AIRS/Aqua Level 1B AMSU (A1/A2) geolocated and calibrated brightness temperatures

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: AIRS Science Team/Moustafa Chahine
Publication_Date: 20070726
Title: AIRS/Aqua Level 1B AMSU (A1/A2) geolocated and calibrated brightness temperatures
Edition: 005
Geospatial_Data_Presentation_Form: Digital Science Data
Series_Information:
Series_Name: AIRABRAD
Issue_Identification:
Publication_Information:
Publication_Place: Greenbelt, MD, USA
Publisher: Goddard Earth Science Data and Information Services Center (GES DISC)
Other_Citation_Details:
Online_Linkage: http://disc.sci.gsfc.nasa.gov/datacollection/AIRABRAD_V005.html
Description:
Abstract:
The Atmospheric Infrared Sounder (AIRS) is a facility instrument 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. AIRS data will be generated continuously. Global coverage will be obtained twice daily (day and night) on a 1:30pm sun synchronous orbit from a 705-km altitude. The AMSU-A level 1B data set contains AMSU-A calibrated and geolocated brightness temperatures in degrees Kelvin. This data set is generated from AMSU-A Level 1A digital numbers (DN), including 15 microwave channels in the 50 - 90 GHz and 23 - 32 GHz regions of the spectrum. A day's worth of data is divided into 240 scenes each of 6 minute duration. An AMSU-A scene contains 30 cross-track footprints in each of 45 along-track scanlines, for a total of 45 x 30 = 1350 footprints per scene. The AMSU-A is co-aligned with the AIRS instrument onboard the Aqua platform so that successive blocks of 3 x 3 AIRS footprints are contained within the AMSU-A footprint. AMSU-A is primarily a temperature sounder that provides atmospheric information in the presence of clouds, which can be used to correct the AIRS infrared measurements for the effects of clouds. This is possible because non-precipitating clouds are for the most part transparent to microwave radiation, in contrast to visible and infrared radiation which are strongly scattered and absorbed by clouds. Combined with simultaneous measurements from the AIRS and HSB instruments, the calibrated AMSU-A brightness temperatures will also be used to initialize the surface temperature and atmospheric temperature profile required for the retrieval of the final AIRS geophysical products. (The Shortname for this product is AIRABRAD) Coverage: Global, Twice Daily (Daytime and Nighttime) Resolution: 40.5 km IFOV at nadir Spectral Range: AMSU-A1: 13 channels from 50 - 90 GHz AMSU-A2: 2 channels from 23 - 32 GHz
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20020521
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: 180.0
North_Bounding_Coordinate: 90.0
South_Bounding_Coordinate: -90.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > SPECTRAL/ENGINEERING > MICROWAVE > BRIGHTNESS TEMPERATURE
Theme_Keyword: AQUA > EARTH OBSERVING SYSTEM, AQUA
Theme_Keyword: AMSU-A > ADVANCED MICROWAVE SOUNDING UNIT-A
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: AQUA > EARTH OBSERVING SYSTEM (EOS), AQUA
Theme_Keyword: CWIC > CEOS WGISS INTEGRATED CATALOG
Theme_Keyword: Corrected Microwave Antenna Temperatures
Theme_Keyword: Corrected Microwave Antenna Temperatures Uncertainties
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: IMAGERY/BASE MAPS/EARTH COVER
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > ATLANTIC OCEAN
Place_Keyword: OCEAN > INDIAN OCEAN
Place_Keyword: OCEAN > PACIFIC OCEAN
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Place_Keyword: GEOGRAPHIC REGION > GLOBAL LAND
Place_Keyword: GEOGRAPHIC REGION > GLOBAL OCEAN
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: Twice Per Day; Day And Night; Orbital Repeat Cycle 16 Days
Access_Constraints: Data are expected to be available from the GSFC Earth Sciences (GES) Distributed Active Archive Center (DAAC) about one year after launch. The DAAC Science Team will provide regular updates regarding data product releases in the future.
Use_Constraints:
Not Available
Browse_Graphic:
Browse_Graphic_File_Name: http://disc.sci.gsfc.nasa.gov/AIRS/data-holdings/by-data-product/images/airsabrad.jpg
Browse_Graphic_File_Description:
Sample image of AIRABRAD
Browse_Graphic_File_Type:
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
V5_CalVal_Status_Summary.pdf http://disc.sci.gsfc.nasa.gov/AIRS/documentation/v5_docs/AIRS_V5_Release_User_Docs/V5_CalVal_Status_Summary.pdf
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 40.6 kilometers IFOV at nadir
Longitude_Resolution: 40.6 kilometers IFOV at nadir
Geographic_Coordinate_Units: Decimal degrees
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NASA/GSFC/SED/ESD/GCDC/GESDISC > 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
Contact_Person: GES DISC HELP DESK SUPPORT GROUP
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Goddard Earth Sciences Data and Information Services Center
Address: Code 610.2
Address: NASA Goddard Space Flight Center
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: 301-614-5224
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: gsfc-help-disc@lists.nasa.gov
Resource_Description: GES_DISC_AIRABRAD_V005
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: HDF-EOS
Transfer_Size: 0.4 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://disc.gsfc.nasa.gov/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://airsl1.gesdisc.eosdis.nasa.gov/ftp/data/s4pa...
Access_Instructions:
Access the AIRS Level 1B AMSU-A1 and AMSU-A2 Combined Geolocated and Calibrated Brightness Temperatures data by FTP.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://mirador.gsfc.nasa.gov/cgi-bin/mirador/homep...
Access_Instructions:
Access the AIRS Level 1B AMSU-A1 and AMSU-A2 Combined Geolocated and Calibrated Brightness Temperatures data via MIRADOR.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://airsl1.gesdisc.eosdis.nasa.gov/opendap/Aqua...
Access_Instructions:
Access the AIRS Level 1B AMSU-A1 and AMSU-A2 Combined Geolocated and Calibrated Brightness Temperatures data through OPeNDAP.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://disc.sci.gsfc.nasa.gov/SSW/#keywords=AIRABR...
Access_Instructions:
Access the AIRS Level 1B AMSU-A1 and AMSU-A2 Combined Geolocated and Calibrated Brightness Temperatures data using Simple Subset Wizard (Search and subset by date and spatial region).
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93...
Access_Instructions:
Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://airs.jpl.nasa.gov/
Access_Instructions:
AIRS home page at NASA/JPL. General information on the AIRS instrument suite, algorithms, and other AIRS-related activities can be found.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://disc.sci.gsfc.nasa.gov/AIRS/
Access_Instructions:
AIRS data support home page at Goddard Earth Sciences Data Information and Service Center/Distributed Active Archive Center (GES DISC DAAC). Online documentation, software to read, visualize and analyze AIRS data and data access information are available from this web site.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://airsl1.gesdisc.eosdis.nasa.gov/ftp/data/s4pa...
Access_Instructions:
README Document for AIRABRAD
Fees: None
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Metadata_Reference_Information:
Metadata_Date: 20020625
Metadata_Review_Date: 20141218
Metadata_Future_Review_Date: 20150630
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: ED ESFANDIARI
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Goddard Earth Sciences Data and Information Services Center
Address: Code 610.2
Address: NASA Goddard Space Flight Center
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: 301-614-5960
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: asghar.e.esfandiari@nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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