{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:47.653747", "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": "2026-Mar-18_to_2026-Mar-22_69.5_26.5"}, "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": 2026030000562}, "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 18 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 22 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 83095.8870840951}, "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": ["India", "Pakistan"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia"]}, "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": 26.5}, "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": 69.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "69.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 65.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 73.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[66.32, 27.18], [66.47, 27.53], [67.0, 27.75], [67.25, 27.65], [67.5, 27.75], [68.03, 27.53], [68.2, 27.13], [68.5, 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"description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.0, 26.25], [66.47, 26.47], [66.25, 27.0], [66.47, 27.53], [67.0, 27.75], [67.25, 27.65], [67.5, 27.75], [68.03, 27.53], [68.2, 27.13], [68.5, 27.25], [69.03, 27.03], [69.25, 26.5], [69.03, 25.97], [68.5, 25.75], [67.97, 25.97], [67.8, 26.38], [67.5, 26.25], [67.25, 26.35], [67.0, 26.25]]]]}, "2026-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[65.47, 27.03], [66.0, 27.25], [66.25, 27.15], [66.32, 27.18], [66.47, 27.53], [67.0, 27.75], [67.25, 27.65], [67.5, 27.75], [68.03, 27.53], [68.2, 27.13], [68.5, 27.25], [68.75, 27.15], [69.0, 27.25], [69.25, 27.15], [69.32, 27.18], [69.47, 27.53], [70.0, 27.75], [70.53, 27.53], [70.68, 27.18], [70.75, 27.15], [71.0, 27.25], [71.25, 27.15], 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