{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:52.105884", "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-Dec-27_to_2024-Jan-02_90.0_41.5"}, "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": 2023120002073}, "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": "December 27 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 02 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 71654.0977871191}, "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": 41.5}, "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": 90.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "90.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 88.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 92.0}, "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": 43.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[87.47, 42.03], [87.88, 42.2], [87.75, 42.5], [87.97, 43.03], [88.32, 43.18], [88.47, 43.53], [89.0, 43.75], [89.25, 43.65], [89.5, 43.75], [90.0, 43.54], [90.5, 43.75], [91.03, 43.53], [91.25, 43.0], [91.15, 42.75], [91.18, 42.68], [91.53, 42.53], [91.68, 42.18], [91.75, 42.15], [92.0, 42.25], [92.53, 42.03], [92.75, 41.5], [92.53, 40.97], [92.0, 40.75], [91.75, 40.85], [91.68, 40.82], [91.53, 40.47], [91.18, 40.32], [91.03, 39.97], [90.5, 39.75], [90.25, 39.85], [90.0, 39.75], [89.5, 39.96], [89.0, 39.75], [88.75, 39.85], [88.5, 39.75], [87.97, 39.97], [87.82, 40.32], [87.47, 40.47], [87.25, 41.0], [87.35, 41.25], [87.25, 41.5], [87.47, 42.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.47, 40.97], [87.25, 41.5], [87.47, 42.03], [88.0, 42.25], [88.25, 42.15], [88.5, 42.25], [89.03, 42.03], [89.25, 41.5], [89.03, 40.97], 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{"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.106296779203433}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.447737897163594}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-5.598644520075595, -5.206301286461439, -4.940504654005338, -3.7843336902857914, -4.746760326913602, -4.382680340826312, -4.943410210822435]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-5.417545163160582, -4.413300691280483, -3.8752279802822045, -0.2227711887016426, -1.3582766974223546, -2.0615482411992048, -4.943410210822435]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.8723907070134373, 4.202182091385656, 4.340338364393788, 5.107668556721814, 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