{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:08.824871", "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": "2022-Sep-09_to_2022-Sep-14_297.5_18.0"}, "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": 2022090001756}, "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": "September 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 14 2022"}, "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": 76714.94111374456}, "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": ["Bonaire, Sint Eustatius and Saba", "Sint Maarten (Dutch part)"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America"]}, "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": ["Atlantic Ocean", "Caribbean 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": 18.0}, "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": 297.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "297.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 302.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-59.0, 18.25], [-58.75, 18.15], [-58.5, 18.25], [-58.25, 18.15], [-58.0, 18.25], [-57.47, 18.03], [-57.25, 17.5], [-57.47, 16.97], [-58.0, 16.75], [-58.25, 16.85], [-58.32, 16.82], [-58.47, 16.47], [-58.82, 16.32], [-58.85, 16.25], [-58.75, 16.0], [-58.97, 15.47], [-59.5, 15.25], [-59.75, 15.35], [-60.0, 15.25], [-60.25, 15.35], [-60.5, 15.25], [-60.75, 15.35], [-61.0, 15.25], [-61.53, 15.47], [-61.75, 16.0], [-61.53, 16.53], [-61.0, 16.75], [-61.25, 16.85], [-61.5, 16.75], [-62.0, 16.96], [-62.5, 16.75], [-62.75, 16.85], [-63.0, 16.75], [-63.53, 16.97], [-63.75, 17.5], [-63.65, 17.75], [-63.75, 18.0], [-63.53, 18.53], [-63.18, 18.68], [-63.03, 19.03], [-62.5, 19.25], [-61.97, 19.03], [-61.82, 18.68], [-61.75, 18.65], [-61.5, 18.75], [-61.25, 18.65], [-61.0, 18.75], [-60.75, 18.65], [-60.5, 18.75], [-60.25, 18.65], [-60.0, 18.75], [-59.47, 18.53], [-59.32, 18.18], [-59.25, 18.15], [-59.0, 18.25]], [[-60.75, 16.65], [-60.68, 16.68], [-60.62, 16.8], [-60.75, 16.85], [-61.0, 16.75], [-60.75, 16.65]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.14999999999998, 16.75], [-60.25, 17.0], [-60.14999999999998, 17.25], [-60.25, 17.5], [-60.02999999999997, 18.03], [-59.5, 18.25], [-59.25, 18.15], [-59.0, 18.25], [-58.75, 18.15], [-58.5, 18.25], [-58.25, 18.15], [-58.0, 18.25], [-57.47000000000003, 18.03], [-57.25, 17.5], [-57.47000000000003, 16.97], [-58.0, 16.75], [-58.25, 16.85], [-58.31999999999999, 16.82], [-58.47000000000003, 16.47], [-58.81999999999999, 16.32], [-58.85000000000002, 16.25], [-58.75, 16.0], [-58.97000000000003, 15.47], [-59.5, 15.25], [-60.02999999999997, 15.47], [-60.25, 16.0], [-60.14999999999998, 16.25], [-60.25, 16.5], [-60.14999999999998, 16.75]]], [[[-62.5, 17.75], [-63.02999999999997, 17.97], [-63.25, 18.5], [-63.02999999999997, 19.03], [-62.5, 19.25], 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"description": "Mean t2m anomaly over entire duration", "value": 0.7531568046052636}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.0388727013235, 28.142457842978615, 28.149389421702097, 28.129404890344063, 28.289086995683988, 28.256385621943707]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.128536108810067, 28.34907924071223, 28.546759700666087, 28.386312735028184, 28.483642395608456, 28.416687427759655]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.7005907878648006, 0.7517392374839357, 0.7497753269360304, 0.7130643761724355, 0.84438773285157, 0.8176929283649391]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.7949376809713726, 0.919908714146402, 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