AIRS/Aqua L3 Monthly Standard Physical Retrieval (AIRS-only) 1 degree x 1 degree V006 (AIRS3STM) at GES DISC
The Atmospheric Infrared Sounder (AIRS) is a grating spectrometer (R = 1200) aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In combination with the Advanced Microwave Sounding Unit (AMSU) and the Humidity Sounder for Brazil (HSB), AIRS constitutes an innovative atmospheric sounding group of visible, infrared, and microwave sensors. The AIRS Only Level 3 Monthly Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers a calendar month. The mean values are simply the arithmetic means of the daily products, weighted by the number of input counts for each day in that grid box. The geophysical parameters have been averaged and binned into 1 x 1 deg grid cells, from -180.0 to +180.0 deg longitude and from -90.0 to +90.0 deg latitude. For each grid map of 4-byte floating-point mean values there is a corresponding 4-byte floating-point map of standard deviation and a 2-byte integer grid map of counts. The counts map provides the user with the number of points per bin that were included in the mean and can be used to generate custom multi-day maps from the daily gridded products. The thermodynamic parameters are: Skin Temperature (land and sea surface), Air Temperature at the surface, Profiles of Air Temperature and Water Vapor, Tropopause Characteristics, Column Precipitable Water, Cloud Amount/Frequency, Cloud Height, Cloud Top Pressure, Cloud Top Temperature, Reflectance, Emissivity, Surface Pressure, Cloud Vertical Distribution. The trace gases parameters are: Total Amounts and Vertical Profiles of Carbon Monoxide, Methane, and Ozone. The actual names of the variables in the data files should be inferred from the Processing File Description document.
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| Spatial Extent: | Bounding Rectangle: N: 90 S: -90 E: 180 W: -180 |
Data Format(s): | Distribution: HDF-EOS |
| Temporal Extent: | Platform(s): | Aqua | |
| Data Center(s): | NASA/GSFC/SED/ESD/GCDC/GESDISC | Instrument(s): | AIRS |
| Version: | 006 | ||
- Title: AIRS/Aqua L3 Monthly Standard Physical Retrieval (AIRS-only) 1 degree x 1 degree V006
- Version: 006
- Creator: AIRS Science Team/Joao Teixeira
- Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
- Release Date: 2013-03-12T00:00:00.000Z
- Linkage: https://disc.gsfc.nasa.gov/datacollection/AIRS3STM_006.html
10.5067/Aqua/AIRS/DATA321
- READ-ME: https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/AIRS/3.3_ScienceDataProductDocumentation/3.3.4_ProductGenerationAlgorithms/README.AIRS_V6.pdf, README Document
- GENERAL DOCUMENTATION: https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/AIRS/3.3_ScienceDataProductDocumentation/3.3.4_ProductGenerationAlgorithms/V6_Released_Processing_Files_Description.pdf, AIRS Version 6 Processing Files Description Document.
Collection Information
Data Identification
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Processing Level
3
- Quality The quality of data products, described in the associated references, provide information about numerous validation studies conducted and papers written documenting the excellence of the products using radiosondes, ground truth, other satellites, and model analysis products. There are however several limitations of the version-6 retrieval products. One is a spurious dry daytime moisture bias. In addition, there are some erroneous water vapor features in the upper stratosphere near the top limit of the AIRS determination. For trace gases, the total column CO and total column methane (CH4) are dominated by the initial guess and should not be used for research purposes. The total ozone product is good, but has some limitations where it is too low over the warm oceanic pool and a bit too high over most land areas. Occasionally in the tropical ocean the algorithm confuses silicates from dust storms blowing off the African continent toward the Americas for high levels of ozone. The value for each grid box is the sum of the values that fall within the 1x1 area divided by the number of points in the box.
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Collection Progress
Active
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Use Constraints
The Earth Observing System Data and Information System (EOSDIS) data use policy for NASA data can be accessed at https://earthdata.nasa.gov/earth-observation-data/data-use-policy. For information on how to properly cite and acknowledge data from the NASA GES DISC, refer to https://disc.gsfc.nasa.gov/information/documents?title=data-policy.
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Access Constraints
None
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Title: Improved methodology for surface and atmospheric soundings, error estimates, and quality control procedures: the atmospheric infrared sounder science team version-6 retrieval algorithm
Publication Date: 2014-03-31
Author(s): Joel Susskind, John, M. Blaisdell, and Lena Iredell
Series: J. Appl. Rem. Sens.
Volume: 8
Issue: 1
Pages: 34
DOI: 10.1117/1.JRS.8.084994
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Title: The Atmospheric Infrared Sounder Version 6 Cloud Products
Publication Date: 2014-01-10
Author(s): B.H. Kahn, et.al.
Series: Atmospheric Chemistry and Physics
Volume: 14
Issue: 1
Pages: 399-426
DOI: 10.5194/acp-14-399-2014
Data Dates
| Creation | |
| Last Revision |
Publication References
Related URLs
Other Descriptive Keywords
Ancillary Keywords
- ATMOSPHERE
- CALIBRATED
- GEOLOCATED
- TEMPERATURE
- CLOUD
- EOSDIS
- Total Ozone
- Global Gridded
- Total Integrated Column Water Vapor Burden
- Total Integrated Column Cloud Liquid Water
- Total Integrated Column Carbon Monoxide
- Spectral IR Surface Emissivities
- Total Integrated Column Ozone Burden
- Outgoing Longwave Radiation Flux
- Clear Sky Outgoing Longwave Radiation Flux
- Relative Humidity Profile
- Cloud Layer Pressure At Coarse Cloud Resolution
- Cloud Layer Pressure At Fine Cloud Resolution
- Water Vapor Mass Mixing Ratio Profile
- Tropopause Height
- Tropopause Temperature
- Effective Methane Volume Mixing Ratio Profile
- Effective Carbon Monoxide Volume Mixing Ratio Profile
- Total Integrated Cloud Liquid Water
ISO Topic Categories
- CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
- IMAGERY/BASE MAPS/EARTH COVER
- ENVIRONMENT
- GEOSCIENTIFIC INFORMATION
Acquisition Information
Projects
| Project Short Name | Campaigns | Project Dates |
|---|---|---|
| Aqua | No campaigns listed. | No dates provided. |
Temporal Information
Spatial Information
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | CARTESIAN | CARTESIAN |
Location Keywords
- GEOGRAPHIC REGION
- GLOBAL
Data Centers
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NASA/GSFC/SED/ESD/GCDC/GESDISC
ARCHIVERGoddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
Data Contacts
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ED ESFANDIARI
Metadata AuthorED ESFANDIARI
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Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt, MD 20771
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GES DISC HELP DESK SUPPORT GROUP
Data Center ContactGES DISC HELP DESK SUPPORT GROUP
NASA/GSFC/SED/ESD/GCDC/GESDISC-
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt, MD 20771
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Archive And Distribution Information
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Format: HDF-EOS
Format Type: Native
Media: Online Archive
Fees: None
File Distribution Information
There is no direct distribution information for this collection.