{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:24.268712", "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": "2023-May-04_to_2023-May-07_109.0_19.5"}, "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": 2023050001433}, "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 04 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 07 2023"}, "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": "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": 69841.54728718176}, "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": ["South China Sea"]}, "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": 19.5}, "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": 109.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "109.0\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": 110.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[107.85, 19.75], [107.75, 20.0], [107.85, 20.25], [107.75, 20.5], [107.85, 20.75], [107.75, 21.0], [107.97, 21.53], [108.5, 21.75], [108.75, 21.65], [109.0, 21.75], [109.25, 21.65], [109.5, 21.75], [110.03, 21.53], [110.2, 21.13], [110.5, 21.25], [111.03, 21.03], [111.25, 20.5], [111.15, 20.25], [111.25, 20.0], [111.03, 19.47], [110.68, 19.32], [110.65, 19.25], [110.75, 19.0], [110.53, 18.47], [110.18, 18.32], [110.03, 17.97], [109.68, 17.82], [109.53, 17.47], [109.0, 17.25], [108.47, 17.47], [108.32, 17.82], [107.97, 17.97], [107.75, 18.5], [107.85, 18.75], [107.75, 19.0], [107.85, 19.25], [107.75, 19.5], [107.85, 19.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.75, 20.0], [107.85, 20.25], [107.75, 20.5], [107.85, 20.75], [107.75, 21.0], [107.97, 21.53], [108.5, 21.75], [108.75, 21.65], [109.0, 21.75], [109.53, 21.53], [109.75, 21.0], [109.65, 20.75], [109.68, 20.68], [109.75, 20.65], [109.82, 20.68], [109.97, 21.03], [110.5, 21.25], [111.03, 21.03], [111.25, 20.5], [111.15, 20.25], [111.25, 20.0], [111.03, 19.47], [110.68, 19.32], [110.53, 18.97], [110.0, 18.75], [109.75, 18.85], [109.5, 18.75], [109.25, 18.85], [109.0, 18.75], [108.75, 18.85], [108.5, 18.75], [107.97, 18.97], [107.75, 19.5], [107.85, 19.75], [107.75, 20.0]]]]}, "2023-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.75, 19.0], [107.85, 19.25], [107.75, 19.5], [107.85, 19.75], [107.75, 20.0], [107.85, 20.25], [107.75, 20.5], [107.85, 20.75], [107.75, 21.0], [107.97, 21.53], [108.5, 21.75], [108.75, 21.65], [109.0, 21.75], [109.25, 21.65], [109.5, 21.75], [110.03, 21.53], [110.2, 21.13], [110.5, 21.25], [111.03, 21.03], [111.25, 20.5], [111.15, 20.25], [111.25, 20.0], [111.03, 19.47], [110.68, 19.32], [110.65, 19.25], [110.75, 19.0], [110.53, 18.47], [110.18, 18.32], [110.03, 17.97], [109.68, 17.82], [109.53, 17.47], [109.0, 17.25], [108.47, 17.47], [108.32, 17.82], [107.97, 17.97], [107.75, 18.5], [107.85, 18.75], [107.75, 19.0]]]]}, "2023-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.75, 19.0], [107.85, 19.25], [107.75, 19.5], [107.85, 19.75], [107.75, 20.0], [107.85, 20.25], [107.75, 20.5], [107.85, 20.75], [107.75, 21.0], [107.97, 21.53], [108.5, 21.75], [108.75, 21.65], [109.0, 21.75], [109.25, 21.65], [109.5, 21.75], [110.03, 21.53], [110.2, 21.13], [110.5, 21.25], [111.03, 21.03], [111.25, 20.5], [111.15, 20.25], [111.25, 20.0], [111.03, 19.47], [110.68, 19.32], [110.65, 19.25], [110.75, 19.0], [110.53, 18.47], [110.18, 18.32], [110.03, 17.97], [109.68, 17.82], [109.53, 17.47], [109.0, 17.25], [108.47, 17.47], [108.32, 17.82], [107.97, 17.97], [107.75, 18.5], [107.85, 18.75], [107.75, 19.0]]]]}, "2023-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.75, 19.0], [107.85, 19.25], [107.75, 19.5], [107.96, 20.0], [107.75, 20.5], [107.97, 21.03], [108.5, 21.25], [108.75, 21.15], [108.82, 21.18], [108.97, 21.53], [109.5, 21.75], [110.03, 21.53], [110.25, 21.0], [110.15, 20.75], [110.18, 20.68], [110.25, 20.65], [110.5, 20.75], [111.03, 20.53], [111.25, 20.0], [111.03, 19.47], [110.68, 19.32], [110.65, 19.25], [110.75, 19.0], [110.53, 18.47], [110.18, 18.32], [110.03, 17.97], [109.68, 17.82], [109.53, 17.47], [109.0, 17.25], [108.47, 17.47], [108.32, 17.82], [107.97, 17.97], [107.75, 18.5], [107.85, 18.75], [107.75, 19.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.9242917521957}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.6054605669556365}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.920939617367026, 29.267007539153894, 29.798437978667437, 29.073958658645267]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.896550447398454, 31.86797720777406, 32.68209682765723, 31.387622988685223]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.212048709614846, 2.619957917939999, 3.09795561274723, 2.2549315395950114]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.1532272583563667, 4.025271790885483, 4.9242917521957, 3.4885330184517898]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.508008238043421, 1.8763442999157116, 2.160746654195902, 1.5836593258535197]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8350030958572716, 2.637868702878036, 2.8633489302640647, 2.1233028076228044]}}