{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:58.002657", "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-Aug-18_to_2025-Aug-24_64.5_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": 2025080000660}, "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": "August 18 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 24 2025"}, "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": 63318.91415212798}, "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": ["Pakistan"]}, "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": 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": 64.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "64.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 64.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 68.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[65.68, 26.32], [65.53, 25.97], [65.0, 25.75], [64.75, 25.85], [64.5, 25.75], [63.97, 25.97], [63.75, 26.5], [63.85, 26.75], 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28.53], [66.68, 28.18], [67.03, 28.03], [67.25, 27.5], [67.03, 26.97], [66.5, 26.75], [66.25, 26.85], [66.18, 26.82], [66.03, 26.47], [65.5, 26.25], [65.25, 26.35], [65.18, 26.32], [65.03, 25.97], [64.5, 25.75], [63.97, 25.97], [63.75, 26.5], [63.85, 26.75], [63.75, 27.0]]]]}, "2025-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[63.75, 27.0], [63.97, 27.53], [64.32, 27.68], [64.47, 28.03], [65.0, 28.25], [65.25, 28.15], [65.32, 28.18], [65.47, 28.53], [66.0, 28.75], [66.5, 28.54], [67.0, 28.75], [67.53, 28.53], [67.68, 28.18], [68.03, 28.03], [68.18, 27.68], [68.53, 27.53], [68.68, 27.18], [69.03, 27.03], [69.25, 26.5], [69.03, 25.97], [68.68, 25.82], [68.53, 25.47], [68.0, 25.25], [67.47, 25.47], [67.32, 25.82], [67.25, 25.85], [67.0, 25.75], [66.47, 25.97], [66.32, 26.32], [66.25, 26.35], [66.0, 26.25], [65.75, 26.35], [65.68, 26.32], [65.53, 25.97], [65.0, 25.75], [64.75, 25.85], [64.5, 25.75], [63.97, 25.97], [63.75, 26.5], [63.85, 26.75], [63.75, 27.0]]]]}, 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27.271841939290425, 26.686322360568568, 27.162898847791837]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.939108784993493, 24.514637247721396, 24.844890848795615, 24.810554758707724, 26.93761342366537, 26.38947448730471, 26.879397328694665]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9396160669389246, -2.441696681465072, -2.8767379184760644, -2.5669041519166047, -2.088753526586936, -2.7603949331280355, -2.1958204905073635]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.34417192903112, -4.004213920736049, -4.130998027418002, -3.6717067940230663, -2.7320885638821437, -3.166528529127845, -2.6052649271382506]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily 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