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Global Change Master Directory (GCMD)
AIRS/Aqua L2 Standard Physical Retrieval (AIRS-only) V006 (AIRS2RET) at GES DISC
Entry ID: AIRS2RET_006


Summary
Abstract: 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. This product is similar to AIRX2RET. It is a new product produced using AIRS IR only because the radiometric noise in AMSU channel 4 started to increase significantly (since June 2007). The AIRS Standard Retrieval Product consists of retrieved estimates of cloud and surface properties, plus profiles of retrieved temperature, water vapor, ozone, carbon monoxide and methane. Estimates of the errors associated with these quantities is also part of the Standard Product. The temperature profile vertical resolution is 28 levels total between 1100 mb and 0.1 mb, while moisture profile is reported at 14 atmospheric layers between 1100 mb and 50 mb. The horizontal resolution is 50 km. An AIRS granule has been set as 6 minutes of data, 30 footprints cross track by 45 lines along track.

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Description: Access the data via HTTP.


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Description: Access the data via the OPeNDAP protocol.


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Description: Use the Simple Subset Wizard (SSW) to submit subset requests for data sets across multiple data centers from a single unified interface.


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Description: Use the Earthdata Search to find and retrieve data sets across multiple data centers.


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Description: AIRS home page at NASA/JPL. General information on the AIRS instrument,algorithms, and other AIRS-related activities can be found.


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Description: AIRS Documentation Page


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Description: README Document


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Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Creator: AIRS Science Team/Joao Teixeira
Dataset Title: AIRS/Aqua L2 Standard Physical Retrieval (AIRS-only) V006
Dataset Series Name: AIRS2RET
Dataset Release Date: 2013-01-15T00:00:00.000Z
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
Version: 006
Data Presentation Form: Digital Science Data
Online Resource: https://disc.gsfc.nasa.gov/datacollection/AIRS2RET_006.html


Temporal Coverage
Start Date: 2002-08-30


Location Keywords
GEOGRAPHIC REGION > GLOBAL


Science Keywords
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >SURFACE TEMPERATURE >AIR TEMPERATURE    [Definition]
ATMOSPHERE >AIR QUALITY >CARBON MONOXIDE    [Definition]
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD FRACTION    [Definition]
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD HEIGHT    [Definition]
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD TOP PRESSURE    [Definition]
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD TOP TEMPERATURE    [Definition]
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD VERTICAL DISTRIBUTION    [Definition]
LAND SURFACE >SURFACE RADIATIVE PROPERTIES >EMISSIVITY    [Definition]
ATMOSPHERE >ALTITUDE >GEOPOTENTIAL HEIGHT    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS >METHANE    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >OUTGOING LONGWAVE RADIATION    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >OXYGEN COMPOUNDS >OZONE    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >WATER VAPOR INDICATORS >TOTAL PRECIPITABLE WATER    [Definition]
OCEANS >OCEAN TEMPERATURE >SEA SURFACE TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC PRESSURE >SURFACE PRESSURE    [Definition]
LAND SURFACE >SURFACE THERMAL PROPERTIES >SKIN TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >SURFACE TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >SULFUR COMPOUNDS >SULFUR DIOXIDE    [Definition]
ATMOSPHERE >ALTITUDE >TROPOPAUSE    [Definition]
ATMOSPHERE >AIR QUALITY >TROPOSPHERIC OZONE    [Definition]
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >UPPER AIR TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >WATER VAPOR PROFILES    [Definition]
ATMOSPHERE >CLOUDS >CLOUD MICROPHYSICS >CLOUD LIQUID WATER/ICE    [Definition]


Platform
Aqua >Earth Observing System, Aqua    [Information]


Instrument
AIRS >Atmospheric Infrared Sounder    [Information]


Project
Aqua >Earth Observing System (EOS), Aqua    [Information]


Quality
The product is similar to AIRX2RET except the processing uses only the AIRS channels. No AMSU information was used in the generation of this product. 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 limitation of the AIRS-only Version-6 retrieval products. The AIRS-only surface classification determination is not optimal in polar regions. In addition, the Version-6 retrievals contain a spurious dry daytime moisture bias. Another is the thickness of the AIRS atmospheric temperature layer structure near the surface is not sensitive enough for the determination of a consistently accurate boundary layer. 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. In addition, the AIRS retrieval is not sensitive to either constituent near the surface. Also, the total column ozone is good, but the shape of the profile can be incorrect in regions of temperature inversion. 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. Each variable contains a flag indicating the quality of the value. The three options for this quality flag are: 0 for best quality, 1 for good quality, 2 for do not use.


