TAI (leap second) ancillary file. The following files (and accompanying xml-formatted metadata files, not shown) were replaced:

JA2_OPB_2PcS040_070_20090805_110819_20090805_124204
JA2_OPB_2PcS040_071_20090805_124203_20090805_164311
JA2_OPB_2PcS040_076_20090805_164311_20090805_184501
JA2_OPB_2PcS040_078_20090805_184501_20090805_202326
JA2_OPB_2PcS040_079_20090805_202325_20090805_221855
JA2_OPN_2PcS040_070_20090805_110819_20090805_124204
JA2_OPN_2PcS040_071_20090805_124203_20090805_164311
JA2_OPN_2PcS040_076_20090805_164311_20090805_184501
JA2_OPN_2PcS040_078_20090805_184501_20090805_202326
JA2_OPN_2PcS040_079_20090805_202325_20090805_221855
JA2_OPR_2PcS040_070_20090805_110819_20090805_124204
JA2_OPR_2PcS040_071_20090805_124203_20090805_164311
JA2_OPR_2PcS040_076_20090805_164311_20090805_184501
JA2_OPR_2PcS040_078_20090805_184501_20090805_202326
JA2_OPR_2PcS040_079_20090805_202325_20090805_221855

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(08/05/09) Public Release of the Jason-2 Version 'T' Geophysical Data Records

The Jason-2/OSTM Geophysical Data Records (GDRs), version 'T', are now available to the public. The version 'T' calibration/validation GDRs have been extensively validated by the Ocean Surface Topography Science Team (OSTST), who found that these GDRs are demonstrating excellent data quality, and consistency with the Jason-1 version 'c' GDRs. As a result, at their June 2009 meeting in Seattle, the OSTST recommended the release of the Jason-2/OSTM Version 'T' GDRs as is.

The public are invited to proceed with analyses based on this version 'T' release of the Jason-2 GDRs. All these products are available since launch, 20-Jun-2008, from the following two sources:

1) CNES/AVISO’s site :    http://www.aviso.oceanobs.com/index.php?id=1458 
2) NOAA's CLASS site :    http://www.class.noaa.gov

These products are computed at CNES in NetCDF file format. 3 types of files are available:

- a GDR-T native NetCDF formatted datasets ("standard product");
- a reduced 1Hz subset of the full dataset (SSHA-GDR-T);
- an expert sensor product containing the full radar-echo waveforms (SGDR-T).

For details and limitations, please refer to :
http://www.aviso.oceanobs.com/fileadmin/documents/data/products/Jason-2_GDR_T_disclaimer.pdf

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(06/08/09) Jason-2 level-2 data files corrupted

Due to a software bug in the data processing system at ESPC, 15 GDR/S-GDR files and 102 IGDR/S-IGDR/IGDR-SSHA files were corrupted during transmission to CLASS. The bug was fixed on 12-May-2009, and no further file corruption has been observed. The corrupt GDR/S-GDR files have all been replaced by 17:12 UTC on 15-May-2009. The corrupt IGDR/S-IGDR/IGDR-SSHA files have all been replaced by 14:35 UTC on 28-May-2009. The complete analysis of the level-2 data affected by corruption, including the names, sizes, and date of availability of the replacement files, is described in this separate report "An Analysis of Corrupt Level-2 Jason-2/OSTM Data at NOAA/CLASS". We apologize for this inconvenience, and recommend that you re-download any of the files documented in this report.

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(06/04/09) Jason-2 Cycle 33 Reprocessed IGDR Data

On 2009-06-04, reprocessed Jason-2 IGDR, S-IGDR, and IGDR-SSHA files from cycle-033 passes 126-150 were received from CNES and replaced at CLASS. The reprocessing was performed to correct problems with the GIM ionospheric correction (passes 126-145) and to replace the original MOE orbit with an updated orbit (passes 126-150). The following files (and accompanying xml-formatted metadata files, not shown) were replaced:

