{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:09:03.836334", "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-Nov-22_to_2025-Nov-24_130.0_44.0"}, "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": 2025110002236}, "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": "November 22 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 24 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 68486.14763058104}, "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", "Korea, Democratic People's Republic of"]}, "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": 44.0}, "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": 130.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "130.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 124.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 131.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[123.75, 41.0], [123.97, 41.53], [124.5, 41.75], [124.75, 41.65], [124.82, 41.68], [124.97, 42.03], [125.5, 42.25], [125.75, 42.15], [125.82, 42.18], [125.97, 42.53], [126.5, 42.75], [126.75, 42.65], [127.0, 42.75], [127.25, 42.65], [127.32, 42.68], [127.47, 43.03], [127.82, 43.18], [127.88, 43.3], [127.47, 43.47], [127.25, 44.0], [127.47, 44.53], [128.0, 44.75], [128.25, 44.65], [128.5, 44.75], [129.03, 44.53], [129.18, 44.18], [129.25, 44.15], [129.32, 44.18], [129.47, 44.53], [130.0, 44.75], [130.53, 44.53], [130.68, 44.18], [131.03, 44.03], [131.18, 43.68], [131.53, 43.53], [131.75, 43.0], [131.53, 42.47], [131.0, 42.25], [130.75, 42.35], [130.5, 42.25], [130.25, 42.35], [130.0, 42.25], [129.75, 42.35], [129.68, 42.32], [129.65, 42.25], [129.75, 42.0], [129.53, 41.47], [129.0, 41.25], [128.7, 41.38], [128.53, 40.97], [128.0, 40.75], [127.75, 40.85], [127.5, 40.75], [127.0, 40.96], [126.68, 40.82], [126.65, 40.75], [126.75, 40.5], [126.53, 39.97], [126.0, 39.75], [125.47, 39.97], [125.32, 40.32], [125.25, 40.35], [125.0, 40.25], [124.75, 40.35], [124.5, 40.25], [123.97, 40.47], [123.75, 41.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.5, 40.25], [123.97, 40.47], [123.75, 41.0], [123.97, 41.53], [124.5, 41.75], [124.75, 41.65], [124.82, 41.68], [124.97, 42.03], [125.5, 42.25], [125.75, 42.15], [125.82, 42.18], [125.97, 42.53], [126.5, 42.75], [126.75, 42.65], [127.0, 42.75], [127.25, 42.65], [127.32, 42.68], [127.47, 43.03], [127.82, 43.18], [127.88, 43.3], [127.47, 43.47], [127.25, 44.0], [127.47, 44.53], [128.0, 44.75], [128.25, 44.65], [128.5, 44.75], [129.03, 44.53], [129.18, 44.18], [129.25, 44.15], [129.32, 44.18], [129.47, 44.53], [130.0, 44.75], [130.53, 44.53], [130.68, 44.18], [131.03, 44.03], [131.18, 43.68], [131.53, 43.53], [131.75, 43.0], [131.53, 42.47], [131.0, 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"mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.407205094405541}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.5683541191949644, 1.8148524814182565, 0.7756279839409785]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.8078831990559934, 4.536127980550134, 3.179366048177087]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.284338982706523, 7.803620404387105, 7.133655896122997]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.779359060847867, 10.30180071553292, 8.54781751003344]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4281846730900116, 1.5495026231889992, 1.4208717548145195]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6516391302130655, 1.8316218402794608, 1.6434057378666371]}}