Hurricane Maria
Description
Hurricane Data for Maria event, 2017
Files
Steps to reproduce
Wind and precipitation data collected by NASA are by Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA2) and Global Precipitation Measurement (GPM) product Integrated Multi-satellitE Retrievals for GPM (IMERG, version 7). Wind speed, wind direction and precipitation rate were derived from this data (see methodology in Gorokhovich, Y., Machado, E.A. Giron Melgar L.I., Gahremani M. Improving landslide hazard and risk mapping in Guatemala using terrain aspect. Natural Hazards, 81(2), 869-886 (2016)) and used in WDR calculation for four daily intervals (12 a.m., 6 a.m., 12 p.m. and 6 p.m.) and 72 model-levels (pressures/elevation levels) specified in documentation (Bosilovich, M. G., R. Lucchesi, and M. Suarez. MERRA-2: File Specification. GMAO Office Note No. 9 (Version 1.1), 73 pp. http://gmao.gsfc.nasa.gov/pubs/office_notes (2016)). Since Hurricane Maria left Puerto Rico by midnight of September 20, we used only 6 a.m., 12 p.m. and 6 p.m. intervals. It is highly likely that major landslide events occurred during this period. MERRA2 data include wind components U (eastward) and V (northward) obtained from the Meteorological Operational Satellite-A (MetOp-A) ASCAT and WindSat (Bosilovich, M. G., R. Lucchesi, and M. Suarez. MERRA-2: File Specification. GMAO Office Note No. 9 (Version 1.1), 73 pp. http://gmao.gsfc.nasa.gov/pubs/office_notes (2016). Both components are available in instantaneous data with frequency 3 and 6 hrs from 00:00 UTC and model-level (elevation) levels 1 - 72.