{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:40.768265", "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-26_to_2022-Jul-29_7.5_56.5"}, "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": 2022070001153}, "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 26 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 29 2022"}, "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": 74249.37864892502}, "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": ["Denmark"]}, "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": ["North Sea"]}, "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": 56.5}, "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": 7.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "7.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 3.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 9.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[5.82, 55.82], [5.75, 55.85], [5.5, 55.75], [4.97, 55.97], [4.82, 56.32], [4.75, 56.35], [4.5, 56.25], [3.97, 56.47], [3.82, 56.82], [3.47, 56.97], [3.32, 57.32], [3.25, 57.35], [3.0, 57.25], [2.47, 57.47], [2.25, 58.0], [2.47, 58.53], [3.0, 58.75], [3.25, 58.65], [3.5, 58.75], [3.75, 58.65], [4.0, 58.75], [4.25, 58.65], [4.5, 58.75], [4.8, 58.63], [4.97, 59.03], [5.5, 59.25], [6.03, 59.03], [6.25, 58.5], [6.15, 58.25], [6.18, 58.18], [6.25, 58.15], [6.5, 58.25], [6.75, 58.15], [7.0, 58.25], [7.25, 58.15], [7.5, 58.25], [7.75, 58.15], [8.0, 58.25], [8.25, 58.15], [8.5, 58.25], [9.03, 58.03], [9.18, 57.68], [9.53, 57.53], [9.75, 57.0], [9.65, 56.75], [9.68, 56.68], [10.03, 56.53], [10.25, 56.0], [10.03, 55.47], [9.5, 55.25], [9.25, 55.35], [9.18, 55.32], [9.03, 54.97], [8.5, 54.75], [8.0, 54.96], [7.5, 54.75], [7.25, 54.85], [7.0, 54.75], [6.47, 54.97], [6.32, 55.32], [5.97, 55.47], [5.82, 55.82]]]]}}, "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": {"2022-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[3.0, 57.25], [2.47, 57.47], [2.25, 58.0], [2.47, 58.53], [3.0, 58.75], [3.25, 58.65], [3.5, 58.75], [3.75, 58.65], [4.0, 58.75], [4.25, 58.65], [4.5, 58.75], [4.8, 58.63], [4.97, 59.03], [5.5, 59.25], [6.03, 59.03], [6.25, 58.5], [6.15, 58.25], [6.18, 58.18], [6.25, 58.15], [6.5, 58.25], [6.75, 58.15], [7.0, 58.25], [7.25, 58.15], [7.5, 58.25], [7.75, 58.15], [8.0, 58.25], [8.25, 58.15], [8.5, 58.25], [9.03, 58.03], [9.18, 57.68], [9.53, 57.53], [9.75, 57.0], [9.65, 56.75], [9.68, 56.68], [10.03, 56.53], [10.25, 56.0], [10.03, 55.47], [9.5, 55.25], [9.25, 55.35], [9.18, 55.32], [9.03, 54.97], [8.5, 54.75], [8.0, 54.96], [7.5, 54.75], [7.25, 54.85], [7.0, 54.75], [6.47, 54.97], [6.32, 55.32], [5.97, 55.47], [5.82, 55.82], [5.75, 55.85], [5.5, 55.75], [4.97, 55.97], [4.82, 56.32], [4.75, 56.35], [4.5, 56.25], [3.97, 56.47], [3.82, 56.82], [3.47, 56.97], [3.32, 57.32], [3.25, 57.35], [3.0, 57.25]]]]}, "2022-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[3.0, 57.25], [2.47, 57.47], [2.25, 58.0], [2.47, 58.53], [3.0, 58.75], [3.25, 58.65], [3.5, 58.75], [3.75, 58.65], [4.0, 58.75], [4.25, 58.65], [4.5, 58.75], [4.8, 58.63], [4.97, 59.03], [5.5, 59.25], [6.03, 59.03], [6.25, 58.5], [6.15, 58.25], [6.18, 58.18], [6.25, 58.15], [6.5, 58.25], [6.75, 58.15], [7.0, 58.25], [7.25, 58.15], [7.5, 58.25], [7.75, 58.15], [8.0, 58.25], [8.25, 58.15], [8.5, 58.25], [9.03, 58.03], [9.18, 57.68], [9.53, 57.53], [9.75, 57.0], [9.65, 56.75], [9.68, 56.68], [10.03, 56.53], [10.25, 56.0], [10.03, 55.47], [9.5, 55.25], [9.25, 55.35], [9.18, 55.32], [9.03, 54.97], [8.5, 54.75], [8.0, 54.96], [7.5, 54.75], [7.25, 54.85], [7.0, 54.75], [6.47, 54.97], [6.32, 55.32], [5.97, 55.47], [5.82, 55.82], [5.75, 55.85], [5.5, 55.75], [4.97, 55.97], [4.82, 56.32], [4.75, 56.35], [4.5, 56.25], [3.97, 56.47], [3.82, 56.82], [3.47, 56.97], [3.32, 57.32], [3.25, 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13.552748370317204, 13.551814740880786, 13.993097797948963]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.56532680793083, 12.540986279867127, 12.943777543273029, 13.536926291934435]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.599317370800387, -2.784069617106606, -2.802182757821082, -2.3223840062435164]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6535543716094594, -4.111603306113466, -4.326089617718196, -2.463518457011901]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.337823653071167, -1.389091801155333, -1.3654123213954446, -1.2387722777845587]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4997180823862457, -1.5526753563098588, -1.6553115118047124, -1.280820249399443]}}