{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:53.301491", "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": "2013-Nov-19_to_2013-Nov-27_14.5_-12.0"}, "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": 2013110000860}, "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": "November 19 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 27 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 358340.3323569984}, "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": ["Angola", "Zambia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "W.Southern-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": ["South Atlantic Ocean"]}, "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": -12.0}, "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": 14.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "14.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 12.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.0, -10.25], [14.53, -10.47], [14.75, -11.0], [14.53, -11.53], [14.0, -11.75], [13.47, -11.53], [13.25, -11.0], [13.47, -10.47], [14.0, -10.25]]]]}, "2013-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.47, -10.47], [14.0, -10.25], [14.53, -10.47], [14.75, -11.0], [14.63, -11.3], [15.03, -11.47], [15.25, -12.0], [15.03, -12.53], [14.5, -12.75], [14.0, -12.54], [13.5, -12.75], [12.97, -12.53], [12.75, -12.0], [12.97, -11.47], [13.38, -11.3], [13.25, -11.0], [13.47, -10.47]]]]}, "2013-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.47, -10.47], [14.0, -10.25], [14.53, -10.47], [14.75, -11.0], [14.63, -11.3], [15.03, -11.47], [15.25, -12.0], [15.03, -12.53], [14.5, -12.75], [14.0, -12.54], [13.5, -12.75], [12.97, -12.53], [12.75, -12.0], [12.97, -11.47], [13.38, -11.3], [13.25, -11.0], [13.47, -10.47]]]]}, "2013-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.47, -10.47], [18.0, -10.25], [18.53, -10.47], [18.75, -11.0], [18.65, -11.25], [18.75, -11.5], [18.65, -11.75], [18.7, -11.87], [18.82, -11.82], [18.97, -11.47], [19.5, -11.25], [19.75, -11.35], [20.0, -11.25], [20.5, -11.46], [21.0, -11.25], [21.25, -11.35], [21.5, -11.25], [22.03, -11.47], [22.18, -11.82], [22.53, -11.97], [22.75, -12.5], [22.54, -13.0], [22.75, -13.5], [22.65, -13.75], [22.75, -14.0], [22.65, -14.25], [22.75, -14.5], [22.53, -15.03], [22.0, -15.25], [21.75, -15.15], [21.5, -15.25], [21.25, -15.15], [21.0, -15.25], [20.75, -15.15], [20.5, -15.25], [20.25, -15.15], [20.18, -15.18], [20.03, -15.53], [19.5, -15.75], [19.25, -15.65], [19.0, -15.75], [18.47, -15.53], [18.32, -15.18], [18.25, -15.15], [18.0, -15.25], [17.47, -15.03], [17.25, -14.5], [17.35, -14.25], [17.25, -14.0], [17.47, -13.47], [18.0, -13.25], [18.25, -13.35], [18.32, -13.32], [18.35, -13.25], [18.25, -13.0], [18.35, -12.75], [18.3, -12.62], [18.0, -12.75], [17.75, -12.65], [17.5, -12.75], [16.97, -12.53], [16.75, -12.0], [16.97, -11.47], [17.32, -11.32], [17.35, -11.25