JA2_IPN_2PcP033_126_20090530_053946_20090530_063559
JA2_IPN_2PcP033_127_20090530_063559_20090530_073211
JA2_IPN_2PcP033_128_20090530_073211_20090530_082824
JA2_IPN_2PcP033_129_20090530_082824_20090530_092437
JA2_IPN_2PcP033_130_20090530_092437_20090530_102050
JA2_IPN_2PcP033_131_20090530_102050_20090530_111703
JA2_IPN_2PcP033_132_20090530_111703_20090530_121316
JA2_IPN_2PcP033_133_20090530_121316_20090530_130929
JA2_IPN_2PcP033_134_20090530_130929_20090530_140542
JA2_IPN_2PcP033_135_20090530_140542_20090530_150154
JA2_IPN_2PcP033_136_20090530_150154_20090530_155807
JA2_IPN_2PcP033_137_20090530_155807_20090530_165420
JA2_IPN_2PcP033_138_20090530_165420_20090530_175033
JA2_IPN_2PcP033_139_20090530_175033_20090530_184646
JA2_IPN_2PcP033_140_20090530_184646_20090530_194259
JA2_IPN_2PcP033_141_20090530_194259_20090530_203912
JA2_IPN_2PcP033_142_20090530_203912_20090530_213525
JA2_IPN_2PcP033_143_20090530_213525_20090530_223138
JA2_IPN_2PcP033_144_20090530_223138_20090530_232750
JA2_IPN_2PcP033_145_20090530_232750_20090531_002403
JA2_IPN_2PcP033_146_20090531_002403_20090531_012016
JA2_IPN_2PcP033_147_20090531_012016_20090531_021629
JA2_IPN_2PcP033_148_20090531_021629_20090531_031242
JA2_IPN_2PcP033_149_20090531_031242_20090531_040855
JA2_IPN_2PcP033_150_20090531_040855_20090531_050508

JA2_IPR_2PcP033_126_20090530_053946_20090530_063559
JA2_IPR_2PcP033_127_20090530_063559_20090530_073211
JA2_IPR_2PcP033_128_20090530_073211_20090530_082824
JA2_IPR_2PcP033_129_20090530_082824_20090530_092437
JA2_IPR_2PcP033_130_20090530_092437_20090530_102050
JA2_IPR_2PcP033_131_20090530_102050_20090530_111703
JA2_IPR_2PcP033_132_20090530_111703_20090530_121316
JA2_IPR_2PcP033_133_20090530_121316_20090530_130929
JA2_IPR_2PcP033_134_20090530_130929_20090530_140542
JA2_IPR_2PcP033_135_20090530_140542_20090530_150154
JA2_IPR_2PcP033_136_20090530_150154_20090530_155807
JA2_IPR_2PcP033_137_20090530_155807_20090530_165420
JA2_IPR_2PcP033_138_20090530_165420_20090530_175033
JA2_IPR_2PcP033_139_20090530_175033_20090530_184646
JA2_IPR_2PcP033_140_20090530_184646_20090530_194259
JA2_IPR_2PcP033_141_20090530_194259_20090530_203912
JA2_IPR_2PcP033_142_20090530_203912_20090530_213525
JA2_IPR_2PcP033_143_20090530_213525_20090530_223138
JA2_IPR_2PcP033_144_20090530_223138_20090530_232750
JA2_IPR_2PcP033_145_20090530_232750_20090531_002403
JA2_IPR_2PcP033_146_20090531_002403_20090531_012016
JA2_IPR_2PcP033_147_20090531_012016_20090531_021629
JA2_IPR_2PcP033_148_20090531_021629_20090531_031242
JA2_IPR_2PcP033_149_20090531_031242_20090531_040855
JA2_IPR_2PcP033_150_20090531_040855_20090531_050508

