{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:00.384744", "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": "2024-Sep-25_to_2024-Sep-29_73.0_21.5"}, "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": 2024090000553}, "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 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 29 2024"}, "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": 89040.14474688281}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 21.5}, "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": 73.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "73.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 70.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 74.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[74.25, 20.5], [74.03, 19.97], [73.68, 19.82], [73.53, 19.47], [73.0, 19.25], [72.47, 19.47], [72.25, 20.0], [72.35, 20.25], [72.25, 20.5], [72.35, 20.75], [72.3, 20.88], [72.18, 20.82], [72.03, 20.47], [71.5, 20.25], [71.25, 20.35], [71.0, 20.25], [70.75, 20.35], [70.5, 20.25], [69.97, 20.47], [69.75, 21.0], [69.85, 21.25], [69.75, 21.5], [69.97, 22.03], [70.32, 22.18], [70.47, 22.53], [71.0, 22.75], [71.25, 22.65], [71.32, 22.68], [71.47, 23.03], [72.0, 23.25], [72.25, 23.15], [72.5, 23.25], [72.75, 23.15], [73.0, 23.25], [73.25, 23.15], [73.32, 23.18], [73.47, 23.53], [74.0, 23.75], [74.53, 23.53], [74.68, 23.18], [75.03, 23.03], [75.25, 22.5], [75.15, 22.25], [75.25, 22.0], [75.15, 21.75], [75.25, 21.5], [75.03, 20.97], [74.5, 20.75], [74.25, 20.85], [74.18, 20.82], [74.15, 20.75], [74.25, 20.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "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": {"2024-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.97, 21.53], [73.5, 21.75], [74.03, 21.53], [74.25, 21.0], [74.03, 20.47], [73.5, 20.25], [72.97, 20.47], [72.75, 21.0], [72.97, 21.53]]]]}, "2024-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.75, 21.5], [69.97, 22.03], [70.32, 22.18], [70.47, 22.53], [71.0, 22.75], [71.25, 22.65], [71.5, 22.75], [71.75, 22.65], [72.0, 22.75], [72.25, 22.65], [72.32, 22.68], [72.47, 23.03], [73.0, 23.25], [73.25, 23.15], [73.5, 23.25], [74.03, 23.03], [74.18, 22.68], [74.53, 22.53], [74.68, 22.18], [75.03, 22.03], [75.25, 21.5], [75.03, 20.97], [74.5, 20.75], [74.25, 20.85], [74.18, 20.82], [74.15, 20.75], [74.25, 20.5], [74.03, 19.97], [73.68, 19.82], [73.53, 19.47], [73.0, 19.25], [72.47, 19.47], [72.25, 20.0], [72.35, 20.25], [72.25, 20.5], [72.35, 20.75], [72.3, 20.88], [72.18, 20.82], [72.03, 20.47], [71.5, 20.25], [71.25, 20.35], [71.0, 20.25], [70.75, 20.35], [70.5, 20.25], [69.97, 20.47], [69.75, 21.0], [69.85, 21.25], [69.75, 21.5]]]]}, "2024-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.75, 21.5], [69.97, 22.03], [70.32, 22.18], [70.47, 22.53], [71.0, 22.75], [71.25, 22.65], [71.32, 22.68], [71.47, 23.03], [72.0, 23.25], [72.25, 23.15], [72.5, 23.25], [72.75, 23.15], [73.0, 23.25], [73.25, 23.15], [73.32, 23.18], [73.47, 23.53], [74.0, 23.75], [74.53, 23.53], [74.68, 23.18], [75.03, 23.03], [75.25, 22.5], [75.15, 22.25], [75.25, 22.0], [75.15, 21.75], [75.25, 21.5], [75.03, 20.97], [74.5, 20.75], [74.25, 20.85], [74.18, 20.82], [74.15, 20.75], [74.25, 20.5], [74.03, 19.97], [73.68, 19.82], [73.53, 19.47], [73.0, 19.25], [72.47, 19.47], [72.25, 20.0], [72.35, 20.25], [72.25, 20.5], [72.35, 20.75], [72.3, 20.88], [72.18, 20.82], [72.03, 20.47], [71.5, 20.25], [71.25, 20.35], [71.0, 20.25], [70.75, 20.35], [70.5, 20.25], [69.97, 20.47], [69.75, 21.0], [69.85, 21.25], [69.75, 21.5]]]]}, "2024-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.75, 21.5], [69.97, 22.03], 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26.19220631917318]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.11470184326174, 24.36580937703451, 24.582997894287132, 23.948177591959677, 25.024685160319052]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3596775504971674, -2.0481487623911425, -2.331782846407746, -2.3657787462682043, -2.6267463960414426]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3596775504971674, -3.0319442416863467, -3.6816138343500597, -3.2804630151001106, -3.384657864878932]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.30316973368381, -1.6977372220261702, -1.8483643560518932, -1.8469297920087204, -1.9848769757645874]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.30316973368381, -2.436487347003754, -2.580271174756094, -2.228380425906969, -2.670992208307795]}}