{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:20.099073", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2010-Dec-18_to_2010-Dec-21_45.5_-15.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2010120000861}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "December 18 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 21 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 71579.85409972406}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["Mozambique Channel"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -15.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 45.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "45.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 43.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.47, -14.97], [44.82, -14.82], [44.97, -14.47], [45.5, -14.25], [45.75, -14.35], [46.0, -14.25], [46.43, -14.43], [46.25, -14.0], [46.35, -13.75], [46.25, -13.5], [46.35, -13.25], [46.25, -13.0], [46.47, -12.47], [46.82, -12.32], [46.97, -11.97], [47.5, -11.75], [48.03, -11.97], [48.25, -12.5], [48.15, -12.75], [48.25, -13.0], [48.03, -13.53], [47.68, -13.68], [47.65, -13.75], [47.68, -13.82], [48.03, -13.97], [48.25, -14.5], [48.03, -15.03], [47.5, -15.25], [46.97, -15.03], [46.82, -14.68], [46.57, -14.57], [46.75, -15.0], [46.65, -15.25], [46.75, -15.5], [46.53, -16.03], [46.18, -16.18], [46.03, -16.53], [45.5, -16.75], [45.25, -16.65], [45.0, -16.75], [44.47, -16.53], [44.25, -16.0], [44.35, -15.75], [44.25, -15.5], [44.47, -14.97]]]]}, "2010-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, -15.47], [44.0, -15.25], [44.25, -15.35], [44.32, -15.32], [44.47, -14.97], [44.82, -14.82], [44.97, -14.47], [45.5, -14.25], [45.75, -14.35], [46.0, -14.25], [46.25, -14.35], [46.38, -14.3], [46.25, -14.0], [46.35, -13.75], [46.25, -13.5], [46.35, -13.25], [46.25, -13.0], [46.47, -12.47], [46.82, -12.32], [46.97, -11.97], [47.5, -11.75], [48.03, -11.97], [48.25, -12.5], [48.15, -12.75], [48.25, -13.0], [48.03, -13.53], [47.68, -13.68], [47.65, -13.75], [47.68, -13.82], [48.03, -13.97], [48.25, -14.5], [48.03, -15.03], [47.68, -15.18], [47.54, -15.5], [47.75, -16.0], [47.53, -16.53], [47.0, -16.75], [46.5, -16.54], [46.18, -16.68], [46.03, -17.03], [45.5, -17.25], [45.25, -17.15], [45.0, -17.25], [44.75, -17.15], [44.5, -17.25], [44.25, -17.15], [44.0, -17.25], [43.47, -17.03], [43.25, -16.5], [43.35, -16.25], [43.25, -16.0], [43.47, -15.47]]]]}, "2010-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, -15.47], [44.0, -15.25], [44.25, -15.35], [44.32, -15.32], [44.47, -14.97], [44.82, -14.82], [44.97, -14.47], [45.5, -14.25], [45.75, -14.35], [46.0, -14.25], [46.25, -14.35], [46.38, -14.3], [46.25, -14.0], [46.35, -13.75], [46.25, -13.5], [46.35, -13.25], [46.25, -13.0], [46.47, -12.47], [46.82, -12.32], [46.97, -11.97], [47.5, -11.75], [48.03, -11.97], [48.25, -12.5], [48.15, -12.75], [48.25, -13.0], [48.03, -13.53], [47.68, -13.68], [47.65, -13.75], [47.68, -13.82], [48.03, -13.97], [48.25, -14.5], [48.03, -15.03], [47.68, -15.18], [47.54, -15.5], [47.75, -16.0], [47.53, -16.53], [47.0, -16.75], [46.5, -16.54], [46.18, -16.68], [46.03, -17.03], [45.5, -17.25], [45.25, -17.15], [45.0, -17.25], [44.75, -17.15], [44.5, -17.25], [44.25, -17.15], [44.0, -17.25], [43.47, -17.03], [43.25, -16.5], [43.35, -16.25], [43.25, -16.0], [43.47, -15.47]]]]}, "2010-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, -15.47], [44.0, -15.25], [44.25, -15.35], [44.32, -15.32], [44.47, -14.97], [45.0, -14.75], [45.25, -14.85], [45.5, -14.75], [45.75, -14.85], [45.82, -14.82], [45.97, -14.47], [46.5, -14.25], [46.75, -14.35], [47.0, -14.25], [47.53, -14.47], [47.75, -15.0], [47.54, -15.5], [47.75, -16.0], [47.53, -16.53], [47.0, -16.75], [46.5, 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"The daily evolution of mean t2m anomalies.", "value": [-0.9143739840327323, -1.287518333451949, -1.5182671648716333, -1.3887942093716674]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1703321499480808, -1.9431125838008256, -3.2209077143340323, -2.072760236314423]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4943886185146975, -1.8235595417588286, -2.0244760811567946, -1.713413488321666]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.780808088610601, -2.410414863768566, -2.726446802673029, -2.250741601927401]}}