{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:34.707513", "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-Apr-01_to_2023-Apr-06_108.5_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": 2023040001243}, "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": "April 01 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 06 2023"}, "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": 84106.85017639783}, "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": 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": 108.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "108.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 107.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 110.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[110.75, 19.0], [110.65, 18.75], [110.75, 18.5], [110.53, 17.97], [110.0, 17.75], [109.75, 17.85], [109.5, 17.75], [109.25, 17.85], [109.0, 17.75], [108.75, 17.85], [108.5, 17.75], [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], [107.82, 19.82], [107.75, 19.85], [107.5, 19.75], [106.97, 19.97], [106.75, 20.5], [106.97, 21.03], [107.32, 21.18], [107.47, 21.53], [107.82, 21.68], [107.97, 22.03], [108.32, 22.18], [108.35, 22.25], [108.25, 22.5], [108.47, 23.03], [109.0, 23.25], [109.53, 23.03], [109.68, 22.68], [110.03, 22.53], [110.25, 22.0], [110.15, 21.75], [110.25, 21.5], [110.15, 21.25], [110.25, 21.0], [110.15, 20.75], [110.25, 20.5], [110.15, 20.25], [110.25, 20.0], [110.15, 19.75], [110.18, 19.68], [110.53, 19.53], [110.75, 19.0]]]]}}, "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": {"2023-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.47, 22.03], [109.0, 22.25], [109.53, 22.03], [109.75, 21.5], [109.53, 20.97], [109.0, 20.75], [108.47, 20.97], [108.25, 21.5], [108.47, 22.03]]]]}, "2023-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.5, 18.75], [107.97, 18.97], [107.75, 19.5], [107.97, 20.03], [108.5, 20.25], [109.03, 20.03], [109.25, 19.5], [109.03, 18.97], [108.5, 18.75]]], [[[108.25, 21.5], [108.47, 22.03], [109.0, 22.25], [109.53, 22.03], [109.68, 21.68], [110.03, 21.53], [110.25, 21.0], [110.03, 20.47], [109.5, 20.25], [108.97, 20.47], [108.82, 20.82], [108.47, 20.97], [108.25, 21.5]]]]}, "2023-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.47, 21.53], [107.82, 21.68], [107.97, 22.03], [108.32, 22.18], [108.35, 22.25], [108.25, 22.5], [108.47, 23.03], [109.0, 23.25], [109.53, 23.03], [109.68, 22.68], [110.03, 22.53], [110.25, 22.0], [110.15, 21.75], [110.25, 21.5], [110.15, 21.25], [110.25, 21.0], [110.15, 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over entire duration", "value": 2.9932753730218016}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.12905116717843, 25.094047848956222, 25.718157410053834, 26.23295442616171, 26.420773146780164, 25.929400554802157]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.12905116717843, 26.305934441295335, 28.735286920119734, 29.513709056245887, 29.581914083802644, 26.427966139248326]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.3317696672577313, 2.2433834512588455, 2.813978237883226, 3.1767383708843777, 3.2923390663402836, 2.0760800787939746]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.3317696672577313, 2.402126962366083, 5.0058677845463535, 5.022508153591502, 5.018509192816566, 2.8538635767503138]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.0917902820512242, 1.1748634251225643, 1.3465762709407134, 1.569172393169618, 1.6235960379059975, 1.2684139643876933]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.0917902820512242, 1.2737528686829298, 1.853145990264919, 2.3955238131815713, 2.267095124164654, 1.5335220436152603]}}