{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:48.667031", "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": "2025-Mar-11_to_2025-Mar-16_294.0_-23.5"}, "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": 2025030000314}, "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 11 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 16 2025"}, "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": 95345.5278528294}, "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": ["Argentina", "Bolivia, Plurinational State of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America"]}, "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": []}, "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": -23.5}, "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": 294.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "294.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 293.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 296.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -28.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-64.85, -22.75], [-64.75, -23.0], [-64.87, -23.3], [-64.75, -23.35], [-64.5, -23.25], [-63.97, -23.47], [-63.75, 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IPCC regions affected", "value": ["S.W.South-America", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.25, -23.5], [-67.02999999999997, -22.97], [-66.68, -22.82], [-66.64999999999998, -22.75], [-66.75, -22.5], [-66.52999999999997, -21.97], [-66.0, -21.75], [-65.47000000000003, -21.97], [-65.25, -22.5], [-65.35000000000002, -22.75], [-65.25, -23.0], [-65.35000000000002, -23.25], [-65.25, -23.5], [-65.35000000000002, -23.75], [-65.25, -24.0], [-65.35000000000002, -24.25], [-65.25, -24.5], [-65.47000000000003, -25.03], [-65.82, -25.18], [-65.97000000000003, -25.53], [-66.5, -25.75], [-67.02999999999997, -25.53], [-67.25, -25.0], [-67.04000000000002, -24.5], [-67.25, -24.0], [-67.14999999999998, -23.75], [-67.25, -23.5]]]]}, "2025-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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{"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.4159599304199446, 1.6799344380696652, 2.1571645100911496, 5.511904652913415, 4.277410125732445, 10.2821034749349]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7975694229584533, -2.9684412961785864, -4.20153829158535, -3.855781340624158, -3.4086665521325537, -2.428157025674409]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0690544806383855, -4.728440079578036, -5.800219825397164, -5.133899304909448, -4.114319840467942, -2.428157025674409]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6382123729289324, -1.7720328607637061, -2.0010429011317936, -1.7070809758820271, 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