JA2_IPS_2PcP033_126_20090530_053946_20090530_063559
JA2_IPS_2PcP033_127_20090530_063559_20090530_073211
JA2_IPS_2PcP033_128_20090530_073211_20090530_082824
JA2_IPS_2PcP033_129_20090530_082824_20090530_092437
JA2_IPS_2PcP033_130_20090530_092437_20090530_102050
JA2_IPS_2PcP033_131_20090530_102050_20090530_111703
JA2_IPS_2PcP033_132_20090530_111703_20090530_121316
JA2_IPS_2PcP033_133_20090530_121316_20090530_130929
JA2_IPS_2PcP033_134_20090530_130929_20090530_140542
JA2_IPS_2PcP033_135_20090530_140542_20090530_150154
JA2_IPS_2PcP033_136_20090530_150154_20090530_155807
JA2_IPS_2PcP033_137_20090530_155807_20090530_165420
JA2_IPS_2PcP033_138_20090530_165420_20090530_175033
JA2_IPS_2PcP033_139_20090530_175033_20090530_184646
JA2_IPS_2PcP033_140_20090530_184646_20090530_194259
JA2_IPS_2PcP033_141_20090530_194259_20090530_203912
JA2_IPS_2PcP033_142_20090530_203912_20090530_213525
JA2_IPS_2PcP033_143_20090530_213525_20090530_223138
JA2_IPS_2PcP033_144_20090530_223138_20090530_232750
JA2_IPS_2PcP033_145_20090530_232750_20090531_002403
JA2_IPS_2PcP033_146_20090531_002403_20090531_012016
JA2_IPS_2PcP033_147_20090531_012016_20090531_021629
JA2_IPS_2PcP033_148_20090531_021629_20090531_031242
JA2_IPS_2PcP033_149_20090531_031242_20090531_040855
JA2_IPS_2PcP033_150_20090531_040855_20090531_050508

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(06/02/09) NOAA-19 Becomes the Primary Afternoon Satellite

On June 2 2009 at 0000 UTC, NOAA-19 became the primary afternoon satellite to support NOAA's weather satellite mission. All Local Area Coverage (1 km data) scheduled passes will switch from NOAA-18 to NOAA-19. Please click here for the full notice.

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(05/04/09) Jason-2 Cycle 29 Pass 115 IGDR Reprocessed Data

On  2009-05-04, the following 3 Jason-2 IGDR files and corresponding xml-formatted metadata files were replaced. The original IGDRs had data gaps:

JA2_IPS_2PcP029_115_20090420_032718_20090420_042331
JA2_IPS_2PcP029_115_20090420_032718_20090420_042331.xml
JA2_IPN_2PcP029_115_20090420_032718_20090420_042331
JA2_IPN_2PcP029_115_20090420_032718_20090420_042331.xml
JA2_IPR_2PcP029_115_20090420_032718_20090420_042331
JA2_IPR_2PcP029_115_20090420_032718_20090420_042331.xml 

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(4/16/09) NOAA-N Prime Successful Launch 6 February 2009

The launch of NOAA-N Prime, the last satellite in the series of TIROS ATN, was successfully launched 6 February 2009 at 10:22 UTC from Vandenberg AFB, California. See the launch and mission information. NOAA-N Prime will now be renamed NOAA-19. Only authorized users will have access to the pre-operational data in CLASS. 60 days after the launch date, the satellite and data are expected to become operational and the data will be accessible to all users.

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(03/04/09) DMSP F-15 data from the 22 Vertical GHz Channel has deteriorated

Details of Outage

NRL has been able to assess the magnitude of the RADCAL interference
on F15 SSMI. The F-15 orbit plane is precessing westward which has resulted
in the coincidence with F13. Their study showed that the large increase in
interference from 2/4 to 2/11. They confirmed that there is significant
orbital variations of the RADCAL interference with maximum approaching 5K.
Also, the orbital variability creates a very difficult problem to address
since it requires a correction scheme that depends on orbital position of
the S/C. Therefore, the F-15 SSMI 22V channel and associated EDRs are
unusable until a new correction algorithm is developed and/or the sensor
stabilizes.

At this moment, FNMOC is still leaving the data ingest on inside of
the FNMOC since their NWP data assimilation model has a good QC program at
the front end rejecting the bad obs. We would like to know if our SSM/I
operational users still need the data feed. If so, please send an email to
Vincent.Tabor@noaa.gov stating your requirement.  Also, please be
advised of the increasing level of interference and the degraded quality of the 22v
SDRs and associated EDRs.

