Monthly Dynamic Surface Water Extent MODIS (DSWEmod) Images for the Conterminous United States – 2017
Dates
Publication Date
2021-09-28
Start Date
2017-01-01
End Date
2017-12-31
Citation
Petrakis, R.E., Soulard, C.E., Waller, E.K., and Walker, J.J., 2021. National Surface Water Maps using Daily MODIS Satellite Data for the Conterminous United States, 2003–2019: U.S. Geological Survey data release. https://doi.org/10.5066/P9UMFBDE.
Summary
Members from the U.S. Geological Survey (USGS) Patterns in the Landscape - Analyses of Cause and Effect (PLACE) team are releasing monthly surface water maps for the conterminous United States (U.S.) from 2003 through 2019 as 250-meter resolution geoTIFF files. The maps were produced using the Dynamic Surface Water Extent (DSWE) algorithm applied to daily Moderate Resolution Imaging Spectroradiometer (MODIS) imagery (DSWEmod) (Soulard et al., 2021) - see associated items. The DSWEmod model classifies the landscape (i.e., each MODIS pixel) into different classes of surface water based on quantified levels of confidence, including, i) high-confidence surface water (class 1), ii) moderate-confidence surface water (class 2), iii) potential [...]
Summary
Members from the U.S. Geological Survey (USGS) Patterns in the Landscape - Analyses of Cause and Effect (PLACE) team are releasing monthly surface water maps for the conterminous United States (U.S.) from 2003 through 2019 as 250-meter resolution geoTIFF files. The maps were produced using the Dynamic Surface Water Extent (DSWE) algorithm applied to daily Moderate Resolution Imaging Spectroradiometer (MODIS) imagery (DSWEmod) (Soulard et al., 2021) - see associated items. The DSWEmod model classifies the landscape (i.e., each MODIS pixel) into different classes of surface water based on quantified levels of confidence, including, i) high-confidence surface water (class 1), ii) moderate-confidence surface water (class 2), iii) potential wetland (class 3), and iv) low-confidence water/wetland (class 4), as well as a not-water class (class 0) and a no-data class (class 9).
This Child Item includes the monthly DSWEmod surface water maps for 2017. The image contains 12 bands, where each band represents a month from January (Band 1) to December (Band 12). The Parent Directory for this data release consists of a zipped folder which contains the monthly DSWEmod surface water maps from 2003 through 2019. There are 17 multi-band images within the zipped folder, equating to one image for each year from 2003 through 2019. Similar to this Child Item, each image consists of 12 bands, where each band value from 1-12 represents sequential months from January (Band 1) to December (Band 12). Each Child Item consists of a single year of DSWEmod surface water maps (e.g., DSWEmod_YearlyImages_2015) to allow for the user to download specific years rather than the full collection of DSWEmod data.
Click on title to download individual files attached to this item.
DSWEmod_YearlyImages_2017.xml “DSWEmod 2017 Metadata” Original FGDC Metadata
View
15.23 KB
application/fgdc+xml
DSWEmod_US_2017.tif “DSWEmod Monthly - 2017”
116.98 MB
image/geotiff
Purpose
Mapping surface water using satellite imagery can be challenging due to obstructions from clouds and cloud shadow. Daily satellite images from the Moderate Resolution Imaging Spectroradiometer (MODIS) can reduce the impact of these obstructions by providing more opportunities to access cloud-free scenes. The PLACE team developed monthly surface water maps for the conterminous United States (U.S.) using the Dynamic Surface Water Extent MODIS (DSWEmod) algorithm for all months from 2003 through 2019. The maps include the following four classes of surface water, based on quantified levels of confidence in the DSWEmod algorithm: i) high-confidence surface water (class 1), ii) moderate-confidence surface water (class 2), iii) potential wetland (class 3), and iv) low-confidence water/wetland (class 4), as well as a not-water class (class 0) and a no-data class (class 9) at 250-meter resolution.
