{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:37.213525", "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-Jul-15_to_2022-Jul-17_22.0_61.0"}, "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": 2022070000724}, "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": "July 15 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 17 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 59514.51811187636}, "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": ["Finland"]}, "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": 61.0}, "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": 22.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 60.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[20.75, 62.0], [20.97, 62.53], [21.32, 62.68], [21.47, 63.03], [22.0, 63.25], [22.25, 63.15], [22.5, 63.25], [22.75, 63.15], [23.0, 63.25], [23.53, 63.03], [23.68, 62.68], [23.75, 62.65], [24.0, 62.75], [24.53, 62.53], [24.68, 62.18], [24.75, 62.15], [25.0, 62.25], [25.25, 62.15], [25.5, 62.25], [25.75, 62.15], [26.0, 62.25], [26.53, 62.03], [26.68, 61.68], [27.03, 61.53], [27.25, 61.0], [27.03, 60.47], [26.68, 60.32], [26.53, 59.97], [26.0, 59.75], [25.75, 59.85], [25.5, 59.75], [25.25, 59.85], [25.0, 59.75], [24.75, 59.85], [24.5, 59.75], [24.25, 59.85], [24.18, 59.82], [24.03, 59.47], [23.5, 59.25], [22.97, 59.47], [22.82, 59.82], [22.75, 59.85], [22.5, 59.75], [22.25, 59.85], [22.0, 59.75], [21.75, 59.85], [21.5, 59.75], [20.97, 59.97], [20.75, 60.5], [20.85, 60.75], [20.75, 61.0], [20.96, 61.5], [20.75, 62.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.75, 61.0], [20.96, 61.5], [20.75, 62.0], [20.97, 62.53], [21.32, 62.68], [21.47, 63.03], [22.0, 63.25], [22.25, 63.15], [22.5, 63.25], [22.75, 63.15], [23.0, 63.25], [23.53, 63.03], [23.68, 62.68], [23.75, 62.65], [24.0, 62.75], [24.53, 62.53], [24.68, 62.18], [24.75, 62.15], [25.0, 62.25], [25.25, 62.15], [25.5, 62.25], [25.75, 62.15], [26.0, 62.25], [26.53, 62.03], [26.68, 61.68], [27.03, 61.53], [27.25, 61.0], [27.03, 60.47], [26.68, 60.32], [26.53, 59.97], [26.0, 59.75], [25.75, 59.85], [25.5, 59.75], [25.25, 59.85], [25.0, 59.75], [24.75, 59.85], [24.5, 59.75], [24.25, 59.85], [24.18, 59.82], [24.03, 59.47], [23.5, 59.25], [22.97, 59.47], [22.82, 59.82], [22.75, 59.85], [22.5, 59.75], [22.25, 59.85], [22.0, 59.75], [21.75, 59.85], [21.5, 59.75], [20.97, 59.97], [20.75, 60.5], [20.85, 60.75], [20.75, 61.0]]]]}, "2022-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.75, 61.0], [20.96, 61.5], [20.75, 62.0], [20.97, 62.53], [21.32, 62.68], [21.47, 63.03], [22.0, 63.25], [22.25, 63.15], [22.5, 63.25], [22.75, 63.15], [23.0, 63.25], [23.53, 63.03], [23.68, 62.68], [23.75, 62.65], [24.0, 62.75], [24.53, 62.53], [24.68, 62.18], [24.75, 62.15], [25.0, 62.25], [25.25, 62.15], [25.5, 62.25], [25.75, 62.15], [26.0, 62.25], [26.53, 62.03], [26.68, 61.68], [27.03, 61.53], [27.25, 61.0], [27.03, 60.47], [26.68, 60.32], [26.53, 59.97], [26.0, 59.75], [25.75, 59.85], [25.5, 59.75], [25.25, 59.85], [25.0, 59.75], [24.75, 59.85], [24.5, 59.75], [24.25, 59.85], [24.18, 59.82], [24.03, 59.47], [23.5, 59.25], [22.97, 59.47], [22.82, 59.82], [22.75, 59.85], [22.5, 59.75], [22.25, 59.85], [22.0, 59.75], [21.75, 59.85], [21.5, 59.75], [20.97, 59.97], [20.75, 60.5], [20.85, 60.75], [20.75, 61.0]]]]}, "2022-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.75, 61.0], [20.96, 61.5], [20.75, 62.0], [20.97, 62.53], [21.32, 62.68], [21.47, 63.03], [22.0, 63.25], [22.25, 63.15], [22.5, 63.25], [22.75, 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"Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.242820338265346, 12.663746237143755, 12.825768436573696]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.322002392835714, 11.686722696927802, 11.526770655366647]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.95897201721658, -4.501544401348333, -4.274526988197797]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.695993765996036, -5.090392372637439, -4.926035742777174]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3744992698433303, -1.5575620173212135, -1.514792564486081]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6059000713901408, -1.701006446148924, -1.6793400303292436]}}