Science Keywords>TERRESTRIAL HYDROSPHERE
Land Water Mask Derived from MODIS and SRTM L3 Global 250 m SIN GridEntry ID: MOD44W
Abstract: The MODIS 250 m land-water mask (Short Name: MOD44W) is an improvement over the existing MODIS Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Reflectance (NBAR) and MODIS land cover-based global land-water mask (Salomon et al., 2004). The MODIS NBAR and land cover–based mask was itself an improved version of the EOS DEM-based land-water mask (Logan et al., 1999). This MODIS ... 250 m mask is primarily created with three different data inputs:
1. The Shuttle Radar Topography Mission’s (SRTM) Water Body Dataset (SWBD) (Areas between 60° S to 60° N);
2. The MOD44C, a non-public, 250 m global 16-day composite collection based on 8+ years of Terra MODIS data, and 6+ years of Aqua MODIS data. This data set originally provided the input to produce the Vegetative Cover Conversion, and Vegetative Continuous Fields products (Areas between 60° N to 90° N); and
3. The MODIS–based Mosaic of Antarctica (MOA), which is a 250 m MODIS level-1b mosaic for Antarctica (Areas within Antarctica between 60° S and 90° S).
Other appropriate and publicly available data sets were also used to supplement the production of the MODIS 250 m land–water mask. Additional details regarding the methodology are available in the User Guide.
This marks the first time that such a global MODIS-SRTM land-water mask is offered publicly to end-users. This data set is provided in the same gridded tile structure that is common to several higher-level MODIS land products.
V005 Data Set Characteristics:
Area: ~10° x 10° (at the equator)
Image Dimensions: 4800 x 4800 (rows/columns)
File Size: ~250 KB
Resolution: 250 meters
Data Format: HDF-EOS
Science Data Sets (HDF SDS Layers): 2
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: Land Processes Distributed Active Archive Center
Dataset Title: Land Water Mask Derived from MODIS and SRTM L3 Global 250 m SIN Grid
Dataset Release Date: 2009
Dataset Release Place: Sioux Falls, South Dakota, USA
Dataset Publisher: U.S. Geological Survey
Version: V005Online Resource: https://lpdaac.usgs.gov/
Start Date: 2000-02-24Stop Date: 2000-02-24
Latitude Resolution: 250 m
Longitude Resolution: 250 m
Horizontal Resolution Range: 250 meters - < 500 meters
Quality For more information on potential sensor-related anomalies, consult the following URL: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=...
Access Constraints None
Use Constraints None
Data Set Progress
Distribution Media: HTTP
Distribution Size: ~250 MB
Distribution Format: HDF-EOS
Moderate Resolution Imaging Spectroradiometer (MODIS) publications written by the MODIS Science Team: [available online at http://modis.gsfc.nasa.gov/sci_team/pubs/]
National Aeronautics and Space Administration, 2000, MODIS data products catalog (EOS AM platform): [Greenbelt, Maryland], Goddard Space Flight Center, http://modis.gsfc.nasa.gov/data/dataprod/index.php.
National Aeronautics and Space Administration, revised 2004, EOS Reference Handbook, a Guide to NASA's Earth Science Enterprise and the Earth Observing System: Greenbelt, Maryland, Goddard Space Flight Center, 261 p. [available online in pdf format at http://eospso.gsfc.nasa.gov/ftp_docs/data_products_1.pdf].
Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date: 2011-01-05
Last DIF Revision Date: 2013-01-31