{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:11.468470", "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-Sep-30_to_2025-Oct-04_96.0_39.0"}, "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": 2025090002988}, "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 30 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 04 2025"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 82225.60685008841}, "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": 39.0}, "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": 96.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "96.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 95.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 101.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[101.03, 36.97], [100.5, 36.75], [100.25, 36.85], [100.0, 36.75], [99.75, 36.85], [99.5, 36.75], [99.2, 36.88], [99.03, 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["E.C.Asia", "Tibetan-Plateau", "E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.5, 38.75], [98.97, 38.97], [98.75, 39.5], [98.97, 40.03], [99.5, 40.25], [100.03, 40.03], [100.2, 39.63], [100.5, 39.75], [101.03, 39.53], [101.25, 39.0], [101.03, 38.47], [100.5, 38.25], [99.97, 38.47], [99.8, 38.88], [99.5, 38.75]]]]}, "2025-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[94.47, 38.97], [94.25, 39.5], [94.47, 40.03], [95.0, 40.25], [95.25, 40.15], [95.5, 40.25], [95.75, 40.15], [96.0, 40.25], [96.25, 40.15], [96.5, 40.25], [96.75, 40.15], [97.0, 40.25], [97.25, 40.15], [97.5, 40.25], [97.75, 40.15], [98.0, 40.25], [98.53, 40.03], [98.68, 39.68], [98.75, 39.65], [98.82, 39.68], [98.97, 40.03], [99.5, 40.25], [100.03, 40.03], [100.2, 39.63], [100.5, 39.75], [101.03, 39.53], [101.18, 39.18], 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