{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:46.208199", "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-04_to_2025-Mar-07_113.0_25.0"}, "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": 2025030000135}, "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 04 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 07 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 166082.91811341746}, "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": ["China"]}, "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": 25.0}, "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": 113.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "113.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 108.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 115.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[107.97, 23.03], [108.5, 23.25], [108.75, 23.15], [108.82, 23.18], [108.97, 23.53], [109.32, 23.68], [109.35, 23.75], 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"coordinates": [[[[108.5, 21.75], [107.97, 21.97], [107.75, 22.5], [107.97, 23.03], [108.5, 23.25], [108.75, 23.15], [108.82, 23.18], [108.97, 23.53], [109.32, 23.68], [109.35, 23.75], [109.25, 24.0], [109.35, 24.25], [109.25, 24.5], [109.35, 24.75], [109.25, 25.0], [109.35, 25.25], [109.25, 25.5], [109.35, 25.75], [109.25, 26.0], [109.47, 26.53], [110.0, 26.75], [110.53, 26.53], [110.75, 26.0], [110.65, 25.75], [110.68, 25.68], [110.75, 25.65], [111.0, 25.75], [111.25, 25.65], [111.5, 25.75], [111.75, 25.65], [112.0, 25.75], [112.5, 25.54], [112.82, 25.68], [112.97, 26.03], [113.32, 26.18], [113.35, 26.25], [113.25, 26.5], [113.47, 27.03], [114.0, 27.25], [114.53, 27.03], [114.75, 26.5], [114.65, 26.25], [114.75, 26.0], [114.65, 25.75], [114.68, 25.68], [114.75, 25.65], [115.0, 25.75], [115.25, 25.65], [115.5, 25.75], [116.03, 25.53], [116.25, 25.0], [116.03, 24.47], [115.68, 24.32], [115.53, 23.97], [115.18, 23.82], [115.03, 23.47], [114.5, 23.25], [114.25, 23.35], [114.0, 23.25], 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3.158723449707054, 3.378125762939476]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.667418354069101, -6.724601059816044, -6.385073301014612, -5.937945687984783]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.137410656523116, -8.453613620159672, -8.295163466400538, -7.117867588210345]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4890987014324157, -1.5893065686838177, -1.5380519590006618, -1.4389057373321612]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6819193311905123, -1.906522477202291, -2.110977193475273, -1.81481405837347]}}