{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:32.062343", "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": "2021-Oct-02_to_2021-Oct-06_13.5_-76.0"}, "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": 2021100000117}, "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": "October 02 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 06 2021"}, "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": "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": 139639.39204563588}, "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": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": -76.0}, "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": 13.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 2.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -77.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -72.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.47, -74.03], [2.25, -73.5], [2.47, -72.97], [3.0, -72.75], [3.25, -72.85], [3.5, -72.75], [3.75, -72.85], [4.0, -72.75], [4.25, -72.85], [4.5, -72.75], [4.75, -72.85], [4.82, -72.82], [4.97, -72.47], [5.5, -72.25], [6.03, -72.47], [6.18, -72.82], [6.25, -72.85], [6.5, -72.75], [7.03, -72.97], [7.18, -73.32], [7.25, -73.35], [7.5, -73.25], [7.75, -73.35], [8.0, -73.25], [8.25, -73.35], [8.5, -73.25], [8.75, -73.35], [9.0, -73.25], [9.25, -73.35], [9.5, -73.25], [10.03, -73.47], [10.18, -73.82], [10.25, -73.85], [10.5, -73.75], [11.03, -73.97], [11.18, -74.32], [11.25, -74.35], [11.5, -74.25], [11.75, -74.35], [12.0, -74.25], [12.25, -74.35], [12.5, -74.25], [12.75, -74.35], [13.0, -74.25], [13.25, -74.35], [13.5, -74.25], [13.75, -74.35], [14.0, -74.25], [14.25, -74.35], [14.5, -74.25], [14.75, -74.35], [15.0, -74.25], [15.53, -74.47], [15.68, -74.82], [15.75, -74.85], [16.0, -74.75], [16.25, -74.85], [16.5, -74.75], [16.75, -74.85], [17.0, -74.75], [17.25, -74.85], [17.5, -74.75], [18.03, -74.97], [18.18, -75.32], [18.25, -75.35], [18.5, -75.25], [18.75, -75.35], [19.0, -75.25], [19.25, -75.35], [19.5, -75.25], [19.75, -75.35], [20.0, -75.25], [20.53, -75.47], [20.68, -75.82], [20.75, -75.85], [21.0, -75.75], [21.25, -75.85], [21.5, -75.75], [22.03, -75.97], [22.25, -76.5], [22.15, -76.75], [22.25, -77.0], [22.03, -77.53], [21.5, -77.75], [21.25, -77.65], [21.0, -77.75], [20.75, -77.65], [20.5, -77.75], [20.25, -77.65], [20.0, -77.75], [19.75, -77.65], [19.68, -77.68], [19.53, -78.03], [19.0, -78.25], [18.75, -78.15], [18.5, -78.25], [18.25, -78.15], [18.0, -78.25], [17.75, -78.15], [17.5, -78.25], [17.25, -78.15], [17.0, -78.25], [16.75, -78.15], [16.5, -78.25], [15.97, -78.03], [15.82, -77.68], [15.75, -77.65], [15.5, -77.75], [15.25, -77.65], [15.0, -77.75], [14.75, -77.65], [14.5, -77.75], [14.25, -77.65], [14.0, -77.75], [13.75, -77.65], [13.5, -77.75], [13.25, -77.65], [13.0, -77.75], [12.47, -77.53], [12.32, -77.18], [12.25, -77.15], [12.0, -77.25], [11.47, -77.03], [11.32, -76.68], [11.25, -76.65], [11.0, -76.75], [10.75, -76.65], [10.5, -76.75], [10.25, -76.65], [10.0, -76.75], [9.75, -76.65], [9.5, -76.75], [9.25, -76.65], [9.0, -76.75], [8.47, -76.53], [8.32, -76.18], [8.25, -76.15], [8.0, -76.25], [7.47, -76.03], [7.32, -75.68], [7.25, -75.65], [7.0, -75.75], [6.75, -75.65], [6.5, -75.75], [6.25, -75.65], [6.0, -75.75], [5.47, -75.53], [5.32, -75.18], [5.25, -75.15], [5.0, -75.25], [4.75, -75.15], [4.5, -75.25], [3.97, -75.03], [3.75, -74.5], [3.85, -74.25], [3.82, -74.18], [3.75, -74.15], [3.5, -74.25], [3.25, -74.15], [3.0, -74.25], [2.47, -74.03]]]]}, "2021-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.47, -74.03], [2.25, -73.5], [2.47, -72.97], [3.0, -72.75], [3.25, -72.85], [3.5, -72.75], [3.75, -72.85], [4.0, -72.75], [4.25, -72.85], [4.5, -72.75], [4.75, -72.85], [4.82, -72.82], [4.97, -72.47], [5.5, -72.25], [6.03, -72.47], [6.18, -72.82], [6.25, -72.85], [6.5, -72.75], [7.03, -72.97], [7.18, -73.32], [7.25, -73.35], [7.5, -73.25], [7.75, -73.35], [8.0, -73.25], [8.25, -73.35], [8.5, -73.25], [8.75, -73.35], [9.0, -73.25], [9.25, -73.35], [9.5, -73.25], [10.03, -73.47], [10.18, -73.82], [10.25, -73.85], [10.5, -73.75], [11.03, -73.97], [11.18, -74.32], [11.25, -74.35], [11.5, -74.25], [11.75, -74.35], [12.0, -74.25], [12.25, -74.35], [12.5, -74.25], [12.75, -74.35], [13.0, -74.25], [13.25, -74.35], [13.5, -74.25], [13.75, -74.35], [14.0, -74.25], [14.25, -74.35], [14.5, -74.25], [14.75, -74.35], [15.0, -74.25], [15.53, -74.47], [15.68, -74.82], [15.75, -74.85], [16.0, -74.75], [16.25, -74.85], [16.5, -74.75], [16.75, -74.85], [17.0, -74.75], [17.25, -74.85], [17.5, -74.75], [18.03, -74.97], [18.18, -75.32], [18.25, -75.35], [18.5, -75.25], [18.75, -75.35], [19.0, -75.25], [19.25, -75.35], [19.5, -75.25], [19.75, -75.35], [20.0, -75.25], [20.53, -75.47], [20.68, -75.82], [20.75, -75.85], [21.0, -75.75], [21.25, -75.85], [21.5, -75.75], [22.03, -75.97], [22.25, -76.5], [22.15, -76.75], [22.25, -77.0], [22.03, -77.53], [21.5, -77.75], [21.25, -77.65], [21.0, -77.75], [20.75, -77.65], [20.5, -77.75], [20.25, -77.65], [20.0, -77.75], [19.75, -77.65], [19.68, -77.68], [19.53, -78.03], [19.0, -78.25], [18.75, -78.15], [18.5, -78.25], [18.25, -78.15], [18.0, -78.25], [17.75, -78.15], [17.5, -78.25], [17.25, -78.15], [17.0, -78.25], [16.75, -78.15], [16.5, -78.25], [15.97, -78.03], [15.82, -77.68], [15.75, -77.65], [15.5, -77.75], [15.25, -77.65], [15.0, -77.75], [14.75, -77.65], [14.5, -77.75], [14.25, -77.65], [14.0, -77.75], [13.75, -77.65], [13.5, -77.75], [13.25, -77.65], [13.0, -77.75], [12.47, -77.53], [12.32, -77.18], [12.25, -77.15], [12.0, -77.25], [11.47, -77.03], [11.32, -76.68], [11.25, -76.65], [11.0, -76.75], [10.75, -76.65], [10.5, -76.75], [10.25, -76.65], [10.0, -76.75], [9.75, -76.65], [9.5, -76.75], [9.25, -76.65], [9.0, -76.75], [8.47, -76.53], [8.32, -76.18], [8.25, -76.15], [8.0, -76.25], [7.75, -76.15], [7.5, -76.25], [7.25, -76.15], [7.0, -76.25], [6.47, -76.03], [6.32, -75.68], [6.25, -75.65], [6.0, -75.75], [5.47, -75.53], [5.32, -75.18], [5.25, -75.15], [5.0, -75.25], [4.75, -75.15], [4.5, -75.25], [3.97, -75.03], [3.75, -74.5], [3.85, -74.25], [3.82, -74.18], [3.75, -74.15], [3.5, -74.25], [3.25, -74.15], [3.0, -74.25], [2.47, -74.03]]]]}, "2021-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.47, -74.03], [2.25, -73.5], [2.47, -72.97], [3.0, -72.75], [3.25, -72.85], [3.5, -72.75], [3.75, -72.85], [4.0, -72.75], [4.25, -72.85], [4.5, -72.75], [4.75, -72.85], [4.82, -72.82], [4.97, -72.47], [5.5, -72.25], [6.03, -72.47], [6.18, -72.82], [6.25, -72.85], [6.5, -72.75], [7.03, -72.97], [7.18, -73.32], [7.25, -73.35], [7.5, -73.25], [7.75, -73.35], [8.0, -73.25], [8.25, -73.35], [8.5, -73.25], [8.75, -73.35], [9.0, -73.25], [9.25, -73.35], [9.5, -73.25], [9.75, -73.35], [10.0, -73.25], [10.25, -73.35], [10.5, -73.25], [10.75, -73.35], [11.0, -73.25], [11.25, -73.35], [11.5, -73.25], [11.75, -73.35], [11.82, -73.32], [11.97, -72.97], [12.5, -72.75