{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:19.153455", "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": "2020-May-11_to_2020-May-14_358.5_52.5"}, "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": 2020050000284}, "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": "May 11 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 14 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 70259.63759407279}, "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": ["United Kingdom"]}, "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": 52.5}, "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": 361.0}, "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": 53.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-4.03, 53.53], [-3.5, 53.75], [-3.0, 53.543], [-2.677, 53.677], [-2.53, 54.03], [-2.0, 54.25], [-1.47, 54.03], [-1.323, 53.677], [-1.25, 53.646], [-1.0, 53.75], [-0.75, 53.646], [-0.5, 53.75], [0.03, 53.53], [0.177, 53.177], [0.53, 53.03], [0.677, 52.677], [1.03, 52.53], [1.25, 52.0], [1.146, 51.75], [1.177, 51.677], [1.53, 51.53], [1.75, 51.0], [1.53, 50.47], [1.0, 50.25], [0.75, 50.354], [0.5, 50.25], [0.25, 50.354], [0.0, 50.25], [-0.25, 50.354], [-0.5, 50.25], [-1.03, 50.47], [-1.177, 50.823], [-1.25, 50.854], [-1.5, 50.75], [-1.75, 50.854], [-2.0, 50.75], [-2.25, 50.854], [-2.5, 50.75], [-2.75, 50.854], [-3.0, 50.75], [-3.53, 50.97], [-3.677, 51.323], [-3.75, 51.354], [-4.0, 51.25], [-4.53, 51.47], [-4.75, 52.0], [-4.53, 52.53], [-4.177, 52.677], [-4.146, 52.75], [-4.25, 53.0], [-4.03, 53.53]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe", "West&Central-Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-11T11:30:00.000000000": 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