{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:28.584994", "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": "2024-Aug-16_to_2024-Aug-20_157.0_54.0"}, "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": 2024080000453}, "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": "August 16 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 20 2024"}, "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": "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": 59132.852658930824}, "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": ["Russian Federation"]}, "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": 54.0}, "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": 157.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "157.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 156.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 158.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[157.03, 51.47], [156.5, 51.25], [155.97, 51.47], [155.75, 52.0], [155.85, 52.25], [155.75, 52.5], [155.96, 53.0], 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{"2024-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.97, 53.03], [156.5, 53.25], [157.03, 53.03], [157.25, 52.5], [157.03, 51.97], [156.5, 51.75], [155.97, 51.97], [155.75, 52.5], [155.97, 53.03]]]]}, "2024-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.75, 52.5], [155.97, 53.03], [156.5, 53.25], [157.03, 53.03], [157.25, 52.5], [157.15, 52.25], [157.25, 52.0], [157.03, 51.47], [156.5, 51.25], [155.97, 51.47], [155.75, 52.0], [155.85, 52.25], [155.75, 52.5]]]]}, "2024-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.75, 52.5], [155.96, 53.0], [155.75, 53.5], [155.85, 53.75], [155.75, 54.0], [155.85, 54.25], [155.75, 54.5], [155.85, 54.75], [155.75, 55.0], [155.85, 55.25], [155.75, 55.5], [155.85, 55.75], [155.75, 56.0], [155.97, 56.53], [156.5, 56.75], [156.75, 56.65], [157.0, 56.75], [157.25, 56.65], [157.32, 56.68], [157.47, 57.03], [158.0, 57.25], [158.25, 57.15], [158.5, 57.25], [159.03, 57.03], 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{"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.248998526228604, -1.8023094469976115, -3.3308912309683203, -3.699141154487782, -3.077006924593188]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.248998526228604, -1.803224443274928, -4.249448700262747, -5.284801802468962, -3.9420799345477917]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3390687937327772, -1.195855908182387, -1.663734780186139, -1.8728520378798343, -1.4982345959010215]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3390687937327772, -1.250741822045069, -2.118418708728586, -2.7242794604888614, -1.7550049106447767]}}