{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:15.657035", "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": "2022-Mar-12_to_2022-Mar-17_49.5_-13.0"}, "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": 2022030000405}, "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": "March 12 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 17 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 57299.85915293518}, "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": ["Indian Ocean", "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": -13.0}, "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": 49.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "49.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 47.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 51.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.25, -13.0], [48.47, -12.47], [49.0, -12.25], [49.25, -12.35], [49.5, -12.25], [49.75, -12.35], [49.88, -12.3], [49.75, -12.0], [49.97, -11.47], [50.5, -11.25], [50.75, -11.35], [51.0, -11.25], [51.53, -11.47], [51.75, -12.0], [51.53, -12.53], [51.0, -12.75], [50.75, -12.65], [50.63, -12.7], [50.75, -13.0], [50.65, -13.25], [50.75, -13.5], [50.53, -14.03], [50.0, -14.25], [49.75, -14.15], [49.5, -14.25], [48.97, -14.03], [48.82, -13.68], [48.47, -13.53], [48.25, -13.0]]]]}, "2022-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.47, -11.97], [48.82, -11.82], [48.97, -11.47], [49.5, -11.25], [49.75, -11.35], [50.0, -11.25], [50.25, -11.35], [50.5, -11.25], [50.75, -11.35], [51.0, -11.25], [51.53, -11.47], [51.75, -12.0], [51.53, -12.53], [51.18, -12.68], [51.03, -13.03], [50.68, -13.18], [50.65, -13.25], [50.75, -13.5], [50.65, -13.75], [50.75, -14.0], [50.53, -14.53], [50.0, -14.75], [49.47, -14.53], [49.32, -14.18], [48.97, -14.03], [48.82, -13.68], [48.47, -13.53], [48.25, -13.0], [48.35, -12.75], [48.25, -12.5], [48.47, -11.97]]]]}, "2022-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -13.03], [46.75, -12.5], [46.97, -11.97], [47.5, -11.75], [47.75, -11.85], [47.82, -11.82], [47.97, -11.47], [48.5, -11.25], [48.75, -11.35], [49.0, -11.25], [49.25, -11.35], [49.5, -11.25], [49.75, -11.35], [50.0, -11.25], [50.25, -11.35], [50.5, -11.25], [50.75, -11.35], [51.0, -11.25], [51.53, -11.47], [51.75, -12.0], [51.53, -12.53], [51.18, -12.68], [51.03, -13.03], [50.68, -13.18], [50.65, -13.25], [50.75, -13.5], [50.65, -13.75], [50.75, -14.0], [50.53, -14.53], [50.0, -14.75], [49.47, -14.53], [49.32, -14.18], [49.25, -14.15], [49.0, -14.25], [48.47, -14.03], [48.25, -13.5], [48.35, -13.25], [48.32, -13.18], [48.25, -13.15], [48.0, -13.25], [47.75, -13.15], [47.5, -13.25], [46.97, -13.03]]]]}, "2022-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -13.03], [46.75, -12.5], [46.97, -11.97], [47.5, -11.75], [47.75, -11.85], [47.82, -11.82], [47.97, 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24.95157049126226]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.796475317516013, 21.367870327077355, 21.687278391051393, 21.523835704605403, 23.97709843625063, 24.576764503354013]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1260344123533952, -1.404508648598061, -1.3632400957359083, -1.2738849782805286, -1.1667931763413373, -1.111095028742189]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5359044272275355, -2.7254606614301906, -2.2100263690984434, -2.2455557006046547, -1.4141721064577268, -1.146091165872292]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5605797608692833, -1.9719892159647139, -2.018891513556007, -1.90727820359666, -1.8518551344584238, -1.5653981262515433]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.007524047956886, -3.586806137735622, -2.905345564113293, -3.106221327045924, -2.3684106513554655, -1.5933221544020888]}}