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You are here: GES DISC Home AIRS Documentation Data Version 4 Documentation



User Guide
AIRS/AMSU/HSB Version 4.0 Data Release User Guide Main User Guide, refers to supporting docs.
Filename: V4.0_Data_Release_UG.pdf
AIRS/AMSU/HSB Version 4.0 Data Disclaimer Important Disclaimer.
Filename: V4.0_Data_Disclaimer.pdf
Data Files Description Complete description of contents of released products.
Filename: V4.0_Release_ProcFileDesc.pdf
Level 2 Product Levels and Layers Explanation of AIRS Levels and Layers.
Filename: AIRS_L2_levels_and_layers.pdf
Level 3 QuickStart Getting started with AIRS Level 3 Grid products.
Filename: V4.0_L3_QuickStart.pdf


Quality Assurance (QA) Documentation
V3.0_RetQAFlag.pdf Description of Qality Assurance Flags. All Level2 AIRS/AMSU-A/HSB products include a full swath data field named RetQAFlag.
Select_AIRS_QA_Fields.pdf A brief user guide for the selected L1B AIRS Radiance Product QA swath data fields.
Data Release RetQAFlag V4.0_Primary Flag for Data Selection.
Filename: V4.0_RetQAFlag.pdf
Guide to Selected AIRS QA Fields AIRS Radiance QA Fields controlled by Calibration.
Filename: Selected_AIRS_QA_Fields.pdf
Level-1B QA Quick Start Hierarchy of L1B Quality Assurance Parameters.
Filename: V4.0_L1B_QA_Quick_Start.pdf
Level 2 QA QuickStart Hierarchy of L2 Quality Flags for More Sophisticated Data Selection.
Filename: V4.0_L2_QualFlag_QuickStart.pdf


Data Product Readers
FORTRAN/ C reader and Guide Document FORTRAN and C programs to read L1B and L2 product files. Reqires channel property files. IDL procedure to read L1B and L2 product files IDL procedure to read L3 product files
read_L12_swath_file.m MATLAB module to read L1B and L2 product files
read_L3_grid_file.m MATLAB module to read L3 product files


Calibration and Validation
Validation of Core Products Validation of AIRS/AMSU/HSB core products for data release version 4.0.
Filename: V4.0_Validation_Report.pdf
Status of Calibartion/Validation A summary of the current status of calibration and validation of Algorithm Version 4 products. 
Filename: V4_CalVal_Status_Summary.pdf
Microwave L1B Assessment Assessment of AMSU/HSB L1B Radiances.
Filename: MW_L1B_Assessment.pdf
Vis/NIR Initial Checkout Report on initial Vis/NIR on-orbit checkout (6/12/2002).
Filename: VisInitialCheckout.pdf
First Vis/NIR Vicarious Gain Calibration Report on vicarious calibration for Vis/NIR (9/27/2002).
Filename: VisGainCalibration.pdf
L2 IR Channel Properties 
version 6.8.1 effective 2002.08.30
channel properties file, 2002-AUG-30 to 2002-SEP-17 .
Filename: L2.chan_prop.2002.08.30.v6.8.1.txt
L2 IR Channel Properties
version 6.8.1 effective 2002.09.17
channel properties file, 2002-SEP-17 to 2002-OCT-22.
Filename: L2.chan_prop.2002.09.17.v6.8.1.txt
L2 IR Channel Properties
version 6.8.1 effective 2002.10.22
channel properties file, 2002-OCT-22 to 2003-JAN-10.
Filename: L2.chan_prop.2002.10.22.v6.8.1.txt
L2 IR Channel Properties
version 6.8.1 effective 2003.01.10
channel properties file2003-JAN-10 to 2003-NOV-19.
Filename: L2.chan_prop.2003.01.10.v6.8.1.txt
L2 IR Channel Properties
version 6.8.1 effective 2003.11.19
channel properties file2003-NOV-19 to present.
Filename: L2.chan_prop.2003.11.19.v6.8.1.txt


Other Supporting Documentation
V3.0_Data_Disclaimer.pdf User should read this before reporting problems with data or data availability.
L1B_req_v2.2.pdf This document contains the required inputs and outputs of the AIRS IR and VIS/NIR Level 1B processing software, algorithms for converting AIRS IR digital values to calibrated radiances, and QA algorithms and indicators.
l1bqa_changes.pdf Experience with on-orbit AIRS data prompted the AIRS Calibration Team to alter some AIRS L1B algorithms (e.g. AutomaticQAFlag, DC Restore, pop detection, Moon-in-view, offset, noise estimation and gain). A brief AIRS Design File Memo describing these changes are available.
Clear_Flags.pdf Please note that the clear FOV detection algorithms are currently under development. There are several different clear detection algorithms being refined. They employ different algorithms depending upon their spatial resolution and spectral regime. Definitions of many of the clear flags and the thresholds that control them may be found in this document.
Data_Disclaimer.pdf It provides information which affects the availability of data for ordering (i.e., may be unavailable due to instrument outage or spacecraft maneuvering).
AIRS Level-1B Visible, Infrared and Telemetry Algorithm and QA Processing Requirements AIRS/VIS/NIR L1B Processing input/output description.
Filename: L1B_req_v2.3.pdf
Changes to the AIRS Level-1B Algorithms and QA Parameters Modifications to L1B_req_v2.2 (2/4/2003).
Filename: l1bqa_changes.pdf
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Last updated: Apr 06, 2016 09:39 AM ET