{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:15.846912", "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": "2013-May-10_to_2013-May-12_31.5_-29.5"}, "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": 2013050000421}, "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": "May 10 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 12 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 151587.2677572158}, "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": ["South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "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": ["Indian Ocean"]}, "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": -29.5}, "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": 31.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "31.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.25, -28.5], [29.47, -27.97], [29.82, -27.82], [29.97, -27.47], [30.5, -27.25], [30.75, -27.35], [30.82, -27.32], [30.97, -26.97], [31.5, -26.75], [32.0, -26.96], [32.32, -26.82], [32.47, -26.47], [33.0, -26.25], [33.53, -26.47], [33.68, -26.82], [34.03, -26.97], [34.18, -27.32], [34.5, -27.46], [35.0, -27.25], [35.25, -27.35], [35.32, -27.32], [35.47, -26.97], [36.0, -26.75], [36.53, -26.97], [36.75, -27.5], [36.53, -28.03], [36.18, -28.18], [36.03, -28.53], [35.68, -28.68], [35.65, -28.75], [35.75, -29.0], [35.53, -29.53], [35.18, -29.68], [35.03, -30.03], [34.68, -30.18], [34.53, -30.53], [34.0, -30.75], [33.75, -30.65], [33.68, -30.68], [33.53, -31.03], [33.0, -31.25], [32.75, -31.15], [32.5, -31.25], [32.25, -31.15], [32.0, -31.25], [31.47, -31.03], [31.32, -30.68], [31.25, -30.65], [31.18, -30.68], [31.03, -31.03], [30.5, -31.25], [29.97, -31.03], [29.75, -30.5], [29.97, -29.97], [30.32, -29.82], [30.35, -29.75], [30.32, -29.68], [29.97, -29.53], [29.82, -29.18], [29.47, -29.03], [29.25, -28.5]]]]}, "2013-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.25, -28.5], [29.47, -27.97], [29.82, -27.82], [29.97, -27.47], [30.5, -27.25], [30.75, -27.35], [30.82, -27.32], [30.97, -26.97], [31.5, -26.75], [32.0, -26.96], [32.32, -26.82], [32.47, -26.47], [33.0, -26.25], [33.53, -26.47], [33.68, -26.82], [34.03, -26.97], [34.18, -27.32], [34.5, -27.46], [35.0, -27.25], [35.25, -27.35], [35.32, -27.32], [35.47, -26.97], [36.0, -26.75], [36.53, -26.97], [36.75, -27.5], [36.53, -28.03], [36.18, -28.18], [36.03, -28.53], [35.68, -28.68], [35.65, -28.75], [35.75, -29.0], [35.53, -29.53], [35.18, -29.68], [35.03, -30.03], [34.68, -30.18], [34.53, -30.53], [34.0, -30.75], [33.75, -30.65], [33.68, -30.68], [33.53, -31.03], [33.0, -31.25], [32.75, -31.15], [32.5, -31.25], [32.25, -31.15], [32.0, -31.25], [31.47, -31.03], [31.32, -30.68], [31.25, -30.65], [31.18, -30.68], [31.03, -31.03], [30.5, -31.25], [29.97, -31.03], [29.75, -30.5], [29.97, -29.97], [30.32, -29.82], [30.35, -29.75], [30.32, -29.68], [29.97, -29.53], [29.82, -29.18], [29.47, -29.03], [29.25, -28.5]]]]}, "2013-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.25, -28.5], [29.47, -27.97], [29.82, -27.82], [29.97, -27.47], [30.5, -27.25], [30.75, -27.35], [30.82, -27.32], [30.97, -26.97], [31.5, -26.75], [32.0, -26.96], [32.32, -26.82], [32.47, -26.47], [33.0, -26.25], [33.53, -26.47], [33.68, -26.82], [34.03, -26.97], [34.18, -27.32], [34.5, -27.46], [35.0, -27.25], [35.25, -27.35], [35.32, -27.32], [35.47, -26.97], [36.0, -26.75], [36.53, -26.97], [36.75, -27.5], [36.53, -28.03], [36.18, -28.18], [36.03, -28.53], [35.68, -28.68], [35.65, -28.75], [35.75, -29.0], [35.53, -29.53], [35.18, -29.68], [35.03, -30.03], [34.68, -30.18], [34.53, -30.53], [34.0, -30.75], [33.75, -30.65], [33.68, -30.68], [33.53, -31.03], [33.0, -31.25], [32.75, -31.15], [32.5, -31.25], [32.25, -31.15], [32.0, -31.25], [31.47, -31.03], [31.32, -30.68], [31.25, -30.65], [31.18, -30.68], [31.03, -31.03], [30.5, -31.25], 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-2.5234781929750207]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.518558315336634, -5.322115266753656, -3.486873101245351]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.113587614256051, -2.3314074261114492, -1.7735447211846735]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.941058083121494, -2.786887587519808, -2.370719222707483]}}