], [17.25, -11.0], [17.47, -10.47]]], [[[15.25, -12.0], [15.03, -12.53], [14.5, -12.75], [14.0, -12.54], [13.5, -12.75], [12.97, -12.53], [12.75, -12.0], [12.97, -11.47], [13.5, -11.25], [14.0, -11.46], [14.5, -11.25], [15.03, -11.47], [15.25, -12.0]]], [[[13.0, -8.75], [13.53, -8.97], [13.75, -9.5], [13.63, -9.8], [14.03, -9.97], [14.25, -10.5], [14.03, -11.03], [13.5, -11.25], [12.97, -11.03], [12.75, -10.5], [12.88, -10.2], [12.47, -10.03], [12.25, -9.5], [12.47, -8.97], [13.0, -8.75]]]]}, "2013-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.82, -11.82], [12.85, -11.75], [12.75, -11.5], [12.96, -11.0], [12.82, -10.68], [12.47, -10.53], [12.25, -10.0], [12.35, -9.75], [12.25, -9.5], [12.47, -8.97], [13.0, -8.75], [13.53, -8.97], [13.75, -9.5], [13.65, -9.75], [13.68, -9.82], [14.0, -9.96], [14.5, -9.75], [14.75, -9.85], [15.0, -9.75], [15.53, -9.97], [15.68, -10.32], [15.75, -10.35], [16.0, -10.25], [16.25, -10.35], [16.32, -10.32], [16.47, -9.97], [17.0, -9.75], [17.25, -9.85], [17.5, -9.75], [18.03, -9.97], [18.18, -10.32], [18.53, -10.47], [18.75, -11.0], [18.65, -11.25], [18.75, -11.5], [18.65, -11.75], [18.7, -11.87], [18.82, -11.82], [18.97, -11.47], [19.5, -11.25], [19.75, -11.35], [20.0, -11.25], [20.25, -11.35], [20.5, -11.25], [20.75, -11.35], [21.0, -11.25], [21.25, -11.35], [21.5, -11.25], [22.03, -11.47], [22.18, -11.82], [22.53, -11.97], [22.75, -12.5], [22.54, -13.0], [22.75, -13.5], [22.65, -13.75], [22.75, -14.0], [22.65, -14.25], [22.75, -14.5], [22.53, -15.03], [22.0, -15.25], [21.75, -15.15], [21.5, -15.25], [21.25, -15.15], [21.0, -15.25], [21.53, -15.47], [21.75, -16.0], [21.53, -16.53], [21.0, -16.75], [20.75, -16.65], [20.5, -16.75], [20.25, -16.65], [20.0, -16.75], [19.47, -16.53], [19.32, -16.18], [18.97, -16.03], [18.82, -15.68], [18.47, -15.53], [18.32, -15.18], [18.25, -15.15], [18.0, -15.25], [17.47, -15.03], [17.25, -14.5], [17.35, -14.25], [17.25, -14.0], [17.35, -13.75], [17.32, -13.68], [16.97, -13.53], [16.75, -13.0], [16.93, -12.57], [16.68, -12.68], [16.53, -13.03], [16.0, -13.25], [15.47, -13.03], [15.32, -12.68], [15.25, -12.65], [15.0, -12.75], [14.75, -12.65], [14.63, -12.7], [14.75, -13.0], [14.65, -13.25], [14.75, -13.5], [14.53, -14.03], [14.0, -14.25], [13.47, -14.03], [13.25, -13.5], [13.35, -13.25], [13.3, -13.12], [13.18, -13.18], [13.03, -13.53], [12.5, -13.75], [11.97, -13.53], [11.75, -13.0], [11.97, -12.47], [12.32, -12.32], [12.47, -11.97], [12.82, -11.82]], [[20.75, -15.15], [20.5, -15.25], [20.75, -15.35], [21.0, -15.25], [20.75, -15.15]], [[20.25, -15.15], [20.18, -15.18], [20.15, -15.25], [20.18, -15.32], [20.25, -15.35], [20.5, -15.25], [20.25, -15.15]]]]}, "2013-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.75, -13.0], [11.97, -12.47], [12.32, -12.32], [12.47, -11.97], [12.82, -11.82], [12.85, -11.75], [12.75, -11.5], [12.96, -11.0], [12.82, -10.68], [12.47, -10.53], [12.25, -10.0], [12