{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:59.131034", "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": "2012-Dec-09_to_2012-Dec-15_19.0_42.5"}, "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": 2012120000436}, "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": "December 09 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 15 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 271200.8543439404}, "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": ["Albania", "Bosnia and Herzegovina", "Bulgaria", "Croatia", "Greece", "Hungary", "Montenegro", "North Macedonia", "Romania", "Serbia"]}, "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": ["Adriatic 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": 42.5}, "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": 19.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, 43.75], [18.25, 43.65], [18.32, 43.68], [18.47, 44.03], [19.0, 44.25], [18.75, 44.35], [18.5, 44.25], [17.97, 44.47], [17.75, 45.0], [17.85, 45.25], [17.75, 45.5], [17.85, 45.75], [17.75, 46.0], [17.97, 46.53], [18.5, 46.75], [18.75, 46.65], [19.0, 46.75], [19.25, 46.65], [19.32, 46.68], [19.47, 47.03], [20.0, 47.25], [20.25, 47.15], [20.5, 47.25], [20.75, 47.15], [21.0, 47.25], [21.25, 47.15], [21.5, 47.25], [22.03, 47.03], [22.25, 46.5], [22.15, 46.25], [22.25, 46.0], [22.15, 45.75], [22.25, 45.5], [22.03, 44.97], [21.68, 44.82], [21.65, 44.75], [21.75, 44.5], [21.53, 43.97], [21.18, 43.82], [21.15, 43.75], [21.18, 43.68], [21.5, 43.54], [22.0, 43.75], [22.53, 43.53], [22.75, 43.0], [22.53, 42.47], [22.0, 42.25], [21.5, 42.46], [21.18, 42.32], [21.03, 41.97], [20.5, 41.75], [20.0, 41.96], [19.5, 41.75], [19.25, 41.85], [19.18, 41.82], [19.03, 41.47], [18.5, 41.25], [17.97, 41.47], [17.82, 41.82], [17.75, 41.85], [17.5, 41.75], [16.97, 41.97], [16.75, 42.5], [16.97, 43.03], [17.32, 43.18], [17.47, 43.53], [18.0, 43.75]], [[19.43, 44.07], [19.32, 44.32], [19.25, 44.35], [19.0, 44.25], [19.43, 44.07]], [[19.75, 43.65], [19.82, 43.68], [19.85, 43.75], [19.82, 43.82], [19.57, 43.93], [19.68, 43.68], [19.75, 43.65]]]]}, "2012-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, 43.75], [18.25, 43.65], [18.32, 43.68], [18.47, 44.03], [19.0, 44.25], [18.75, 44.35], [18.5, 44.25], [17.97, 44.47], [17.75, 45.0], [17.85, 45.25], [17.75, 45.5], [17.85, 45.75], [17.75, 46.0], [17.97, 46.53], [18.5, 46.75], [18.75, 46.65], [19.0, 46.75], [19.25, 46.65], [19.32, 46.68], [19.47, 47.03], [20.0, 47.25], [20.25, 47.15], [20.5, 47.25], [20.75, 47.15], [21.0, 47.25], [21.25, 47.15], [21.5, 47.25], [22.03, 47.03], [22.25, 46.5], [22.15, 46.25], [22.25, 46.0], [22.15, 45.75], [22.25, 45.5], [22.03, 44.97], [21.68, 44.82], [21.65, 44.75], [21.75, 44.5], [21.53, 43.97], [21.18, 43.82], [21.15, 43.75], [21.18, 43.68], [21.25, 43.65], [21.5, 43.75], [21.75, 43.65], [22.0, 43.75], [22.25, 43.65], [22.5, 43.75], [23.03, 43.53], [23.2, 43.13], [23.5, 43.25], [24.03, 43.03], [24.25, 42.5], [24.03, 41.97], [23.5, 41.75], [22.97, 41.97], [22.8, 42.38], [22.68, 42.32], [22.53, 41.97], [22.0, 41.75], [21.75, 41.85], [21.5, 41.75], [21.25, 41.85], [21.0, 41.75], [20.75, 41.85], [20.68, 41.82], [20.53, 41.47], [20.0, 41.25], [19.75, 41.35], [19.5, 41.25], [19.0, 41.46], [18.5, 41.25], [17.97, 41.47], [17.82, 41.82], [17.75, 41.85], [17.5, 41.75], [16.97, 41.97], [16.75, 