{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:25.452396", "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": "2026-Feb-04_to_2026-Feb-08_22.5_46.5"}, "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": 2026020001280}, "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": "February 04 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 08 2026"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 50132.69658225761}, "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": ["Romania", "Slovakia", "Ukraine"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe", "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": 46.5}, "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": 22.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[21.97, 47.03], [22.32, 47.18], [22.35, 47.25], [22.25, 47.5], [22.38, 47.8], [21.97, 47.97], [21.82, 48.32], [21.47, 48.47], [21.25, 49.0], [21.47, 49.53], [22.0, 49.75], [22.25, 49.65], [22.5, 49.75], [22.75, 49.65], [23.0, 49.75], [23.53, 49.53], [23.68, 49.18], [24.03, 49.03], [24.18, 48.68], [24.25, 48.65], [24.5, 48.75], [25.03, 48.53], [25.25, 48.0], [25.15, 47.75], [25.18, 47.68], [25.53, 47.53], [25.75, 47.0], [25.65, 46.75], [25.75, 46.5], [25.53, 45.97], [25.0, 45.75], [24.75, 45.85], [24.5, 45.75], [24.25, 45.85], [24.0, 45.75], [23.7, 45.88], [23.53, 45.47], [23.0, 45.25], [22.75, 45.35], [22.5, 45.25], [21.97, 45.47], [21.75, 46.0], [21.85, 46.25], [21.75, 46.5], [21.97, 47.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["West&Central-Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, 47.03], [22.5, 47.25], [23.03, 47.03], [23.25, 46.5], [23.03, 45.97], [22.5, 45.75], [21.97, 45.97], [21.75, 46.5], [21.97, 47.03]]]]}, "2026-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 48.47], [21.25, 49.0], [21.47, 49.53], [22.0, 49.75], [22.25, 49.65], [22.5, 49.75], [22.75, 49.65], [23.0, 49.75], [23.53, 49.53], [23.68, 49.18], [24.03, 49.03], [24.18, 48.68], [24.25, 48.65], [24.5, 48.75], [25.03, 48.53], [25.25, 48.0], [25.15, 47.75], [25.18, 47.68], [25.53, 47.53], [25.75, 47.0], [25.65, 46.75], [25.75, 46.5], [25.53, 45.97], [25.0, 45.75], [24.75, 45.85], [24.5, 45.75], [24.25, 45.85], [24.0, 45.75], [23.7, 45.88], [23.53, 45.47], [23.0, 45.25], [22.75, 45.35], [22.5, 45.25], [21.97, 45.47], [21.75, 46.0], [21.85, 46.25], [21.75, 46.5], [21.97, 47.03], [22.32, 47.18], [22.35, 47.25], [22.25, 47.5], [22.38, 47.8], [21.97, 47.97], [21.82, 48.32], [21.47, 48.47]]]]}, "2026-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 48.47], [21.25, 49.0], [21.47, 49.53], [22.0, 49.75], [22.25, 49.65], [22.5, 49.75], [22.75, 49.65], [23.0, 49.75], [23.53, 49.53], [23.68, 49.18], [24.03, 49.03], [24.18, 48.68], [24.25, 48.65], [24.5, 48.75], [25.03, 48.53], [25.25, 48.0], [25.15, 47.75], [25.18, 47.68], [25.53, 47.53], [25.75, 47.0], [25.65, 46.75], [25.75, 46.5], [25.53, 45.97], [25.0, 45.75], [24.75, 45.85], [24.5, 45.75], [24.25, 45.85], [24.0, 45.75], [23.7, 45.88], [23.53, 45.47], [23.0, 45.25], [22.75, 45.35], [22.5, 45.25], [21.97, 45.47], [21.75, 46.0], [21.85, 46.25], [21.75, 46.5], [21.97, 47.03], [22.32, 47.18], [22.35, 47.25], [22.25, 47.5], [22.38, 47.8], [21.97, 47.97], [21.82, 48.32], [21.47, 48.47]]]]}, "2026-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 48.47], [21.25, 49.0], [21.47, 49.53], [22.0, 49.75], [22.25, 49.65], [22.5, 49.75], [22.75, 49.65], [23.0, 49.75], [23.53, 49.53], [23.68, 49.18], [24.03, 49.03], [24.18, 48.68], [24.25, 48.65], [24.5, 48.75], [25.03, 48.53], [25.25, 48.0], [25.15, 47.75], [25.18, 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"max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.175668046070541}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.947052078215622}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.617864227294945, 5.528596496582054, 5.400040774875208, 4.450413852267843, 4.4022439744738335]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.617864227294945, 8.801555887858115, 8.421765899658226, 6.825990295410179, 5.64627609252932]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.361668470225766, 7.751088219230645, 7.309563315985476, 6.171896054826443, 5.857273309159287]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.361668470225766, 10.175668046070541, 8.34200760363376, 6.756699600710874, 6.184611538143656]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4214749062671326, 1.4946750740456405, 1.4584195781191085, 1.279554809339866, 1.1917433878444732]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4214749062671326, 1.9530507061188398, 1.597770024241219, 1.4255925833015899, 1.259758976104078]}}