.35, -9.75], [12.25, -9.5], [12.47, -8.97], [13.0, -8.75], [13.53, -8.97], [13.75, -9.5], [13.65, -9.75], [13.68, -9.82], [14.0, -9.96], [14.5, -9.75], [14.75, -9.85], [15.0, -9.75], [15.53, -9.97], [15.68, -10.32], [15.75, -10.35], [16.0, -10.25], [16.25, -10.35], [16.32, -10.32], [16.47, -9.97], [17.0, -9.75], [17.25, -9.85], [17.5, -9.75], [18.03, -9.97], [18.18, -10.32], [18.53, -10.47], [18.75, -11.0], [18.65, -11.25], [18.75, -11.5], [18.65, -11.75], [18.7, -11.87], [18.82, -11.82], [18.97, -11.47], [19.5, -11.25], [19.75, -11.35], [20.0, -11.25], [20.25, -11.35], [20.5, -11.25], [20.75, -11.35], [21.0, -11.25], [21.25, -11.35], [21.5, -11.25], [22.03, -11.47], [22.18, -11.82], [22.53, -11.97], [22.75, -12.5], [22.54, -13.0], [22.75, -13.5], [22.65, -13.75], [22.75, -14.0], [22.65, -14.25], [22.75, -14.5], [22.53, -15.03], [22.0, -15.25], [21.75, -15.15], [21.5, -15.25], [21.25, -15.15], [21.0, -15.25], [21.53, -15.47], [21.75, -16.0], [21.53, -16.53], [21.0, -16.75], [20.75, -16.65], [20.5, -16.75], [20.25, -16.65], [20.0, -16.75], [19.47, -16.53], [19.32, -16.18], [18.97, -16.03], [18.82, -15.68], [18.47, -15.53], [18.32, -15.18], [18.25, -15.15], [18.0, -15.25], [17.7, -15.12], [17.53, -15.53], [17.0, -15.75], [16.75, -15.65], [16.5, -15.75], [15.97, -15.53], [15.75, -15.0], [15.85, -14.75], [15.75, -14.5], [15.85, -14.25], [15.75, -14.0], [15.85, -13.75], [15.75, -13.5], [15.85, -13.25], [15.82, -13.18], [15.75, -13.15], [15.68, -13.18], [15.53, -13.53], [15.0, -13.75], [14.75, -13.65], [14.68, -13.68], [14.65, -13.75], [14.75, -14.0], [14.53, -14.53], [14.18, -14.68], [14.03, -15.03], [13.5, -15.25], [12.97, -15.03], [12.82, -14.68], [12.47, -14.53], [12.25, -14.0], [12.35, -13.75], [12.32, -13.68], [11.97, -13.53], [11.75, -13.0]], [[20.75, -15.15], [20.5, -15.25], [20.75, -15.35], [21.0, -15.25], [20.75, -15.15]], [[20.25, -15.15], [20.18, -15.18], [20.15, -15.25], [20.18, -15.32], [20.25, -15.35], [20.5, -15.25], [20.25, -15.15]]]]}, "2013-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.75, -14.5], [11.97, -13.97], [12.32, -13.82], [12.35, -13.75], [12.32, -13.68], [11.97, -13.53], [11.75, -13.0], [11.97, -12.47], [12.32, -12.32], [12.47, -11.97], [12.82, -11.82], [12.85, -11.75], [12.75, -11.5], [12.96, -11.0], [12.82, -10.68], [12.47, -10.53], [12.25, -10.0], [12.35, -9.75], [12.25, -9.5], [12.47, -8.97], [13.0, -8.75], [13.53, -8.97], [13.75, -9.5], [13.65, -9.75], [13.68, -9.82], [14.0, -9.96], [14.5, -9.75], [14.75, -9.85], [15.0, -9.75], [15.53, -9.97], [15.68, -10.32], [15.75, -10.35], [16.0, -10.25], [16.25, -10.35], [16.32, -10.32], [16.47, -9.97], [17.0, -9.75], [17.25, -9.85], [17.5, -9.75], [18.03, -9.97], [18.18, -10.32], [18.53, -10.47], [18.75, -11.0], [18.65, -11.25], [18.75, -11.5], [18.65, -11.75], [18.7, -11.87], [18.82, -11.82], [18.97, -11.47], [19.5, -11.25], [19.75, -11.35], [20.0, -11.25], [20.25, -11.35], [20.5, -