42.5], [16.97, 43.03], [17.32, 43.18], [17.47, 43.53], [18.0, 43.75]], [[19.43, 44.07], [19.32, 44.32], [19.25, 44.35], [19.0, 44.25], [19.43, 44.07]], [[19.75, 43.65], [19.82, 43.68], [19.85, 43.75], [19.82, 43.82], [19.57, 43.93], [19.68, 43.68], [19.75, 43.65]]]]}, "2012-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, 43.75], [18.25, 43.65], [18.32, 43.68], [18.47, 44.03], [19.0, 44.25], [18.75, 44.35], [18.5, 44.25], [17.97, 44.47], [17.75, 45.0], [17.85, 45.25], [17.75, 45.5], [17.85, 45.75], [17.75, 46.0], [17.97, 46.53], [18.5, 46.75], [18.75, 46.65], [19.0, 46.75], [19.25, 46.65], [19.32, 46.68], [19.47, 47.03], [20.0, 47.25], [20.25, 47.15], [20.5, 47.25], [20.75, 47.15], [21.0, 47.25], [21.25, 47.15], [21.5, 47.25], [22.03, 47.03], [22.25, 46.5], [22.15, 46.25], [22.25, 46.0], [22.15, 45.75], [22.25, 45.5], [22.03, 44.97], [21.68, 44.82], [21.65, 44.75], [21.75, 44.5], [21.53, 43.97], [21.18, 43.82], [21.15, 43.75], [21.18, 43.68], [21.25, 43.65], [21.5, 43.75], [21.75, 43.65], [22.0, 43.75], [22.25, 43.65], [22.5, 43.75], [23.03, 43.53], [23.2, 43.13], [23.5, 43.25], [24.03, 43.03], [24.25, 42.5], [24.03, 41.97], [23.5, 41.75], [22.97, 41.97], [22.8, 42.38], [22.68, 42.32], [22.53, 41.97], [22.18, 41.82], [22.03, 41.47], [21.5, 41.25], [20.97, 41.47], [20.82, 41.82], [20.75, 41.85], [20.68, 41.82], [20.53, 41.47], [20.0, 41.25], [19.75, 41.35], [19.5, 41.25], [19.25, 41.35], [19.0, 41.25], [18.75, 41.35], [18.5, 41.25], [17.97, 41.47], [17.82, 41.82], [17.75, 41.85], [17.5, 41.75], [16.97, 41.97], [16.75, 42.5], [16.97, 43.03], [17.32, 43.18], [17.47, 43.53], [18.0, 43.75]], [[19.43, 44.07], [19.32, 44.32], [19.25, 44.35], [19.0, 44.25], [19.43, 44.07]], [[19.82, 43.68], [19.85, 43.75], [19.82, 43.82], [19.57, 43.93], [19.68, 43.68], [19.75, 43.65], [19.82, 43.68]]]]}, "2012-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.25, 43.65], [18.32, 43.68], [18.47, 44.03], [19.0, 44.25], [19.53, 44.03], [19.68, 43.68], [19.75, 43.65], [19.82, 43.68], [19.97, 44.03], [20.5, 44.25], [21.03, 44.03], [21.18, 43.68], [21.25, 43.65], [21.5, 43.75], [21.75, 43.65], [22.0, 43.75], [22.25, 43.65], [22.5, 43.75], [22.75, 43.65], [23.0, 43.75], [23.53, 43.53], [23.68, 43.18], [24.03, 43.03], [24.25, 42.5], [24.15, 42.25], [24.18, 42.18], [24.25, 42.15], [24.5, 42.25], [25.03, 42.03], [25.25, 41.5], [25.03, 40.97], [24.5, 40.75], [24.25, 40.85], [24.0, 40.75], [23.75, 40.85], [23.5, 40.75], [23.2, 40.88], [23.03, 40.47], [22.68, 40.32], [22.53, 39.97], [22.18, 39.82], [22.15, 39.75], [22.25, 39.5], [22.03, 38.97], [21.5, 38.75], [20.97, 38.97], [20.82, 39.32], [20.47, 39.47], [20.25, 40.0], [20.35, 40.25], [20.32, 40.32], [19.97, 40.47], [19.82, 40.82], [19.47, 40.97], [19.32, 41.32], [19.25, 41.35], [19.0, 41.25], [18.75, 41.35], [18.5, 41.25], [17.97, 41.47], [17.82, 41.82], [17.75, 41.85], [17.5, 41.75], [16.97, 41.97], [16.75, 42.5], [16.97, 43.03], [17.32, 43.18], [17.47, 43.53], [18.0, 43.75], [18.25, 43.65]]], [[[17.97, 44.47], [17.75, 45.0], [17.85, 45.25], [17.75, 45.5], [17.85, 45.75], [17.75, 46.0], [17.97, 46.53], [18.5, 46.75], [18.75, 46.65], [19.0, 46.75], [19.25, 46.65], [19.5, 46.75], [19.75, 46.65], [20.0, 46.75], [20.53, 46.53], [20.75, 46.0], [20.53, 45.47], [20.18, 45.32], [20.15, 45.25], [20.25, 45.0], [20.03, 44.47], [19.5, 44.25], [19.25, 44.35], [19.0, 44.25], [18.75, 