{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:53:38.295217", "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": "2026-Jun-12_to_2026-Jun-15_23.0_-10.5"}, "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": 2026060000421}, "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 12 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 15 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 63964.796112671116}, "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", "Congo DRC"]}, "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": []}, "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": -10.5}, "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": 23.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.0\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": 23.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.75, -10.0], [19.97, -9.47], [20.32, -9.32], [20.47, -8.97], [21.0, -8.75], [21.25, -8.85], [21.5, -8.75], [21.75, -8.85], [21.82, -8.82], [21.97, -8.47], [22.5, -8.25], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.18, -9.82], [23.25, -9.85], [23.5, -9.75], [24.03, -9.97], [24.25, -10.5], [24.03, -11.03], [23.5, -11.25], [23.25, -11.15], [23.0, -11.25], [22.5, -11.04], [22.0, -11.25], [21.75, -11.15], [21.5, -11.25], [21.25, -11.15], [21.0, -11.25], [20.47, -11.03], [20.32, -10.68], [19.97, -10.53], [19.75, -10.0]]]]}, "2026-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, -8.47], [20.0, -8.25], [20.25, -8.35], [20.5, -8.25], [21.03, -8.47], [21.18, -8.82], [21.25, -8.85], [21.5, -8.75], [21.75, -8.85], [21.82, -8.82], [21.85, -8.75], [21.75, -8.5], [21.97, -7.97], [22.5, -7.75], [23.03, -7.97], [23.25, -8.5], [23.15, -8.75], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.18, -9.82], [23.25, -9.85], [23.5, -9.75], [24.03, -9.97], [24.25, -10.5], [24.03, -11.03], [23.5, -11.25], [23.25, -11.15], [23.0, -11.25], [22.75, -11.15], [22.5, -11.25], [22.25, -11.15], [22.0, -11.25], [21.75, -11.15], [21.5, -11.25], [21.25, -11.15], [21.0, -11.25], [20.47, -11.03], [20.32, -10.68], [19.97, -10.53], [19.82, -10.18], [19.47, -10.03], [19.25, -9.5], [19.35, -9.25], [19.25, -9.0], [19.47, -8.47]]]]}, "2026-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, -8.47], [20.0, -8.25], [20.25, -8.35], [20.5, -8.25], [21.03, -8.47], [21.18, -8.82], [21.25, -8.85], [21.5, -8.75], [21.75, -8.85], [21.82, -8.82], [21.85, -8.75], [21.75, -8.5], [21.97, -7.97], [22.5, -7.75], [23.03, -7.97], [23.25, -8.5], [23.15, -8.75], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.18, -9.82], [23.25, -9.85], [23.5, -9.75], [24.03, -9.97], [24.25, -10.5], [24.03, -11.03], [23.5, -11.25], [23.25, -11.15], [23.0, -11.25], [22.75, -11.15], [22.5, -11.25], [22.25, -11.15], [22.0, -11.25], [21.75, -11.15], [21.5, -11.25], [21.25, -11.15], [21.0, -11.25], [20.47, -11.03], [20.32, -10.68], [19.97, -10.53], [19.82, -10.18], [19.47, -10.03], [19.25, -9.5], [19.35, -9.25], [19.25, -9.0], [19.47, -8.47]]]]}, "2026-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.75, -10.5], [21.97, -9.97], [22.5, -9.75], [22.75, -9.85], [23.0, -9.75], [23.53, -9.97], [23.75, -10.5], [23.53, -11.03], [23.0, -11.25], [22.75, -11.15], [22.5, -11.25], [21.97, -11.03], [21.75, -10.5]]], [[[20.25, -8.35], [20.5, -8.25], [21.03, -8.47], [21.25, -9.0], [21.15, -9.25], [21.25, -9.5], [21.03, -10.03], [20.5, -10.25], [20.25, -10.15], [20.0, -10.25], [19.47, -10.03], [19.25, -9.5], [19.35, -9.25], [19.25, -9.0], [19.47, -8.47], [20.0, -8.25], [20.25, -8.35]]], [[[21.75, -8.5], [21.97, -7.97], [22.5, -7.75], [23.03, -7.97], [23.25, -8.5], [23.03, -9.03], [22.5, -9.25], [21.97, -9.03], [21.75, -8.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3134721988370757}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7611263937177535}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.129285939534554, 20.92439228845018, 21.047614457872214, 22.060090092250277]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.96989466349288, 19.480098978678427, 19.658834075927757, 20.82338994344076]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6656179276878713, -2.0005808361594912, -1.7769005304357528, -1.200101654874004]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9367809536269078, -2.3134721988370757, -2.306877865725255, -1.470183051525055]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.424279006378357, -1.826601730972921, -1.6649690788850326, -1.2726309184115814]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5693562287315204, -2.1238626990212275, -1.921568805341465, -1.375115339819846]}}