{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:39.389705", "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-Jan-10_to_2023-Jan-14_358.5_45.5"}, "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": 2023010002093}, "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": "January 10 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 14 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 98448.68707275721}, "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": ["France"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": 45.5}, "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": 358.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "358.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 356.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 362.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-2.25, 48.15], [-2.0, 48.25], [-1.47, 48.03], [-1.32, 47.68], [-1.25, 47.65], [-1.18, 47.68], [-1.03, 48.03], [-0.5, 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["West&Central-Europe", "Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.25, 47.5], [-3.0299999999999727, 48.03], [-2.5, 48.25], [-2.25, 48.15], [-2.0, 48.25], [-1.4700000000000273, 48.03], [-1.25, 47.5], [-1.3500000000000227, 47.25], [-1.25, 47.0], [-1.3700000000000045, 46.7], [-0.9700000000000273, 46.53], [-0.75, 46.0], [-0.8500000000000227, 45.75], [-0.75, 45.5], [-0.8500000000000227, 45.25], [-0.75, 45.0], [-0.8500000000000227, 44.75], [-0.75, 44.5], [-0.9700000000000273, 43.97], [-1.5, 43.75], [-2.0299999999999727, 43.97], [-2.180000000000007, 44.32], [-2.5299999999999727, 44.47], [-2.75, 45.0], [-2.6499999999999773, 45.25], [-2.75, 45.5], [-2.6499999999999773, 45.75], [-2.75, 46.0], [-2.6200000000000045, 46.3], [-3.0299999999999727, 46.47], [-3.25, 47.0], [-3.1499999999999773, 47.25], [-3.25, 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"description": "The daily evolution of mean t2m.", "value": [13.14854163869694, 12.313100881602566, 12.704426376745403, 12.426564526506809, 12.935223439746096]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.102359567713052, 13.854900702454017, 13.625333026930718, 13.571300196885716, 14.349171763463517]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.8997130900370753, 3.902336536716964, 3.6869977978718698, 3.336954101471363, 3.8908983606466934]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.703568034209184, 4.765395135155586, 5.185129641896708, 4.727025129867627, 5.187411015096416]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m 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