44.35], [18.5, 44.25], [17.97, 44.47]]]]}, "2012-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, 43.75], [18.25, 43.65], [18.32, 43.68], [18.47, 44.03], [19.0, 44.25], [19.53, 44.03], [19.68, 43.68], [19.75, 43.65], [19.82, 43.68], [19.97, 44.03], [20.5, 44.25], [21.03, 44.03], [21.18, 43.68], [21.25, 43.65], [21.38, 43.7], [21.25, 44.0], [21.35, 44.25], [21.25, 44.5], [21.47, 45.03], [22.0, 45.25], [22.25, 45.15], [22.5, 45.25], [22.75, 45.15], [23.0, 45.25], [23.25, 45.15], [23.5, 45.25], [23.75, 45.15], [23.82, 45.18], [23.97, 45.53], [24.5, 45.75], [24.75, 45.65], [25.0, 45.75], [25.25, 45.65], [25.5, 45.75], [25.75, 45.65], [26.0, 45.75], [26.25, 45.65], [26.32, 45.68], [26.47, 46.03], [27.0, 46.25], [27.25, 46.15], [27.5, 46.25], [27.75, 46.15], [28.0, 46.25], [28.53, 46.03], [28.75, 45.5], [28.65, 45.25], [28.75, 45.0], [28.53, 44.47], [28.0, 44.25], [27.75, 44.35], [27.68, 44.32], [27.53, 43.97], [27.18, 43.82], [27.03, 43.47], [26.5, 43.25], [26.25, 43.35], [26.0, 43.25], [25.75, 43.35], [25.5, 43.25], [25.25, 43.35], [25.18, 43.32], [25.03, 42.97], [24.5, 42.75], [24.07, 42.93], [24.25, 42.5], [24.15, 42.25], [24.18, 42.18], [24.25, 42.15], [24.5, 42.25], [25.03, 42.03], [25.25, 41.5], [25.03, 40.97], [24.5, 40.75], [24.25, 40.85], [24.18, 40.82], [24.15, 40.75], [24.25, 40.5], [24.03, 39.97], [23.5, 39.75], [22.97, 39.97], [22.82, 40.32], [22.75, 40.35], [22.68, 40.32], [22.53, 39.97], [22.18, 39.82], [22.15, 39.75], [22.25, 39.5], [22.03, 38.97], [21.5, 38.75], [20.97, 38.97], [20.82, 39.32], [20.47, 39.47], [20.25, 40.0], [20.35, 40.25], [20.32, 40.32], [19.97, 40.47], [19.82, 40.82], [19.47, 40.97], [19.32, 41.32], [19.25, 41.35], [19.0, 41.25], [18.75, 41.35], [18.5, 41.25], [17.97, 41.47], [17.82, 41.82], [17.47, 41.97], [17.25, 42.5], [17.35, 42.75], [17.25, 43.0], [17.47, 43.53], [18.0, 43.75]]], [[[17.97, 44.47], [17.75, 45.0], [17.85, 45.25], [17.75, 45.5], [17.85, 45.75], [17.75, 46.0], [17.97, 46.53], [18.5, 46.75], [18.75, 46.65], [19.0, 46.75], [19.25, 46.65], [19.5, 46.75], [19.75, 46.65], [20.0, 46.75], [20.53, 46.53], [20.75, 46.0], [20.53, 45.47], [20.18, 45.32], [20.15, 45.25], [20.25, 45.0], [20.03, 44.47], [19.5, 44.25], [19.25, 44.35], [19.0, 44.25], [18.75, 44.35], [18.5, 44.25], [17.97, 44.47]]]]}, "2012-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.25, 42.5], [18.47, 43.03], [19.0, 43.25], [19.25, 43.15], [19.5, 43.25], [19.75, 43.15], [19.82, 43.18], [19.97, 43.53], [20.5, 43.75], [20.75, 43.65], [21.0, 43.75], [21.25, 43.65], [21.38, 43.7], [21.25, 44.0], [21.35, 44.25], [21.25, 44.5], [21.47, 45.03], [22.0, 45.25], [22.25, 45.15], [22.5, 45.25], [22.75, 45.15], [23.0, 45.25], [23.25, 45.15], [23.5, 45.25], [23.75, 45.15], [23.82, 45.18], [23.97, 45.53], [24.5, 45.75], [24.75, 45.65], [25.0, 45.75], [25.25, 45.65], [25.5, 45.75], [25.75, 45.65], [26.0, 45.75], [26.25, 45.65], [26.32, 45.68], [26.47, 46.03], [27.0, 46.25], [27.25, 46.15], [27.5, 46.25], [27.75, 46.15], [28.0, 46.25], [28.53, 46.03], [28.75, 45.5], [28.65, 45.25], [28.75, 45.0], [28.53, 44.47], [28.0, 44.25], [27.75, 44.35], [27.68, 44.32], [27.53, 43.97], [27.18, 43.82], [27.03, 43.47], [26.5, 43.25], [26.25, 43.35], [26.0, 43.25], [25.75, 43.35], [25.5, 43.25], [25.25, 43.35], [25.18, 43.32], [25.03, 42.97], [24.5, 42.75], [24.07, 42.93], [24.25, 42.5], [24.15, 42.25], [24.18, 