{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:03.709376", "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-09_to_2025-Mar-11_81.5_38.0"}, "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": 2025030001503}, "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 09 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 11 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": 75540.31163588975}, "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": 38.0}, "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": 81.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 79.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 84.0}, "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": 39.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[78.47, 38.53], [78.82, 38.68], [78.97, 39.03], [79.5, 39.25], [79.75, 39.15], [80.0, 39.25], [80.25, 39.15], [80.5, 39.25], [80.75, 39.15], [80.82, 39.18], [80.97, 39.53], [81.5, 39.75], [82.03, 39.53], [82.18, 39.18], [82.25, 39.15], [82.5, 39.25], [82.75, 39.15], [83.0, 39.25], [83.25, 39.15], [83.5, 39.25], [84.03, 39.03], [84.25, 38.5], [84.15, 38.25], [84.18, 38.18], [84.53, 38.03], [84.75, 37.5], [84.53, 36.97], [84.0, 36.75], [83.5, 36.96], [83.0, 36.75], [82.75, 36.85], [82.68, 36.82], [82.53, 36.47], [82.0, 36.25], [81.5, 36.46], [81.0, 36.25], [80.47, 36.47], [80.32, 36.82], [80.25, 36.85], [80.0, 36.75], [79.75, 36.85], [79.5, 36.75], [78.97, 36.97], [78.82, 37.32], [78.47, 37.47], [78.25, 38.0], [78.47, 38.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia", "Tibetan-Plateau"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, 37.47], [78.25, 38.0], [78.47, 38.53], [78.82, 38.68], [78.97, 39.03], [79.5, 39.25], [79.75, 39.15], [80.0, 39.25], [80.25, 39.15], [80.5, 39.25], [80.75, 39.15], [80.82, 39.18], [80.97, 39.53], [81.5, 39.75], [82.03, 39.53], [82.18, 39.18], [82.25, 39.15], [82.5, 39.25], [82.75, 39.15], [83.0, 39.25], [83.25, 39.15], [83.5, 39.25], [84.03, 39.03], [84.25, 38.5], [84.15, 38.25], [84.18, 38.18], [84.53, 38.03], [84.75, 37.5], [84.53, 36.97], [84.0, 36.75], [83.5, 36.96], [83.0, 36.75], [82.75, 36.85], [82.68, 36.82], [82.53, 36.47], [82.0, 36.25], [81.5, 36.46], [81.0, 36.25], [80.47, 36.47], [80.32, 36.82], [80.25, 36.85], [80.0, 36.75], [79.75, 36.85], [79.5, 36.75], [78.97, 36.97], [78.82, 37.32], [78.47, 37.47]]]]}, "2025-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, 37.47], [78.25, 38.0], [78.47, 38.53], [78.82, 38.68], [78.97, 39.03], [79.5, 39.25], [79.75, 39.15], [80.0, 39.25], [80.25, 39.15], [80.5, 39.25], [80.75, 39.15], [80.82, 39.18], [80.97, 39.53], [81.5, 39.75], [82.03, 39.53], [82.18, 39.18], [82.25, 39.15], [82.5, 39.25], [82.75, 39.15], [83.0, 39.25], [83.25, 39.15], [83.5, 39.25], [84.03, 39.03], [84.25, 38.5], [84.15, 38.25], [84.18, 38.18], [84.53, 38.03], [84.75, 37.5], [84.53, 36.97], [84.0, 36.75], [83.5, 36.96], [83.0, 36.75], [82.75, 36.85], [82.68, 36.82], [82.53, 36.47], [82.0, 36.25], [81.5, 36.46], [81.0, 36.25], [80.47, 36.47], [80.32, 36.82], [80.25, 36.85], [80.0, 36.75], [79.75, 36.85], [79.5, 36.75], [78.97, 36.97], [78.82, 37.32], [78.47, 37.47]]]]}, "2025-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, 37.47], [78.25, 38.0], [78.47, 38.53], [78.82, 38.68], [78.97, 39.03], [79.5, 39.25], [79.75, 39.15], [80.0, 39.25], [80.25, 39.15], [80.5, 39.25], [80.75, 39.15], [80.82, 39.18], [80.97, 39.53], [81.5, 39.75], [82.03, 39.53], [82.18, 39.18], [82.25, 39.15], [82.5, 39.25], [82.75, 39.15], [83.0, 39.25], [83.25, 39.15], [83.5, 39.25], [84.03, 39.03], [84.25, 38.5], [84.15, 38.25], [84.18, 38.18], [84.53, 38.03], [84.75, 37.5], [84.53, 36.97], [84.0, 36.75], [83.5, 36.96], [83.0, 36.75], [82.75, 36.85], [82.68, 36.82], [82.53, 36.47], [82.0, 36.25], [81.5, 36.46], [81.0, 36.25], [80.47, 36.47], [80.32, 36.82], [80.25, 36.85], [80.0, 36.75], [79.75, 36.85], [79.5, 36.75], [78.97, 36.97], [78.82, 37.32], [78.47, 37.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.116522766923254}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.414504741262028}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.280786378922016, 13.658749086113346, 13.525760207637745]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.274186706542991, 14.462738291422568, 14.744573211669945]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.075890332518234, 5.257959794317621, 4.9096640969502285]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.116522766923254, 5.718218907150117, 5.790230344116651]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.0000819680783186, 1.6738827581526725, 1.5120160877715452]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.29481512885904, 1.8177654960050498, 1.8092500495699988]}}