MODIS/Terra NRT value-added Aerosol Optical Depth Product

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: MODIS/Terra NRT value-added Aerosol Optical Depth Product
Edition: Collection 5.1
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place:
Publisher:
Other_Citation_Details:
Online_Linkage: http://earthdata.nasa.gov/about-eosdis/news/nrt-value-added-modis-aerosol-optical-depth-product-available
Description:
Abstract:
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with its 2330 km viewing swath width provides almost daily global coverage. It acquires data in 36 high spectral resolution bands between 0.415 to 14.235 micron with spatial resolutions of 250m(2 bands), 500m(5 bands),and 1000m (29 bands). MODIS sensor counts, calibrated radiances, geolocation products and all derived geophysical atmospheric and ocean products are archived at various DAACs and has been made available to public since April 2000. The shortname for this level-3 MODIS aerosol product is MODAODHD. The Naval Research Laboratory and the University of North Dakota developed this value-added aerosol optical depth dataset based on MODIS Level 2 aerosol products. MODAODHD is a gridded product and is specifically designed for quantitative applications including data assimilation and model validation. It is available through LANCE-MODIS. It offers several enhancements over the MODIS Level 2 data on which it is based. These enhancements include stringent filtering to reduce outliers, eliminate cloud contamination, and exclude conditions where aerosol detection is likely to be inaccurate; reduction of systematic biases over land and ocean by empirical corrections; reduction of random variation in AOD values by spatial averaging; quantitative estimation of uncertainty for each AOD data point. he MxDAODHD granules are produced every six hours, and time-stamped 00:00, 06:00, 12:00, and 18:00 (all times UTC). Each granule includes MODIS observations from +/-3 hours from the timestamp (e.g. 12:00 product includes MODIS data from 09:00-15:00 UTC). Production is initiated as soon as the Level 2 inputs become available in the LANCE system. See the LANCE-MODIS page for more data set information: http://earthdata.nasa.gov/data/near-real-time-data/data-products/modis or visit the product page: http://earthdata.nasa.gov/about-eosdis/news/nrt-value-added-modis-aerosol-optical-depth-product-available
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Hyer, E. J., J. S. Reid, and J. Zhang (2011), An over-land aerosol optical depth data set for data assimilation by filtering, correction, and aggregation of MODIS Collection 5 optical depth retrievals, Atmospheric Measurement Techniques, 4, 379-408, doi: 10.5194/amt-4-379-2011. Levy, R. C., L. A. Remer, S. Mattoo, E. F. Vermote, and Y. J. Kaufman (2007), Second-generation operational algorithm: Retrieval of aerosol properties over land from inversion of Moderate Resolution Imaging Spectroradiometer spectral reflectance, J. Geophys. Res.-Atmos., 112(D13), D13211. Remer, L. A., et al. (2005), The MODIS aerosol algorithm, products, and validation, J. Atmos. Sci., 62(4), 947-973. Shi, Y., Zhang, J., Reid, J. S., Holben, B., Hyer, E. J., and Curtis, C.: An analysis of the collection 5 modis over-ocean aerosol optical depth product for its implication in aerosol assimilation, Atmos. Chem. Phys., 11, 557-565, 10.5194/acp-11-557-2011, 2011. Zhang, J. L., and Reid, J. S.: MODIS aerosol product analysis for data assimilation: Assessment of over-ocean level 2 aerosol optical thickness retrievals, J. Geophys. Res.-Atmos., 111, 2006. Zhang, J. L., Reid, J. S., Westphal, D. L., Baker, N., and Hyer, E. J.: A System for Operational Aerosol Optical Depth Data Assimilation over Global Oceans, Journal of Geophysical Research, 113, doi:10.1029/2007JD009065, 2008.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20121229
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 > ATMOSPHERE > AEROSOLS > AEROSOL BACKSCATTER
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL EXTINCTION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL OPTICAL DEPTH/THICKNESS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL OPTICAL DEPTH/THICKNESS > ANGSTROM EXPONENT
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL PARTICLE PROPERTIES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL RADIANCE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > CARBONACEOUS AEROSOLS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > CLOUD CONDENSATION NUCLEI