FNMOC will continue to monitor the RADCAL interference and report
major changes. This information will be passes on to our users.  Please let
us know, if you have any questions.

Data Affected by the Outage:
SSM/I data  F-15 EDRs, TDRs and SDRs and products produced from this data

Date and Time of the Outage: 2/26/2009, 1730 UTC
Length of the Outage: Until further notice
Contact Point for Questions: ESPC Operations  OCL  (Operations Crew Leader),  301-817-3880

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(03/3/09) GOES-12 satellite Thruster leak - corrected

Update SOCC reports the Goes-12  problem has been resolved, the schedule  will  resume  at  0845Z  for Goes-12
*
Details of the Outage:

*GOES-12 satellite is experiencing a Thruster  leak . However, SOCC engineers are working on correcting the Thruster situation.

*Data Affected by the Outage:

*0739Z SHEMI, 0745Z NHEMI, 0801Z CONUS,  0809Z SHEMI, 0815Z  FDSK & SOUNDER 0746Z & 0820Z

*Date and Time of the Outage:

*3/03/2009 0730 UTC until 03/03/2009 0845 UTC

*Length of the Outage:

 *1 Hr 15 Min.

*Contact Point for Questions:

*ESPC Operations  OCL  (Operations Crew Leader),  301-817-3880

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(02/25/09) GOES-12 Thruster leak - corrected


*GOES-12 satellite experienced a Thruster 5b leak this morning which caused
the navigation to be affected and several image/products were
not available for transmission. The navigation situation has been corrected.
However, SOCC engineers are working on the correcting the Thruster situation.

*Data Affected by the Outage:

*The following images were not available for transmission:

1046Z SOUNDER, 1103Z SOUNDER, 1101Z CONUS,
1109 SHEMI, 1115Z NHEMI AND 1120Z
GULF OF MEXICO WINDS SOUNDING.

*Date and Time of the Outage:

*2/25/2009 0615 UTC

*Length of the Outage:

*2/25/2009 0615 UTC until 0915, 2009* **
*
*Contact Point for Questions:

*ESPC Operations  OCL  (Operations Crew Leader),  301-817-3880

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(02/18/09) Jason-2 IGDR Replaced Data

On 18 February 2009 the Advanced Microwave Radiometer (AMR) and Poseidon-3 Altimeter characterization files used in the processing of Jason-2 products were updated. These files are used to characterize both instruments and the evolution of their accuracy over time. This update is part of the ongoing Jason-2 calibration/validation activities, focusing on the validation of the highest accuracy Jason-2 off-line products (GDR).

For the Jason-2 OGDRs the first file processed with the new characterization files was during pass #082 of cycle 23:

JA2_OPN_2PcS023_082_20090218_084414_20090218_101650
JA2_OPR_2PcS023_082_20090218_084414_20090218_101650
JA2_OPB_2PcS023_082_20090218_084414_20090218_101650

For the Jason-2 IGDRs, CLASS originally received pass #001 of cycle 23 based on the older characterization files, but has subsequently received the following files based upon the new 18-Feb-2009 characterization files:

JA2_IPN_2PcP023_001_20090215_044742_20090215_054355
JA2_IPR_2PcP023_001_20090215_044742_20090215_054355
JA2_IPS_2PcP023_001_20090215_044742_20090215_054355

The version of these files for pass #001 of cycle 23 are now based on the newest characterization files.

The expected changes to the sea surface height and wind speed values in going from the old to the new characterization files are as follows:

-7.2 mm on sea surface height
+0.2 m/s on wind speed

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(01/28/09) GOES-12 Thruster leak

*Update:*

The GOES-12 navigation has been corrected as of the 20:15Z image.

***Details of the Outage:*

At 22:40Z on Jan 27, 2009, GOES-12 had a re-occurrence of a thruster
leak which caused a Yaw momentum build up.  This caused the navigation
to be off by approximately 20 scan lines.  As of 17:15Z the navigation
is still off and engineers are working on the problem.  It should be
fixed within a couple of hours.

