USDA/NASS Disaster Analysis Web Page https://www.nass.usda.gov/Research_and_Science/Disaster-Analysis/index.php Metadata Event: Hurricane Irma Last Updated: October 1, 2018 ------------------------------------------------------------------------- ------------------------------------------------------------------------- File: Hurricane_Irma_Inundation_Layer.zip Description: This dataset is a 2018 inundation raster layer created to estimate the extent of cropland and pasture/hay inundated by flooding from Hurricane Irma. The study area was the state of Florida in the United States of America. Data represent cropland, inundated cropland, pasture/hay, inundated pasture/hay, water bodies, and other land. Projection: Albers Conical Equal Area Spatial Resolution: 30 meter Attribute Table Value Class_Name 1 Water 2 Other 10 Cropland 11 Inundated Cropland 20 Pasture Hay 21 Inundated Pasture Hay -------------------- Imagery Inputs Sentinel-1A Data: interferometric wide swath (250 kilometer), Level-1 Ground Range Detected (GRD), 5x20 meter spatial resolution, and dual polarization (VV, VH) Imagery Download: Copernicus Open Access Hub https://scihub.copernicus.eu/dhus/ Pre-Flood Imagery Input Dates: August 3, 2017 August 29, 2017 September 1, 2017 September 3, 2017 Post-Flood Imagery Input Dates: September 10, 2017 September 12, 2017 September 13, 2017 September 14, 2017 September 15, 2017 -------------------- Land Cover Inputs NASS 2016 Cultivated Layer (planted acres) Obtained From: https://www.nass.usda.gov/Research_and_Science/Cropland/Release/index.php NASS 2016 Cropland Data Layer (planted acres) Obtained From: CropScape: https://nassgeodata.gmu.edu/CropScape/ Disclaimer: These data are not official NASS estimates. -------------------- Processing Software Sentinel Application Platform (SNAP) Toolbox 6.0 http://step.esa.int/main/download/ Hexagon ERDAS Imagine 2016 http://www.hexagongeospatial.com/ Esri ArcGIS 10.3.1 http://www.esri.com/ -------------------- Methodology Boryan, C., Z. Yang, A. Sandborn, P. Willis, and B. Haack (2018). Operational Agricultural Flood Monitoring With Sentinel-1 Synthetic Aperture Radar. IGARSS 2018, Valenca Spain, July 22-27, 2018. Posted 08/09/2018 https://www.nass.usda.gov/Research_and_Science/Cropland/docs/Boryan_IGARSS2018%20_Flood.pdf ------------------------------------------------------------------------- ------------------------------------------------------------------------- File: Hurricane_Irma_Flood_Assessment_Report.pdf Description: The Assessment Report provides a brief overview of the disaster event and the analysis that USDA/NASS conducted to estimate the extent of cropland and pasture/hay inundated by flooding from Hurricane Irma. The report provides an overview of the raster data created with select zooms of affected cropland and pasture/hay. Total area of cropland is defined by official NASS Florida 2017 estimates. Percentages, inundated acres, and pasture/hay total area are defined from the NASS Final Crop Inundation Layer. ------------------------------------------------------------------------- ------------------------------------------------------------------------- File: Hurricane_Irma_Wind_Swath_Map.pdf Description: The wind swath maps utilize NOAA hurricane data and land cover data, to derive the percent of agricultural land located within each wind swath polygon. -------------------- Hurricane Inputs NOAA National Hurricane Center https://www.nhc.noaa.gov/gis/ Preliminary Best Track - Hurricane Irma Obtained From: https://www.nhc.noaa.gov/gis/archive_besttrack_results.php?id=al11&year=2017&name=Hurricane%20IRMA Accessed: September 11, 2017, 12:00 PM Attribute Data RADII Description 34 Wind speeds are between 34 and 49 knots (39 and 57 miles per hour) - Tropical Storm Speeds 50 Wind speeds are between 50 and 63 knots (58 and 73 miles per hour) 64 Wind speeds are greater than 64 knots (74 miles per hour) - Hurricane Speeds -------------------- Land Cover Inputs NASS 2016 Cropland Data Layer (planted acres) Obtained From: CropScape: https://nassgeodata.gmu.edu/CropScape/ Disclaimer: These data are not official NASS estimates. -------------------- Estimates NASS Quickstats https://quickstats.nass.usda.gov/ NASS official 2017 estimates were derived from planted acres for corn, cotton, peanuts, and soybeans, harvested acres for sugarcane, and bearing acres for citrus in 2-16 in Alabama, Florida, Georgia, and South Carolina. https://quickstats.nass.usda.gov/results/C03005EA-CC3F-3876-B917-F227C332EAD9 ------------------------------------------------------------------------- ------------------------------------------------------------------------- File: Inundation_Maps_by_County.zip Description: The county map file displays cultivation and rangeland affected by Hurricane Irma, as well as contains a table of cattle inventory by county in Florida. -------------------- Inundation Data Input Hurricane_Irma_Inundation_Layer.zip See metadata above. -------------------- Livestock Data Input NASS official 2017 estimates were derived from Quickstats. Query: Cattle, including calves - Inventory, 2017 https://quickstats.nass.usda.gov/results/4FDE8977-1D83-3C30-806F-C9F44FEFEA50 ------------------------------------------------------------------------- -------------------------------------------------------------------------