{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:22.994906", "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": "2021-Sep-08_to_2021-Sep-14_73.5_32.0"}, "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": 2021090000355}, "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": "September 08 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 14 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 122409.39027631623}, "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": 32.0}, "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": 73.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "73.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 72.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 75.0}, "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": 32.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[72.75, 27.35], [72.5, 27.25], [71.97, 27.47], [71.75, 28.0], [71.85, 28.25], [71.75, 28.5], [71.85, 28.75], [71.75, 29.0], 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time step", "value": {"2021-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.75, 32.5], [71.97, 33.03], [72.5, 33.25], [72.75, 33.15], [73.0, 33.25], [73.25, 33.15], [73.5, 33.25], [74.03, 33.03], [74.25, 32.5], [74.15, 32.25], [74.25, 32.0], [74.03, 31.47], [73.5, 31.25], [73.25, 31.35], [73.0, 31.25], [72.75, 31.35], [72.5, 31.25], [71.97, 31.47], [71.75, 32.0], [71.85, 32.25], [71.75, 32.5]]]]}, "2021-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.47, 31.47], [71.25, 32.0], [71.47, 32.53], [71.82, 32.68], [71.97, 33.03], [72.5, 33.25], [72.75, 33.15], [73.0, 33.25], [73.25, 33.15], [73.5, 33.25], [74.03, 33.03], [74.25, 32.5], [74.15, 32.25], [74.25, 32.0], [74.15, 31.75], [74.25, 31.5], [74.03, 30.97], [73.68, 30.82], [73.53, 30.47], [73.0, 30.25], [72.75, 30.35], [72.5, 30.25], [71.97, 30.47], [71.75, 31.0], [71.85, 31.25], [71.82, 31.32], [71.47, 31.47]]]]}, "2021-09-10T11:30:00.000000000": {"type": "MultiPolygon", 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