*Data Affected by the Outage:

*GOES-12 * *

*Date and Time of the Outage:

*01/27/2009 2240 UTC, 6:40 PM, EST

*Length of the Outage:

*Until further notice* *

*Contact Point for Questions:

ESPC Operations  OCL  (Operations Crew Leader),  301-817-3880 *

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(01/20/09) GOES-12 resumes operations after GOES-13 filled in during the outage

1/6/09 Posted on the CLASS Home page. Removed from the home page 1/20/09.
GOES-12 is now operational: CLASS is receiving GOES-12 Imager and Sounder data beginning on 1500 UTC 6 January 2009. CLASS users needing GOES-east data for the period between 2200 UTC 14 December 2008 to 1500 UTC 6 January 2009 should search under GOES-13.

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(01/20/09) DMSP Data in NetCDF format - update

The data provide for DMSP data in NetCDF format, NCDC, has stopped providing the data until they have a chance to clean up the data sets.

4/2008  Posted message on the Home page.  Removed from the message from the home page 1/20/2009.
New DMSP Data: NOAA's National Climatic Data Center is now transferring DMSP SSMI-SSMIS TDR and SDR data in NetCDF format to CLASS along with embedded quality flags to identify climatology anomalies and errors in geolocation, temperature and time values. Also, the period of record is now extended back to August 1993. The date range for the currently available DMSP SSMI TDR data is from 19 August, 1994 through April 1999, and from December 2002 through June 2008. CLASS continues to offer the native format SSMI TDR and SDR, which started in February 1997.

Current message on the home page 1/21/09:

DMSP TDR and SDR NetCDF data: is currently available from 19 August, 1994 through 30 April,1999 and from 21 June, 2001 through 22 July, 2008. The native format, which starts in February 1997, is still offered.

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(01/19/09) POES data outage from data provider 1655 - 1835 UTC, 1 hour & 40 minutes

*Details of the Outage:

Update: 01/19/2009, 1832 UTC, 0132 AM EST
*ESPC is now receiving POLAR data.
System administrator reports  disk was full on the  ingestors.*

*The  POES AFEP system is currently having major problems which is effecting  polar ingest and distributions.   System administration technicians are trying to resolve the problem.*
* *Data Affected by the Outage:

*All Polar data.

*Date and Time of the Outage:

*01/19/2009, 1655 UTC, 11:55 AM EST

*Length of the Outage:

*01/19/2009, 1655 UTC, 11:55 AM EST to 01/19/2009, 1835 UTC, 0135 PM EST.
1 hour and 40 minutes.

*Contact Point for Questions:
ESPC OPERATIONS  OCL (Operations Crew Leader),  301-817-3880 *

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(01/16/09) Jason-2 IGDR Replacement Data

On  2009-01-16, the following 6 Jason-2 IGDR files and corresponding xml-formatted metadata files were replaced. The original versions of the IGDR files did not properly account for the advent of the 2008-12-31 leap second:

JA2_IPN_2PcP018_111_20081231_215840_20081231_225453
JA2_IPN_2PcP018_111_20081231_215840_20081231_225453.xml

JA2_IPN_2PcP018_113_20081231_235105_20090101_004717
JA2_IPN_2PcP018_113_20081231_235105_20090101_004717.xml

JA2_IPR_2PcP018_111_20081231_215840_20081231_225453
JA2_IPR_2PcP018_111_20081231_215840_20081231_225453.xml

JA2_IPR_2PcP018_113_20081231_235105_20090101_004717
JA2_IPR_2PcP018_113_20081231_235105_20090101_004717.xml

JA2_IPS_2PcP018_111_20081231_215840_20081231_225453
JA2_IPS_2PcP018_111_20081231_215840_20081231_225453.xml

JA2_IPS_2PcP018_113_20081231_235105_20090101_004717
JA2_IPS_2PcP018_113_20081231_235105_20090101_004717.xml

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(01/15/09) Jason-2/OSTM Data Available