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > DUST/ASH/SMOKE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > NITRATE PARTICLES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > ORGANIC PARTICLES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > PARTICULATE MATTER
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > SULFATE PARTICLES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > OPTICAL DEPTH/THICKNESS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > RADIATIVE FLUX
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > REFLECTANCE
Theme_Keyword: TERRA > EARTH OBSERVING SYSTEM, TERRA (AM-1)
Theme_Keyword: MODIS > MODERATE-RESOLUTION IMAGING SPECTRORADIOMETER
Theme_Keyword: DODS > DISTRIBUTED OCEANOGRAPHIC DATA SYSTEM
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: TERRA > EARTH OBSERVING SYSTEM (EOS), TERRA
Theme_Keyword: Aerosol Optical Depth
Theme_Keyword: Aerosol Optical Thickness
Theme_Keyword: Aerosol Index
Theme_Keyword: Near Real Time (nrt)
Theme_Keyword: Lance
Theme_Keyword: Eosdis
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: 6 Hr
Temporal_Keyword: Hourly - < Daily
Access_Constraints: Not Available
Use_Constraints:
Near real-time products are generated and available to registered users via FTP with an average latency of less than 3 hours. These products should be used in fields where timeliness of data is vital to the program, such as numerical weather prediction and forecasting, monitoring of natural hazards, disaster relief, agriculture and homeland security. Standard science products should be used for latency independent research and applications, long term studies and trend analyses. Standard products are created using the best available ancillary, calibration and ephemeris information and are an internally consistent, well-calibrated record of the Earth’s geophysical properties to support science. MODIS standard products are available from LAADS Web at: http://ladsweb.nascom.nasa.gov/
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The 'version 051' or 'collection 051' product is the latest version available. The quality of this version 051 product is established as 'Validated' . This means its accuracy has been assessed over a widely distributed set of locations and time periods via several ground-truth and validation efforts. Results are peer-reviewed and published at scientific conferences and workshops.
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: 0.5 deg
Longitude_Resolution: 0.5 degree
Geographic_Coordinate_Units: Decimal degrees
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NASA/GSFC/SED/ESD/HBSL/BISB/LAADS > L1 and Atmosphere Archive and Distribution System,Biospheric Information Systems Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
Contact_Person: LAADS USER SUPPORT TEAM
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: LAADS User Support Team
Address: 4801 Forbes Boulevard
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: 301-731-2917, 1-866-506-6347 (toll-free - US only)
Contact_Facsimile_Telephone: 301-577-6622
Contact_Electronic_Mail_Address: modapsuso@sigmaspace.com
Resource_Description: MODAODHD Collection 5.1
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://ladsweb.nascom.nasa.gov/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://earthdata.nasa.gov/data/near-real-time-data...
Access_Instructions:
Near real-time (NRT) data are available from MODAPS for certain Aqua and Terra MODIS L0, L1, L2, L2G, and L3 products. Whereas the standard MODIS forward processing acquires 2-hour L0 files for Aqua and Terra from EDOS within 7-8 hours of real time, LANCE-MODIS acquires session-based L0 files from EDOS and the end of the session is available within 10-30 minutes after real time.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://ladsweb.nascom.nasa.gov/data/search.html
Access_Instructions:
Web site for MODIS Collection 4 atmosphere and Collection 5 L1B, Geo and atmosphere data ordering. Web site for Suomi NPP VIIRs, ENVISAT MERIS, and Ancillary data ordering.
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://earthdata.nasa.gov/data/near-real-time-data...
Access_Instructions:
Land Atmosphere Near Real-Time Capability for EOS
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://earthdata.nasa.gov/about-eosdis/news/nrt-va...
Access_Instructions:
View data set description.
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20130107
Metadata_Review_Date: 20130610
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: ASAD ULLAH
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Contact_Voice_Telephone: 302-731-2915
Contact_Electronic_Mail_Address: asad.ullah@sigmaspace.com
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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