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Documentation

Documentation Package for Version 5.0 Data Release

Page Contents:

* Denote key documents, must read in order to properly understand and use AIRS data products.

User Guide
Document Filename
Description
V5_Data_Release_UG.pdf * The master overview document.
V5_Changes_from_V4.pdf * Summary of changes.
V5_Modification_for_AMSU_Ch_4_NeDT.pdf * Summary of modification to account for increased NeDT in AMSU channel .
V5_Released_ProcFileDesc.pdf The big book of released AIRS Data Products.
V5_ProcFileDesc.pdf The big book of all AIRS Data Products, including non‑public products.
AIRS V5 Tropospheric CO2 Products * The new AIRS/AMSU Level 2 and 3 Carbon Dioxide (CO2) products.
AIRS mid_trop_CO2_330_370_390_wgt_func.txt *

AIRS CO2 weighting functions for US Standard and TIGR atmospheres assuming constant CO2 volume
mixing ratio profiles of 330, 370 and 390 ppm.
V5_L1B_QA_Quick_Start.pdf Provides a quick start identification of the most basic QA parameters that a user should access before using any data for analysis
V5_L2_Standard_Product_QuickStart.pdf * Discussion of key L2 products, their QA , and caveats and suggestions for the users.
V5_L2_Cloud_Cleared_Radiances Discussion of Error Estimates and Suggested Quality Control for AIRS Level-2 Clear Column Radiances
V5_L2_Levels_Layers_Trapezoids.pdf * Discussion of the concepts of levels, layers and trapezoids upon which AIRS products are reported.
V5_L2_Standard_Pressure_Levels.pdf Table of Level 2 standard pressure levels.  Many users have difficulty accessing attributes, so here is a table.
V5_L2_Support_Pressure_Levels.pdf Table of Level 2 support pressure levels.  Many users have difficulty accessing attributes, so here is a table.
V5_Retrieval_Flow.pdf Comparison of V4, V5 and V5 AIRS-Only retrieval steps
V5_Retrieval_Channel_Sets.pdf Identifies by list and graphically the AIRS channels used in the retrieval code.
V5_Cal_Subset_QuickStart.pdf Discussion of the new calibration subset radiance product.
V5_L3_QuickStart.pdf Discussion of the L3 products.
V5_L3_Quantization_QuickStart.pdf Distributional summaries derived from the Level 2 standard swath products. Provides a more comprehensive set of statistical summaries than simple means and standard deviations.
V5_L3_Standard_Pressure_Levels.pdf Table of Level 3 standard pressure levels.  Many users have difficulty accessing attributes, so here is a table.

 

Quality Assurance (QA) Documentation
Document Filename
Description
V5_L1B_QA_Quick_Start.pdf Summary of QA user may wish to apply in choosing AIRS radiance channels.
Selected_AIRS_QA_Fields.pdf Brief discussion of some L1B QA fields, unchanged since V4 delivery.
V5_L2_Quality_Control_and_Error_Estimation.pdf * Discussion of the V5 quality control and error estimation.

 

Data Product Readers
Document Filename
Description
IDL swath and grid data readers Batched readme files in tar fromat for IDL swath and grid data.
MATLAB swath and grid data readers Batched readme files in tar format for MATLAB swath and grid data.
FORTRAN and C data readers Batched files in tar format, with sample Input/Output

 

Channel Properties, Calibration and Validation
Document Filename
Description
Channel Properties files Scientists choosing channels for radiance need these (batched files in tar format).
Calibration Properties

Calibration properties for AIRS channels, which are associated with channel properties files (batched filesin tar format).
V5_CalVal_Status_Summary.pdf * Summary of validation status of products.

 

Other Supporting Documentation
Document Filename
Description
V5_Data_Disclaimer.pdf * Significant differences from V4 to V5, caveats, noHSB vs HSB, data validation states, instrument liens, tables of data outages.
V5_Test_Report.pdf A report of extensive testing of the V5 product against ECMWF and comparison with V4.  Not a validation.

 

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  • Last updated: Jun 22, 2011 08:48 AM ET