{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:57.642114", "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": "2018-Jun-27_to_2018-Jul-01_20.5_14.0"}, "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": 2018060001148}, "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": "June 27 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 01 2018"}, "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": 72001.0258640835}, "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": ["Chad", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "Sahara"]}, "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": []}, "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": 14.0}, "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": 20.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.97, 14.53], [20.5, 14.75], [20.75, 14.65], [21.0, 14.75], [21.25, 14.65], [21.5, 14.75], [22.03, 14.53], [22.25, 14.0], [22.15, 13.75], [22.25, 13.5], [22.15, 13.25], [22.25, 13.0], [22.03, 12.47], [21.5, 12.25], [21.25, 12.35], [21.0, 12.25], [20.47, 12.47], [20.32, 12.82], [19.97, 12.97], [19.75, 13.5], [19.85, 13.75], [19.75, 14.0], [19.97, 14.53]]]]}, "2018-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, 14.03], [19.82, 14.18], [19.85, 14.25], [19.75, 14.5], [19.97, 15.03], [20.5, 15.25], [20.75, 15.15], [20.82, 15.18], [20.85, 15.25], [20.75, 15.5], [20.97, 16.03], [21.5, 16.25], [21.75, 16.15], [22.0, 16.25], [22.53, 16.03], [22.75, 15.5], [22.65, 15.25], [22.75, 15.0], [22.65, 14.75], [22.68, 14.68], [23.03, 14.53], [23.25, 14.0], [23.03, 13.47], [22.5, 13.25], [22.25, 13.35], [22.18, 13.32], [22.15, 13.25], [22.25, 13.0], [22.03, 12.47], [21.5, 12.25], [21.25, 12.35], [21.0, 12.25], [20.75, 12.35], [20.5, 12.25], [20.25, 12.35], [20.0, 12.25], [19.47, 12.47], [19.25, 13.0], [19.35, 13.25], [19.25, 13.5], [19.47, 14.03]]]]}, "2018-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, 14.03], [19.82, 14.18], [19.85, 14.25], [19.75, 14.5], [19.97, 15.03], [20.5, 15.25], [20.75, 15.15], [20.82, 15.18], [20.85, 15.25], [20.75, 15.5], [20.97, 16.03], [21.5, 16.25], [21.75, 16.15], [22.0, 16.25], [22.53, 16.03], [22.75, 15.5], [22.65, 15.25], [22.75, 15.0], [22.65, 14.75], [22.68, 14.68], [23.03, 14.53], [23.25, 14.0], [23.03, 13.47], [22.68, 13.32], [22.65, 13.25], [22.75, 13.0], [22.53, 12.47], [22.0, 12.25], [21.75, 12.35], [21.68, 12.32], [21.53, 11.97], [21.0, 11.75], [20.47, 11.97], [20.32, 12.32], [20.25, 12.35], [20.0, 12.25], [19.47, 12.47], [19.25, 13.0], [19.35, 13.25], [19.25, 13.5], [19.47, 14.03]]]]}, "2018-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, 14.03], [19.82, 14.18], [19.85, 14.25], [19.75, 14.5], [19.97, 15.03], [20.5, 15.25], [20.75, 15.15], [20.82, 15.18], [20.85, 15.25], [20.75, 15.5], [20.97, 16.03], [21.5, 16.25], [21.75, 16.15], [22.0, 16.25], [22.53, 16.03], [22.75, 15.5], [22.65, 15.25], [22.75, 15.0], [22.65, 14.75], [22.68, 14.68], [23.03, 14.53], [23.25, 14.0], [23.03, 13.47], [22.68, 13.32], [22.65, 13.25], [22.75, 13.0], [22.53, 12.47], [22.0, 12.25], [21.75, 12.35], [21.68, 12.32], [21.53, 11.97], [21.0, 11.75], [20.47, 11.97], [20.32, 12.32], [20.25, 12.35], [20.0, 12.25], [19.47, 12.47], [19.25, 13.0], [19.35, 13.25], [19.25, 13.5], [19.47, 14.03]]]]}, "2018-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, 14.03], [19.82, 14.18], [19.85, 14.25], [19.75, 14.5], [19.97, 15.03], [20.5, 15.25], [20.75, 15.15], [20.82, 15.18], [20.85, 15.25], [20.75, 15.5], [20.97, 16.03], [21.5, 16.25], [21.75, 16.15], [22.0, 16.25], [22.53, 16.03], [22.75, 15.5], [22.65, 15.25], [22.75, 15.0], [22.65, 14.75], [22.68, 14.68], [23.03, 14.53], [23.25, 14.0], [23.03, 13.47], [22.68, 13.32], [22.65, 13.25], [22.75, 13.0], [22.53, 12.47], [22.0, 12.25], [21.75, 12.35], 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evolution of mean t2m anomalies.", "value": [-2.7465534277431445, -2.4547583822668377, -2.619362520569394, -2.616858761481223, -3.612557970352038]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0408549222183296, -2.8951563254496477, -3.112061454253535, -3.0747639520416783, -4.458877884111075]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.638031166562186, -1.57355573172768, -1.6609286059463584, -1.6250938468387617, -2.228672027120659]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8206157650204542, -1.881213754536047, -2.0791937830461986, -1.8225127284771296, -2.8058914925120764]}}