Access Constraints
None


Keywords
ATMOSPHERE
CALIBRATED
GEOLOCATED
TEMPERATURE
CLOUD
EOSDIS
Carbon Monoxide
Cloud Liquid Water
Methane
Ozone
Spectral IR Surface Emissivities
TEMPERATURE
WATER VAPOR
Water Vapor Saturation Mass Mixing Ratio
Water Vapor Mass Mixing Ratio


Data Set Progress
ACTIVE


Data Center
Goddard 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    [Information]
Data Center URL: https://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at lists.nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Personnel
ED ESFANDIARI
Role: METADATA AUTHOR
Phone: 301-614-5960
Fax: 301-614-5268
Email: asghar.e.esfandiari at nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Publications/References
B. H. Kahn et al. (2014-01-01T00:00:00.000Z), The Atmospheric Infrared Sounder version 6 cloud products, 399-426, doi:10.5194/acp-14-399-2014, https://www.atmos-chem-phys.net/14/399/2014/acp-14-399-2014.html

Joel Susskind, John, M. Blaisdell, and Lena Iredell (2014-03-31T00:00:00.000Z), Improved methodology for surface and atmospheric soundings, error estimates, and quality control procedures: the atmospheric infrared sounder science team version-6 retrieval algorithm, J. Appl. Rem. Sens., 8, 1, 34, doi:10.1117/1.JRS.8.084994

Patrick Boylan, Junhong Wang, Stephen A. Cohn, Erik Fetzer, Eric S. Maddy, and Sung Wong, (2015-02-10T00:00:00.000Z), Validation of AIRS version 6 temperature profiles and surface-based inversions over Antarctica using Concordiasi dropsonde data, Journal of Geophysical Research, 120, 3, 992-1007, doi:10.1002/2014JD022551

L.N. Boisvert, D.L. Wu, T. Vihma, J.Susskind (2015-01-15T00:00:00.000Z), Verificaton of air/surface humidity differences from AIRS and ERA-Interim in support of turbulent flux estimation in the Arctic, Journal of Geophysical Research, Atmospheres, 120, 3, 945-963, doi:10.1002/2014JD02166

Jacola Roman, Robert Knuteson, Thomas August, Tim Hultberg, Steve Ackerman, and Hank Revercomb (2016-07-21T00:00:00.000Z), A global assessment of NASA AIRS v6 and EUMETSAT IASI v6 precipitable water vapor using ground‐based GPS SuomiNet stations, 15, 121, 8925-8948, doi:10.1002/2016JD024806

Adam B. Milstein, William J. Blackwell (2015-12-20T00:00:00.000Z), Neural network temperature and moisture retrieval algorithm validation for AIRS/AMSU and CrIS/ATMS, Journal of Geophysical Research, 121, 4, 1414-1430, doi:10.1002/2015JD024008

Journal Editors (), Validation of Atmospheric Infrared Sounder Observations, J. Geophys, Res. Atmospheres, 111, 9, doi:10.1029/2005/JD007020, This special issue contains several relevant articles.

Joel Susskind, Christopher D. Barnet, and John M. Blaisdell (2003-04-29T00:00:00.000Z), Retrieval of Atmospheric and Surface Parameters From AIRS/AMSU/HSB Data in the Presence of Clouds, 2, 41, 390-409, doi:10.1109/TGRS.2002.808236
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2013-01-10
Last DIF Revision Date: 2019-04-15



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