MODIS/Terra Near Real Time (NRT) L3 Value-added Aerosol Optical Depth
Entry ID: MODAODHD_C5_NRT

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Summary
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 ... View entire text
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Description: 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.
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Geographic Coverage
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Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Originator/Creator: MODIS Adaptive Processing System (MODAPS) Services
Dataset Title: MODIS/Terra Near Real Time (NRT) value-added Aerosol Optical Depth Product
Version: V005
Online Resource: http://earthdata.nasa.gov/about-eosdis/news/nrt-value-added-modis-a...
Temporal Coverage
Start Date: 2014-10-14
Stop Date: 2014-10-21
Data Resolution
Latitude Resolution: 0.5 deg
Longitude Resolution: 0.5 degree
Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Temporal Resolution: 6 hr
Temporal Resolution Range: Hourly - < Daily
Quality 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.
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.

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Data Set Progress
IN WORK
Originating Center
Data Center
MODIS Adaptive Processing System (MODAPS) Services, Biospheric Information Systems Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA Supplemental Info
Data Center URL: http://modaps.nascom.nasa.gov/services/
Dataset ID: MODAODHD Collection 5.1

Data Center Personnel
Name: MODAPS USER SUPPORT OFFICE
Phone: 301-731-2917, 1-866-506-6347 (toll-free - US only)
Fax: 301-577-6622
Email: modapsuso at sigmaspace.com
Contact Address:
MODAPS USER SUPPORT OFFICE
4801 Forbes Boulevard
City: Lanham
Province or State: MD
Postal Code: 20706
Country: USA
Personnel
Role: TECHNICAL CONTACT
Phone: 301-731-2923
Email: neal.k.devine at nasa.gov
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Publications/References
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: ... View entire text
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2013-01-07
Last DIF Revision Date: 2014-02-25
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