42.18], [24.25, 42.15], [24.5, 42.25], [25.03, 42.03], [25.25, 41.5], [25.03, 40.97], [24.5, 40.75], [24.25, 40.85], [24.18, 40.82], [24.15, 40.75], [24.25, 40.5], [24.03, 39.97], [23.5, 39.75], [22.97, 39.97], [22.82, 40.32], [22.75, 40.35], [22.68, 40.32], [22.53, 39.97], [22.18, 39.82], [22.15, 39.75], [22.25, 39.5], [22.03, 38.97], [21.5, 38.75], [20.97, 38.97], [20.82, 39.32], [20.47, 39.47], [20.25, 40.0], [20.35, 40.25], [20.32, 40.32], [19.97, 40.47], [19.82, 40.82], [19.47, 40.97], [19.32, 41.32], [18.97, 41.47], [18.82, 41.82], [18.47, 41.97], [18.25, 42.5]]]]}, "2012-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.5, 42.75], [22.0, 42.54], [22.5, 42.75], [23.03, 42.53], [23.2, 42.13], [23.5, 42.25], [23.75, 42.15], [24.0, 42.25], [24.25, 42.15], [24.5, 42.25], [25.03, 42.03], [25.25, 41.5], [25.03, 40.97], [24.5, 40.75], [24.25, 40.85], [24.18, 40.82], [24.15, 40.75], [24.25, 40.5], [24.03, 39.97], [23.5, 39.75], [22.97, 39.97], [22.82, 40.32], [22.75, 40.35], [22.5, 40.25], [21.97, 40.47], [21.8, 40.88], [21.5, 40.75], [20.97, 40.97], [20.75, 41.5], [20.85, 41.75], [20.75, 42.0], [20.97, 42.53], [21.5, 42.75]]], [[[22.0, 45.25], [22.25, 45.15], [22.5, 45.25], [22.75, 45.15], [23.0, 45.25], [23.25, 45.15], [23.5, 45.25], [23.75, 45.15], [23.82, 45.18], [23.97, 45.53], [24.5, 45.75], [24.75, 45.65], [25.0, 45.75], [25.25, 45.65], [25.5, 45.75], [25.75, 45.65], [26.0, 45.75], [26.25, 45.65], [26.32, 45.68], [26.47, 46.03], [27.0, 46.25], [27.25, 46.15], [27.5, 46.25], [27.75, 46.15], [28.0, 46.25], [28.53, 46.03], [28.75, 45.5], [28.65, 45.25], [28.75, 45.0], [28.53, 44.47], [28.0, 44.25], [27.75, 44.35], [27.68, 44.32], [27.53, 43.97], [27.18, 43.82], [27.03, 43.47], [26.5, 43.25], [26.25, 43.35], [26.0, 43.25], [25.75, 43.35], [25.5, 43.25], [25.25, 43.35], [25.18, 43.32], [25.03, 42.97], [24.5, 42.75], [24.0, 42.96], [23.5, 42.75], [23.25, 42.85], [23.0, 42.75], [22.47, 42.97], [22.32, 43.32], [22.25, 43.35], [22.0, 43.25], [21.47, 43.47], [21.25, 44.0], [21.35, 44.25], [21.25, 44.5], [21.47, 45.03], [22.0, 45.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -14.21568135203745}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.156351385211822}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-3.7137716846088438, -6.312509079574511, -4.046681855358429, -5.378696994709685, -7.394138388572287, -8.171708284795443, -5.996952031051478]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-9.186246384531898, -11.08406835457879, -7.646221975239484, -11.05584691480044, -14.783941022553392, -14.163348767624996, -9.724898667034438]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.550082477051411, -8.817567977280616, -6.634430292456641, -7.519793456921488, -9.144735610546812, -9.460988502324666, -7.090954472583131]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.751093341962246, -12.899286638642366, -8.257950559536368, -10.580136803595394, -14.21568135203745, -13.993307273610128, -10.946092133505942]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6817831039539952, -2.223458395466329, -1.7030939683671245, -2.0081086436076636, -2.346146215266472, -2.3782171493685706, -1.7502000739035852]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.354630017685466, -3.0113526367005683, -2.137340359075955, -3.124681121263428, -3.6681198559329493, -3.3124667066516094, -2.464088522428166]}}