Jason-2/OSTM Data Available: Near real-time data and supporting files from the Jason-2/OSTM altimetry mission were made available to all users beginning 15 December 2008. The Operational Geophysical Data Records, which comprise the near real-time portion of the J2-XGDR family, were unrestricted 15 December.The Interim Geophysical Data Records are unrestricted 15 January 2009. All members of the Ancillary data family (J2-ANC), Orbital Information family (J2-ORBINFO), and Quality Assurance reports (J2-QA) were unrestricted 15 December. Portions of the Auxiliary data family (J2-AUX) and all Jason-2 telemetry data (J2-TEL) will remain restricted. Altimetry data are used for monitoring global sea level rise, ocean currents, tropical cyclone intensification, ocean surface wind speed and wave height.(posted on home page 01/2009)

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(01/12/09) Jason-2 OGDR Files with Missing AMR Data

Entry:
The following Jason-2 operational geophysical data records (OGDRs) are missing AMR data:

JA2_OPN_2PcS019_024_20090107_103349_20090107_122806 (AMR data missing after 11:00:30 UTC)
JA2_OPN_2PcS019_026_20090107_122807_20090107_160538
JA2_OPN_2PcS019_030_20090107_160539_20090107_180036
JA2_OPN_2PcS019_032_20090107_180050_20090107_193120
JA2_OPN_2PcS019_033_20090107_193120_20090107_212458
JA2_OPN_2PcS019_035_20090107_212458_20090107_232305
JA2_OPN_2PcS019_037_20090107_232305_20090108_030725
JA2_OPN_2PcS019_041_20090108_030725_20090108_051608 (AMR data missing before 2009-01-08 03:23:35 UTC)

and

JA2_OPN_2PcS019_118_20090111_023309_20090111_042750 (AMR data missing after  2009-01-11 03:56:38 UTC)
JA2_OPN_2PcS019_120_20090111_042751_20090111_062345
JA2_OPN_2PcS019_122_20090111_062345_20090111_081159
JA2_OPN_2PcS019_124_20090111_081200_20090111_100647
JA2_OPN_2PcS019_126_20090111_100648_20090111_120509
JA2_OPN_2PcS019_128_20090111_120509_20090111_134231
JA2_OPN_2PcS019_129_20090111_134246_20090111_153854
JA2_OPN_2PcS019_132_20090111_153854_20090111_190453
JA2_OPN_2PcS019_135_20090111_190453_20090111_205928
JA2_OPN_2PcS019_137_20090111_205928_20090111_225840
JA2_OPN_2PcS019_139_20090111_225840_20090112_005640
JA2_OPN_2PcS019_141_20090112_005640_20090112_025400
JA2_OPN_2PcS019_144_20090112_025400_20090112_044949
JA2_OPN_2PcS019_146_20090112_044948_20090112_064812
JA2_OPN_2PcS019_148_20090112_064811_20090112_083244
JA2_OPN_2PcS019_150_20090112_083243_20090112_102903
JA2_OPN_2PcS019_152_20090112_102903_20090112_122721
JA2_OPN_2PcS019_154_20090112_122721_20090112_140500
JA2_OPN_2PcS019_155_20090112_140501_20090112_160121
JA2_OPN_2PcS019_158_20090112_160129_20090112_173618
JA2_OPN_2PcS019_159_20090112_173618_20090112_193110 (AMR data missing before 2009-01-12 19:26:01 UTC)

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(01/05/09) Jason-2 OGDR Replacement Data

On  2009-01-05, the following 3 Jason-2 OGDR files and corresponding xml-formatted metadata files were replaced. The original versions of the OGDR files had no AMR radiometer values. The replacement files include proper AMR values.

JA2_OPN_2PcS018_141_20090102_025840_20090102_045612.xml
JA2_OPN_2PcS018_141_20090102_025840_20090102_045612
JA2_OPB_2PcS018_141_20090102_025840_20090102_045612.xml
JA2_OPB_2PcS018_141_20090102_025840_20090102_045612
JA2_OPR_2PcS018_141_20090102_025840_20090102_045612.xml
JA2_OPR_2PcS018_141_20090102_025840_20090102_045612

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