11.25], [20.75, -11.35], [21.0, -11.25], [21.25, -11.35], [21.5, -11.25], [22.03, -11.47], [22.18, -11.82], [22.53, -11.97], [22.75, -12.5], [22.54, -13.0], [22.75, -13.5], [22.65, -13.75], [22.75, -14.0], [22.65, -14.25], [22.75, -14.5], [22.53, -15.03], [22.0, -15.25], [21.75, -15.15], [21.5, -15.25], [21.25, -15.15], [21.0, -15.25], [21.53, -15.47], [21.75, -16.0], [21.53, -16.53], [21.0, -16.75], [20.75, -16.65], [20.5, -16.75], [20.25, -16.65], [20.0, -16.75], [19.47, -16.53], [19.32, -16.18], [18.97, -16.03], [18.82, -15.68], [18.47, -15.53], [18.32, -15.18], [18.25, -15.15], [18.0, -15.25], [17.7, -15.12], [17.53, -15.53], [17.0, -15.75], [16.75, -15.65], [16.5, -15.75], [15.97, -15.53], [15.75, -15.0], [15.85, -14.75], [15.75, -14.5], [15.85, -14.25], [15.75, -14.0], [15.85, -13.75], [15.75, -13.5], [15.85, -13.25], [15.82, -13.18], [15.75, -13.15], [15.68, -13.18], [15.53, -13.53], [15.0, -13.75], [14.75, -13.65], [14.68, -13.68], [14.65, -13.75], [14.75, -14.0], [14.53, -14.53], [14.18, -14.68], [14.03, -15.03], [13.68, -15.18], [13.65, -15.25], [13.75, -15.5], [13.53, -16.03], [13.0, -16.25], [12.47, -16.03], [12.25, -15.5], [12.35, -15.25], [12.32, -15.18], [11.97, -15.03], [11.75, -14.5]], [[20.75, -15.15], [20.5, -15.25], [20.75, -15.35], [21.0, -15.25], [20.75, -15.15]], [[20.25, -15.15], [20.18, -15.18], [20.15, -15.25], [20.18, -15.32], [20.25, -15.35], [20.5, -15.25], [20.25, -15.15]]]]}, "2013-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, -13.97], [12.32, -13.82], [12.35, -13.75], [12.25, -13.5], [12.47, -12.97], [12.82, -12.82], [12.97, -12.47], [13.32, -12.32], [13.47, -11.97], [13.82, -11.82], [13.85, -11.75], [13.75, -11.5], [13.97, -10.97], [14.32, -10.82], [14.47, -10.47], [15.0, -10.25], [15.25, -10.35], [15.5, -10.25], [15.75, -10.35], [16.0, -10.25], [16.25, -10.35], [16.32, -10.32], [16.47, -9.97], [17.0, -9.75], [17.53, -9.97], [17.75, -10.5], [17.54, -11.0], [17.75, -11.5], [17.53, -12.03], [17.18, -12.18], [17.07, -12.43], [17.5, -12.25], [17.75, -12.35], [18.0, -12.25], [18.25, -12.35], [18.32, -12.32], [18.47, -11.97], [18.82, -11.82], [18.97, -11.47], [19.5, -11.25], [19.75, -11.35], [20.0, -11.25], [20.25, -11.35], [20.5, -11.25], [20.75, -11.35], [21.0, -11.25], [21.25, -11.35], [21.5, -11.25], [22.03, -11.47], [22.25, -12.0], [22.15, -12.25], [22.25, -12.5], [22.15, -12.75], [22.25, -13.0], [22.03, -13.53], [21.5, -13.75], [20.97, -13.53], [20.8, -13.12], [20.5, -13.25], [20.2, -13.12], [20.03, -13.53], [19.5, -13.75], [19.25, -13.65], [19.0, -13.75], [18.75, -13.65], [18.5, -13.75], [18.25, -13.65], [18.18, -13.68], [18.03, -14.03], [17.68, -14.18], [17.65, -14.25], [17.75, -14.5], [17.65, -14.75], [17.75, -15.0], [17.53, -15.53], [17.0, -15.75], [16.75, -15.65], [16.5, -15.75], [15.97, -15.53], [15.75, -15.0], [15.85, -14.75], [15.75, -14.5], [15.85, -14.25], [15.75, -14.0], [15.85, -13.75], [15.75, -13.5], [15.