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Online Time Series Analysis of Land Products over Asia Monsoon Region via GiovanniTime series analysis is critical to the study of land cover/land use changes and climate. Time series studies at local-to-regional scales require higher spatial resolution, such as 1km or less, data. MODIS land products of 250m to 1km resolution enable such studies. However, such MODIS land data files are distributed in 10ox10o tiles, due to large data volumes. Conducting a time series study requires downloading all tiles that include the study area for the time period of interest, and mosaicking the tiles spatially. This can be an extremely time-consuming process. In support of the Monsoon Asia Integrated Regional Study (MAIRS) program, NASA GES DISC (Goddard Earth Sciences Data and Information Services Center) has processed MODIS land products at 1 km resolution over the Asia monsoon region (0o-60oN, 60o-150oE) with a common data structure and format. The processed data have been integrated into the Giovanni system (Goddard Interactive Online Visualization ANd aNalysis Infrastructure) that enables users to explore, analyze, and download data over an area and time period of interest easily. Currently, the following regional MODIS land products are available in Giovanni: 8-day 1km land surface temperature and active fire, monthly 1km vegetation index, and yearly 0.05o, 500m land cover types. More data will be added in the near future. By combining atmospheric and oceanic data products in the Giovanni system, it is possible to do further analyses of environmental and climate changes associated with the land, ocean, and atmosphere. This presentation demonstrates exploring land products in the Giovanni system with sample case scenarios.
Document ID
20120010413
Acquisition Source
Goddard Space Flight Center
Document Type
Presentation
Authors
Shen, Suhung (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Leptoukh, Gregory G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gerasimov, Irina (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 26, 2013
Publication Date
November 5, 2011
Subject Category
Meteorology And Climatology
Report/Patent Number
GSFC.OVPR.00448.2012
Funding Number(s)
CONTRACT_GRANT: NNG06EB68C
Distribution Limits
Public
Copyright
Public Use Permitted.

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