{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:15.958163", "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-May-08_to_2025-May-13_94.0_29.0"}, "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": 2025050001458}, "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": "May 08 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 13 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 62307.140576632206}, "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": 29.0}, "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": 94.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "94.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 93.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 96.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[92.35, 28.75], [92.25, 29.0], [92.35, 29.25], [92.25, 29.5], [92.47, 30.03], [93.0, 30.25], [93.25, 30.15], [93.5, 30.25], [93.8, 30.13], [93.97, 30.53], [94.5, 30.75], [95.03, 30.53], [95.18, 30.18], [95.25, 30.15], [95.5, 30.25], [96.03, 30.03], [96.18, 29.68], [96.53, 29.53], [96.75, 29.0], [96.53, 28.47], [96.18, 28.32], [96.03, 27.97], [95.5, 27.75], [95.0, 27.96], [94.68, 27.82], [94.53, 27.47], [94.18, 27.32], [94.03, 26.97], [93.5, 26.75], [93.25, 26.85], [93.0, 26.75], [92.47, 26.97], [92.25, 27.5], [92.35, 27.75], [92.25, 28.0], [92.35, 28.25], [92.25, 28.5], [92.35, 28.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau", "S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.25, 28.0], [92.35, 28.25], [92.25, 28.5], [92.35, 28.75], [92.25, 29.0], [92.47, 29.53], [93.0, 29.75], [93.25, 29.65], [93.5, 29.75], [93.75, 29.65], [93.82, 29.68], [93.97, 30.03], [94.5, 30.25], [94.75, 30.15], [95.0, 30.25], [95.53, 30.03], [95.68, 29.68], [96.03, 29.53], [96.25, 29.0], [96.15, 28.75], [96.25, 28.5], [96.03, 27.97], [95.5, 27.75], [95.0, 27.96], [94.68, 27.82], [94.53, 27.47], [94.18, 27.32], [94.03, 26.97], [93.5, 26.75], [93.25, 26.85], [93.0, 26.75], [92.47, 26.97], [92.25, 27.5], [92.35, 27.75], [92.25, 28.0]]]]}, "2025-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.25, 28.0], [92.35, 28.25], [92.25, 28.5], [92.35, 28.75], [92.25, 29.0], [92.35, 29.25], [92.25, 29.5], [92.47, 30.03], [93.0, 30.25], [93.25, 30.15], [93.5, 30.25], [93.8, 30.13], [93.97, 30.53], [94.5, 30.75], [95.03, 30.53], [95.18, 30.18], [95.25, 30.15], [95.5, 30.25], [96.03, 30.03], [96.18, 29.68], [96.53, 29.53], [96.75, 29.0], [96.53, 28.47], [96.18, 28.32], [96.03, 27.97], [95.5, 27.75], [95.0, 27.96], [94.68, 27.82], [94.53, 27.47], [94.18, 27.32], [94.03, 26.97], [93.5, 26.75], [93.25, 26.85], [93.0, 26.75], [92.47, 26.97], [92.25, 27.5], [92.35, 27.75], [92.25, 28.0]]]]}, "2025-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.25, 28.0], [92.35, 28.25], [92.25, 28.5], [92.35, 28.75], [92.25, 29.0], [92.35, 29.25], [92.25, 29.5], [92.47, 30.03], [93.0, 30.25], [93.25, 30.15], [93.5, 30.25], [93.8, 30.13], [93.97, 30.53], [94.5, 30.75], [95.03, 30.53], [95.18, 30.18], [95.25, 30.15], [95.5, 30.25], [96.03, 30.03], [96.18, 29.68], [96.53, 29.53], [96.75, 29.0], [96.53, 28.47], [96.18, 28.32], [96.03, 27.97], [95.5, 27.75], [95.0, 27.96], [94.68, 27.82], [94.53, 27.47], [94.18, 27.32], [94.03, 26.97], [93.5, 26.75], [93.25, 26.85], [93.0, 26.75], [92.47, 26.97], [92.25, 27.5], [92.35, 27.75], [92.25, 28.0]]]]}, "2025-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.25, 29.0], [92.35, 29.25], [92.25, 29.5], [92.47, 30.03], [93.0, 30.25], [93.25, 30.15], [93.5, 30.25], [93.8, 30.13], [93.97, 30.53], [94.5, 30.75], [95.03, 30.53], [95.18, 30.18], [95.25, 30.15], [95.5, 30.25], [96.03, 30.03], [96.18, 29.68], [96.53, 29.53], [96.75, 29.0], [96.53, 28.47], [96.0, 28.25], [95.75, 28.35], [95.5, 28.25], [94.97, 28.47], [94.82, 28.82], [94.75, 28.85], [94.68, 28.82], [94.53, 28.47], [94.0, 28.25], [93.7, 28.38], [93.53, 27.97], [93.0, 27.75], [92.47, 27.97], [92.25, 28.5], [92.35, 28.75], [92.25, 29.0]]]]}, "2025-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.25, 29.5], [92.47, 30.03], [93.0, 30.25], [93.25, 30.15], [93.5, 30.25], [94.03, 30.03], [94.18, 29.68], [94.53, 29.53], [94.75, 29.0], [94.53, 28.47], [94.0, 28.25], [93.5, 28.46], [93.0, 28.25], [92.47, 28.47], [92.25, 29.0], [92.35, 29.25], [92.25, 29.5]]]]}, "2025-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.47, 30.03], [93.0, 30.25], [93.53, 30.03], [93.75, 29.5], [93.53, 28.97], [93.0, 28.75], [92.47, 28.97], [92.25, 29.5], [92.47, 30.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.458574984913014}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.8808978078921172}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.013857636628359, 10.97918826117035, 11.212284010735118, 5.8879245642460205, 3.3692006429036496, 0.13021113077803648]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.577424621582054, 21.214129384358728, 21.19432729085287, 10.722767130533896, 6.09783833821615, 0.13021113077803648]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.5533413529778133, 3.0421031061668633, 3.1657060129512984, 2.68770378716463, 2.4878202618605627, 2.216047831797823]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.079885809096197, 4.458574984913014, 4.3394981337481795, 3.9296552069976656, 2.64066488450851, 2.216047831797823]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5694064706380015, 1.8431810712922545, 1.853884266663107, 1.5332181701003953, 1.3190037044748373, 1.1487337269650895]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9866909962138048, 2.586735320626452, 2.4425658199532307, 2.2797587136865047, 1.4090638534431872, 1.1487337269650895]}}