{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:46.949124", "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-Jul-25_to_2024-Jul-30_46.5_41.0"}, "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": 2024070000713}, "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 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 30 2024"}, "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": "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": 51530.96635952365}, "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": ["Armenia", "Azerbaijan", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": ["Caspian 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": 41.0}, "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": 46.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 45.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[44.97, 41.53], [45.5, 41.75], [45.75, 41.65], [46.0, 41.75], [46.25, 41.65], [46.5, 41.75], [46.75, 41.65], [47.0, 41.75], 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"value": {"2024-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.97, 41.53], [46.5, 41.75], [47.03, 41.53], [47.25, 41.0], [47.03, 40.47], [46.5, 40.25], [45.97, 40.47], [45.75, 41.0], [45.97, 41.53]]]]}, "2024-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.0, 40.25], [45.47, 40.47], [45.25, 41.0], [45.47, 41.53], [46.0, 41.75], [46.25, 41.65], [46.5, 41.75], [47.03, 41.53], [47.25, 41.0], [47.03, 40.47], [46.5, 40.25], [46.25, 40.35], [46.0, 40.25]]]]}, "2024-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.47, 40.47], [45.25, 41.0], [45.47, 41.53], [46.0, 41.75], [46.25, 41.65], [46.5, 41.75], [47.03, 41.53], [47.25, 41.0], [47.03, 40.47], [46.5, 40.25], [46.25, 40.35], [46.0, 40.25], [45.47, 40.47]]], [[[46.75, 42.5], [46.97, 43.03], [47.5, 43.25], [48.03, 43.03], [48.18, 42.68], [48.53, 42.53], [48.68, 42.18], [49.03, 42.03], [49.18, 41.68], [49.25, 41.65], [49.5, 41.75], [50.03, 41.53], [50.25, 41.0], 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"value": -7.90545694553947}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.541891949713573}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.96577421612352, 23.527705941419413, 21.05765534316646, 19.373637931499616, 20.096634953521175, 21.97635594721487]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.96577421612352, 22.77361886493344, 14.202746312020736, 12.527307593482874, 13.430823534006038, 15.845386492177056]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.455843783096952, -4.831614028208406, -3.3847318757428764, -5.398179125399798, -4.743179521457464, -3.693331978932192]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum 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