85, -13.25], [15.82, -13.18], [15.75, -13.15], [15.68, -13.18], [15.53, -13.53], [15.0, -13.75], [14.75, -13.65], [14.68, -13.68], [14.65, -13.75], [14.75, -14.0], [14.53, -14.53], [14.18, -14.68], [14.03, -15.03], [13.68, -15.18], [13.65, -15.25], [13.75, -15.5], [13.53, -16.03], [13.0, -16.25], [12.47, -16.03], [12.25, -15.5], [12.35, -15.25], [12.32, -15.18], [11.97, -15.03], [11.75, -14.5], [11.97, -13.97]]], [[[12.47, -10.03], [12.25, -9.5], [12.47, -8.97], [13.0, -8.75], [13.53, -8.97], [13.75, -9.5], [13.53, -10.03], [13.0, -10.25], [12.47, -10.03]]]]}, "2013-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.75, -14.5], [11.97, -13.97], [12.32, -13.82], [12.35, -13.75], [12.25, -13.5], [12.47, -12.97], [12.82, -12.82], [12.97, -12.47], [13.5, -12.25], [13.93, -12.43], [13.75, -12.0], [13.97, -11.47], [14.5, -11.25], [14.75, -11.35], [15.0, -11.25], [15.25, -11.35], [15.5, -11.25], [16.03, -11.47], [16.25, -12.0], [16.03, -12.53], [15.5, -12.75], [15.25, -12.65], [15.0, -12.75], [14.75, -12.65], [14.5, -12.75], [14.07, -12.57], [14.25, -13.0], [14.03, -13.53], [13.68, -13.68], [13.65, -13.75], [13.75, -14.0], [13.65, -14.25], [13.75, -14.5], [13.65, -14.75], [13.75, -15.0], [13.65, -15.25], [13.75, -15.5], [13.53, -16.03], [13.0, -16.25], [12.47, -16.03], [12.25, -15.5], [12.35, -15.25], [12.32, -15.18], [11.97, -15.03], [11.75, -14.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.8898763737250874}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.903960839346172}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.768548529033865, 22.182473785436798, 22.305058455239475, 20.082156062557317, 19.980961281443342, 19.722805177474186, 19.262743004843685, 19.18162519602214, 21.479137048507994]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.768548529033865, 19.8775809545931, 19.505244961319136, 18.55298918397881, 16.935947312708663, 17.163187150230158, 16.483459804563722, 16.126330685279527, 17.305295055635213]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.230477888319058, -1.3754126958059487, -1.25510703611216, -1.8437137850439838, -1.6838819152151483, -1.7834615494778028, -2.2938721479156152, -1.8729515602316675, -1.5723855466417036]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.230477888319058, -1.8927839743416257, -1.3447872670191714, -2.5229621955014068, -2.4056219978535296, -3.5724155272095004, -3.8898763737250874, -3.0910030816139624, -2.621487860037462]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7000713171147408, -1.7621725236509225, -1.6116244407173437, -1.5161558264542736, -1.5931401651020212, -1.6945152774699044, -2.129014454513995, -1.8865152462003858, -1.5402553960680254]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7000713171147408, -2.614877092199306, -1.7084098532546634, -1.7735451828800488, -2.5918872933943784, -2.9289441442663007, -3.4265156402585633, -2.9507266211841463, -2.1503607837369643]}}