{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:04.262511", "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": "2015-Jan-07_to_2015-Jan-09_28.5_45.5"}, "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": 2015010000463}, "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": "January 07 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 2015"}, "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": 53965.32310262115}, "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": ["Moldova", "Romania", "Ukraine"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "West&Central-Europe"]}, "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": 45.5}, "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": 28.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 31.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, 43.97], [25.75, 44.5], [25.97, 45.03], [26.5, 45.25], 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46.18], [27.47, 46.53], [28.0, 46.75], [28.25, 46.65], [28.32, 46.68], [28.47, 47.03], [29.0, 47.25], [29.25, 47.15], [29.5, 47.25], [29.75, 47.15], [29.82, 47.18], [29.97, 47.53], [30.5, 47.75], [30.75, 47.65], [30.82, 47.68], [30.97, 48.03], [31.5, 48.25], [32.03, 48.03], [32.25, 47.5], [32.03, 46.97], [31.68, 46.82], [31.53, 46.47], [31.18, 46.32], [31.03, 45.97], [30.68, 45.82], [30.53, 45.47], [30.18, 45.32], [30.03, 44.97], [29.5, 44.75], [29.25, 44.85], [29.18, 44.82], [29.15, 44.75], [29.25, 44.5], [29.03, 43.97], [28.5, 43.75], [28.25, 43.85], [28.0, 43.75], [27.75, 43.85], [27.5, 43.75], [27.25, 43.85], [27.0, 43.75], [26.75, 43.85], [26.5, 43.75], [25.97, 43.97]]]]}, "2015-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, 43.97], [25.75, 44.5], [25.97, 45.03], [26.5, 45.25], [26.75, 45.15], [26.82, 45.18], [26.85, 45.25], [26.75, 45.5], [26.97, 46.03], [27.32, 46.18], [27.47, 46.53], [28.0, 46.75], [28.25, 46.65], [28.32, 46.68], [28.47, 47.03], 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[-12.430193951437786, -15.518743616187635, -7.630384788879269]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-16.320229607495037, -20.833623504324322, -9.387315582551935]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-11.543838555255604, -14.873174995139575, -7.169465702964496]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-14.053032816033635, -18.82060982709558, -8.346501047327195]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.3815727308483083, -3.1289926742113447, -1.5209653828106187]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.667372115294725, -3.6617449069455694, -1.7417193414102605]}}