], [12.75, -72.85], [13.0, -72.75], [13.25, -72.85], [13.5, -72.75], [13.75, -72.85], [14.0, -72.75], [14.25, -72.85], [14.5, -72.75], [14.75, -72.85], [15.0, -72.75], [15.25, -72.85], [15.5, -72.75], [16.03, -72.97], [16.18, -73.32], [16.25, -73.35], [16.5, -73.25], [17.03, -73.47], [17.18, -73.82], [17.53, -73.97], [17.75, -74.5], [17.63, -74.8], [18.03, -74.97], [18.18, -75.32], [18.25, -75.35], [18.5, -75.25], [18.75, -75.35], [19.0, -75.25], [19.25, -75.35], [19.5, -75.25], [19.75, -75.35], [20.0, -75.25], [20.53, -75.47], [20.68, -75.82], [20.75, -75.85], [21.0, -75.75], [21.25, -75.85], [21.5, -75.75], [22.03, -75.97], [22.25, -76.5], [22.15, -76.75], [22.25, -77.0], [22.03, -77.53], [21.5, -77.75], [21.25, -77.65], [21.0, -77.75], [20.75, -77.65], [20.5, -77.75], [20.25, -77.65], [20.0, -77.75], [19.75, -77.65], [19.68, -77.68], [19.53, -78.03], [19.0, -78.25], [18.75, -78.15], [18.5, -78.25], [18.25, -78.15], [18.0, -78.25], [17.75, -78.15], [17.5, -78.25], [17.25, -78.15], [17.0, -78.25], [16.75, -78.15], [16.5, -78.25], [15.97, -78.03], [15.82, -77.68], [15.75, -77.65], [15.5, -77.75], [15.25, -77.65], [15.0, -77.75], [14.75, -77.65], [14.5, -77.75], [14.25, -77.65], [14.0, -77.75], [13.75, -77.65], [13.5, -77.75], [13.25, -77.65], [13.0, -77.75], [12.47, -77.53], [12.32, -77.18], [12.25, -77.15], [12.0, -77.25], [11.47, -77.03], [11.32, -76.68], [11.25, -76.65], [11.0, -76.75], [10.75, -76.65], [10.5, -76.75], [10.25, -76.65], [10.0, -76.75], [9.75, -76.65], [9.5, -76.75], [9.25, -76.65], [9.0, -76.75], [8.47, -76.53], [8.32, -76.18], [8.25, -76.15], [8.0, -76.25], [7.75, -76.15], [7.5, -76.25], [7.25, -76.15], [7.0, -76.25], [6.47, -76.03], [6.32, -75.68], [6.25, -75.65], [6.0, -75.75], [5.47, -75.53], [5.32, -75.18], [5.25, -75.15], [5.0, -75.25], [4.75, -75.15], [4.5, -75.25], [3.97, -75.03], [3.75, -74.5], [3.85, -74.25], [3.82, -74.18], [3.75, -74.15], [3.5, -74.25], [3.25, -74.15], [3.0, -74.25], [2.47, -74.03]]]]}, "2021-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, -74.47], [7.0, -74.25], [7.25, -74.35], [7.5, -74.25], [7.75, -74.35], [7.82, -74.32], [7.97, -73.97], [8.5, -73.75], [8.75, -73.85], [8.82, -73.82], [8.97, -73.47], [9.5, -73.25], [9.75, -73.35], [10.0, -73.25], [10.25, -73.35], [10.5, -73.25], [10.75, -73.35], [11.0, -73.25], [11.25, -73.35], [11.5, -73.25], [11.75, -73.35], [11.82, -73.32], [11.97, -72.97], [12.5, -72.75], [12.75, -72.85], [13.0, -72.75], [13.25, -72.85], [13.5, -72.75], [13.75, -72.85], [14.0, -72.75], [14.25, -72.85], [14.5, -72.75], [14.75, -72.85], [15.0, -72.75], [15.25, -72.85], [15.5, -72.75], [16.03, -72.97], [16.18, -73.32], [16.25, -73.35], [16.5, -73.25], [17.03, -73.47], [17.18, -73.82], [17.53, -73.97], [17.75, -74.5], [17.63, -74.8], [18.03, -74.97], [18.18, -75.32], [18.25, -75.35], [18.5, -75.25], [18.75, -75.35], [19.0, -75.25], [19.25, -75.35], [19.5, -75.25], [19.75, -75.35], [20.0, -75.25], [20.53, -75.47], [20.68, -75.82], [20.75, -75.85], [21.0, -75.75], [21.25, -75.85], [21.5, -75.75], [22.03, -75.97], [22.25, -76.5], [22.15, -76.75], [22.25, -77.0], [22.03, -77.53], [21.5, -77.75], [21.25, -77.65], [21.0, -77.75], [20.75, -77.65], [20.5, -77.75], [20.25, -77.65], [20.0, -77.75], [19.75, -77.65], [19.68, -77.68], [19.53, -78.03], [19.0, -78.25], [18.75, -78.15], [18.5, -78.25], [18.25, -78.15], [18.0, -78.25], [17.75, -78.15], [17.5, -78.25], [17.25, -78.15], [17.0, -78.25], [16.75, -78.15], [16.5, -78.25], [15.97, -78.03], [15.82, -77.68], [15.75, -77.65], [15.5, -77.75], [15.25, -77.65], [15.0, -77.75], [14.75, -77.65], [14.5, -77.75], [14.25, -77.65], [14.0, -77.75], [13.75, -77.65], [13.5, -77.75], [13.25, -77.65], [13.0, -77.75], [12.47, -77.53], [12.32, -77.18], [12.25, -77.15], [12.0, -77.25], [11.47, -77.03], [11.32, -76.68], [11.25, -76.65], [11.0, -76.75], [10.75, -76.65], [10.5, -76.75], [10.25, -76.65], [10.0, -76.75], [9.75, -76.65], [9.5, -76.75], [9.25, -76.65], [9.0, -76.75], [8.47, -76.53], [8.32, -76.18], [8.25, -76.15], [8.0, -76.25], [7.75, -76.15], [7.5, -76.25], [7.25, -76.15], [7.0, -76.25], [6.47, -76.03], [6.25, -75.5], [6.35, -75.25], [6.25, -75.0], [6.47, -74.47]]]]}, "2021-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, -74.47], [7.0, -74.25], [7.25, -74.35], [7.5, -74.25], [7.75, -74.35], [7.82, -74.32], [7.97, -73.97], [8.5, -73.75], [8.75, -73.85], [8.82, -73.82], [8.97, -73.47], [9.5, -73.25], [9.75, -73.35], [10.0, -73.25], [10.25, -73.35], [10.5, -73.25], [10.75, -73.35], [11.0, -73.25], [11.25, -73.35], [11.5, -73.25], [11.75, -73.35], [11.82, -73.32], [11.97, -72.97], [12.5, -72.75], [12.75, -72.85], [13.0, -72.75], [13.25, -72.85], [13.5, -72.75], [13.75, -72.85], [14.0, -72.75], [14.25, -72.85], [14.5, -72.75], [14.75, -72.85], [15.0, -72.75], [15.25, -72.85], [15.5, -72.75], [16.03, -72.97], [16.18, -73.32], [16.25, -73.35], [16.5, -73.25], [17.03, -73.47], [17.18, -73.82], [17.53, -73.97], [17.75, -74.5], [17.53, -75.03], [17.18, -75.18], [17.13, -75.3], [17.53, -75.47], [17.68, -75.82], [18.03, -75.97], [18.25, -76.5], [18.15, -76.75], [18.25, -77.0], [18.03, -77.53], [17.5, -77.75], [17.25, -77.65], [17.18, -77.68], [17.03, -78.03], [16.5, -78.25], [15.97, -78.03], [15.82, -77.68], [15.75, -77.65], [15.5, -77.75], [15.25, -77.65], [15.0, -77.75], [14.75, -77.65], [14.5, -77.75], [14.25, -77.65], [14.0, -77.75], [13.75, -77.65], [13.5, -77.75], [13.25, -77.65], [13.0, -77.75], [12.47, -77.53], [12.32, -77.18], [12.25, -77.15], [12.0, -77.25], [11.47, -77.03], [11.32, -76.68], [11.25, -76.65], [11.0, -76.75], [10.75, -76.65], [10.5, -76.75], [10.25, -76.65], [10.0, -76.75], [9.75, -76.65], [9.5, -76.75], [9.25, -76.65], [9.0, -76.75], [8.47, -76.53], [8.32, -76.18], [8.25, -76.15], [8.0, -76.25], [7.75, -76.15], [7.5, -76.25], [7.25, -76.15], [7.0, -76.25], [6.47, -76.03], [6.25, -75.5], [6.35, -75.25], [6.25, -75.0], [6.47, -74.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.648477982540697}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.176373638243106}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-56.32675358102412, -56.38421717914255, -55.65213680756605, -56.849973260507994, -55.43685504492419]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-61.04383381992332, -61.25546514531587, -60.34444841813672, -61.92667321862379, -57.94930015699285]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.934695315106765, -8.252267522437466, -8.112342629601269, -8.515913555266728, -8.03938474031266]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.867341613304148, -10.648477982540697, -9.453836428308875, -10.14595727584566, -9.112524133620468]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4291890121267026, -1.463160589754089, -1.4440916314349812, -1.5091677282548566, -1.436725537970579]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5521475003135305, -1.83784933631838, -1.7029526551034315, -1.7415271988539105, -1.6185703679270198]}}