{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:06.205986", "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-Mar-21_to_2022-Mar-26_35.5_51.5"}, "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": 2022030002360}, "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": "March 21 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 26 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": 72859.89963878551}, "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": ["Belarus", "Russian Federation", "Ukraine"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe", "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": 51.5}, "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": 35.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[35.75, 52.15], [36.0, 52.25], [36.25, 52.15], [36.5, 52.25], [37.03, 52.03], [37.25, 51.5], [37.15, 51.25], [37.25, 51.0], 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"IPCC regions", "description": "List of all IPCC regions affected", "value": ["West&Central-Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.75, 54.0], [28.85, 54.25], [28.75, 54.5], [28.97, 55.03], [29.32, 55.18], [29.47, 55.53], [30.0, 55.75], [30.25, 55.65], [30.5, 55.75], [31.03, 55.53], [31.25, 55.0], [31.15, 54.75], [31.25, 54.5], [31.15, 54.25], [31.18, 54.18], [31.53, 54.03], [31.68, 53.68], [32.0, 53.54], [32.5, 53.75], [32.75, 53.65], [33.0, 53.75], [33.25, 53.65], [33.5, 53.75], [33.75, 53.65], [34.0, 53.75], [34.53, 53.53], [34.75, 53.0], [34.65, 52.75], [34.68, 52.68], [34.75, 52.65], [35.0, 52.75], [35.53, 52.53], [35.75, 52.0], [35.53, 51.47], [35.18, 51.32], [35.03, 50.97], [34.5, 50.75], [34.25, 50.85], [34.0, 50.75], [33.75, 50.85], [33.5, 50.75], [32.97, 50.97], [32.8, 51.38], [32.5, 51.25], 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