{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:02.550891", "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": "2022-Aug-24_to_2022-Aug-29_40.0_-10.0"}, "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": 2022080000968}, "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": "August 24 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 29 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 319726.988810746}, "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": ["Mozambique", "Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "S.Eastern-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": ["Indian Ocean", "Mozambique Channel"]}, "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": -10.0}, "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": 40.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.75, -7.5], [40.97, -6.97], [41.5, -6.75], [42.03, -6.97], [42.18, -7.32], [42.25, -7.35], [42.5, -7.25], [43.03, -7.47], [43.18, -7.82], [43.25, -7.85], [43.5, -7.75], [44.03, -7.97], [44.18, -8.32], [44.53, -8.47], [44.68, -8.82], [45.03, -8.97], [45.18, -9.32], [45.53, -9.47], [45.68, -9.82], [46.03, -9.97], [46.25, -10.5], [46.03, -11.03], [45.5, -11.25], [45.2, -11.12], [45.03, -11.53], [44.5, -11.75], [43.97, -11.53], [43.82, -11.18], [43.47, -11.03], [43.32, -10.68], [42.97, -10.53], [42.82, -10.18], [42.75, -10.15], [42.5, -10.25], [41.97, -10.03], [41.82, -9.68], [41.47, -9.53], [41.25, -9.0], [41.35, -8.75], [41.25, -8.5], [41.35, -8.25], [41.32, -8.18], [40.97, -8.03], [40.75, -7.5]]]]}, "2022-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, -9.0], [36.97, -8.47], [37.32, -8.32], [37.47, -7.97], [37.82, -7.82], [37.97, -7.47], [38.32, -7.32], [38.47, -6.97], [39.0, -6.75], [39.53, -6.97], [39.68, -7.32], [40.0, -7.46], [40.32, -7.32], [40.47, -6.97], [41.0, -6.75], [41.25, -6.85], [41.5, -6.75], [42.03, -6.97], [42.18, -7.32], [42.25, -7.35], [42.5, -7.25], [43.03, -7.47], [43.18, -7.82], [43.25, -7.85], [43.5, -7.75], [44.03, -7.97], [44.18, -8.32], [44.53, -8.47], [44.68, -8.82], [45.03, -8.97], [45.18, -9.32], [45.53, -9.47], [45.68, -9.82], [46.03, -9.97], [46.25, -10.5], [46.03, -11.03], [45.5, -11.25], [45.2, -11.12], [45.15, -11.25], [45.25, -11.5], [45.15, -11.75], [45.25, -12.0], [45.03, -12.53], [44.5, -12.75], [44.25, -12.65], [44.0, -12.75], [43.47, -12.53], [43.25, -12.0], [43.35, -11.75], [43.32, -11.68], [43.25, -11.65], [43.0, -11.75], [42.75, -11.65], [42.68, -11.68], [42.53, -12.03], [42.0, -12.25], [41.75, -12.15], [41.5, -12.25], [41.25, -12.15], [41.0, -12.25], [40.75, -12.15], [40.5, -12.25], [39.97, -12.03], [39.75, -11.5], [39.85, -11.25], [39.75, -11.0], [39.85, -10.75], [39.82, -10.68], [39.5, -10.54], [39.0, -10.75], [38.75, -10.65], [38.5, -10.75], [37.97, -10.53], [37.8, -10.12], [37.68, -10.18], [37.53, -10.53], [37.0, -10.75], [36.47, -10.53], [36.25, -10.0], [36.47, -9.47], [36.82, -9.32], [36.85, -9.25], [36.75, -9.0]]]]}, "2022-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, -9.0], [36.97, -8.47], [37.32, -8.32], [37.47, -7.97], [37.82, -7.82], [37.97, -7.47], [38.32, -7.32], [38.47, -6.97], [39.0, -6.75], [39.53, -6.97], [39.68, -7.32], [40.0, -7.46], [40.32, -7.32], [40.47, -6.97], [41.0, -6.75], [41.25, -6.85], [41.5, -6.75], [42.03, -6.97], [42.18, -7.32], [42.25, -7.35], [42.5, -7.25], [43.03, -7.47], [43.18, -7.82], [43.25, -7.85], [43.5, -7.75], [44.03, -7.97], [44.18, -8.32], [44.53, -8.47], [44.68, -8.82], [45.03, -8.97], [45.18, -9.32], [45.53, -9.47], [45.68, -9.82], [46.03, -9.97], [46.25, -10.5], [46.03, -11.03], [45.5, -11.25], [45.25, -11.15], [45.18, -11.18], [45.15, -11.25], [45.25, -11.5], [45.15, -11.75], [45.25, -12.0], [45.15, -12.25], [45.25, -12.5], [45.03, -13.03], [44.5, -13.25], [43.97, -13.03], [43.82, -12.68], [43.47, -12.53], [43.25, -12.0], [43.35, -11.75], [43.32, -11.68], [43.25, -11.65], [43.0, -11.75], [42.75, -11.65], [42.68, -11.68], [42.65, -11.75], [42.75, -12.0], [42.53, -12.53], [42.0, -12.75], [41.75, -12.65], [41.5, -12.75], [41.25, -12.65], [41.0, -12.75], [40.47, -12.53], [40.32, -12.18], [40.25, -12.15], [40.0, -12.25], [39.47, -12.03], [39.32, -11.68], [38.97, -11.53], [38.75, -11.0], [38.85, -10.75], [38.82, -10.68], [38.75, -10.65], [38.5, -10.75], [37.97, -10.53], [37.8, -10.12], [37.68, -10.18], [37.53, -10.53], [37.0, -10.75], [36.47, -10.53], [36.25, -10.0], [36.47, -9.47], [36.82, -9.32], [36.85, -9.25], [36.75, -9.0]]]]}, "2022-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, -9.0], [36.97, -8.47], [37.32, -8.32], [37.47, -7.97], [37.82, -7.82], [37.97, -7.47], [38.32, -7.32], [38.47, -6.97], [39.0, -6.75], [39.53, -6.97], [39.68, -7.32], [40.0, -7.46], [40.32, -7.32], [40.47, -6.97], [41.0, -6.75], [41.53, -6.97], [41.68, -7.32], [41.75, -7.35], [42.0, -7.25], [42.53, -7.47], [42.75, -8.0], [42.65, -8.25], [42.68, -8.32], [43.03, -8.47], [43.18, -8.82], [43.25, -8.85], [43.5, -8.75], [44.03, -8.97], [44.18, -9.32], [44.25, -9.35], [44.5, -9.25], [45.03, -9.47], [45.18, -9.82], [45.25, -9.85], [45.5, -9.75], [46.03, -9.97], [46.25, -10.5], [46.03, -11.03], [45.5, -11.25], [45.25, -11.15], [45.18, -11.18], [45.15, -11.25], [45.25, -11.5], [45.15, -11.75], [45.25, -12.0], [45.15, -12.25], [45.25, -12.5], [45.03, -13.03], [44.5, -13.25], [43.97, -13.03], [43.82, -12.68], [43.47, -12.53], [43.25, -12.0], [43.35, -11.75], [43.32, -11.68], [43.25, -11.65], [43.0, -11.75], [42.75, -11.65], [42.68, -11.68], [42.65, -11.75], [42.75, -12.0], [42.53, -12.53], [42.0, -12.75], [41.75, -12.65], [41.5, -12.75], [41.25, -12.65], [41.0, -12.75], [40.75, -12.65], [40.5, -12.75], [40.25, -12.65], [40.0, -12.75], [39.47, -12.53], [39.25, -12.0], [39.35, -11.75], [39.32, -11.68], [38.97, -11.53], [38.75, -11.0], [38.85, -10.75], [38.82, -10.68], [38.75, -10.65], [38.5, -10.75], [37.97, -10.53], [37.8, -10.12], [37.68, -10.18], [37.53, -10.53], [37.0, -10.75], [36.47, -10.53], [36.25, -10.0], [36.47, -9.47], [36.82, -9.32], [36.85, -9.25], [36.75, -9.0]]]]}, "2022-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.82, -7.82], [37.97, -7.47], [38.32, -7.32], [38.47, -6.97], [39.0, -6.75], [39.53, -6.97], [39.68, -7.32], [40.0, -7.46], [40.32, -7.32], [40.47, -6.97], [41.0, -6.75], [41.53, -6.97], [41.68, -7.32], [41.75, -7.35], [42.0, -7.25], [42.53, -7.47], [42.75, -8.0], [42.65, -8.25], [42.68, -8.32], [43.03, -8.47], [43.18, -8.82], [43.25, -8.85], [43.5, -8.75], [44.03, -8.97], [44.18, -9.32], [44.25, -9.35], [44.5, -9.25], [45.03, -9.47], [45.18, -9.82], [45.53, -9.97], [45.75, -10.5], [45.53, -11.03], [45.18, -11.18], [45.03, -11.53], [44.68, -11.68], [44.65, -11.75], [44.68, -11.82], [45.03, -11.97], [45.25, -12.5], [45.03, -13.03], [44.5, -13.25], [43.97, -13.03], [43.82, -12.68], [43.47, -12.53], [43.25, -12.0], [43.35, -11.75], [43.32, -11.68], [43.25, -11.65], [43.0, -11.75], [42.75, -11.65], [42.63, -11.7], [42.75, -12.0], [42.53, -12.53], [42.0, -12.75], [41.75, -12.65], [41.5, -12.75], [41.25, -12.65], [41.0, -12.75], [40.75, -12.65], [40.5, -12.75], [40.25, -12.65], [40.0, -12.75], [39.47, -12.53], [39.25, -12.0], [39.35, -11.75], [39.32, -11.68], [38.97, -11.53], [38.75, -11.0], [38.85, -10.75], [38.82, -10.68], [38.47, -10.53], [38.32, -10.18], [37.97, -10.03], [37.82, -9.68], [37.75, -9.65], [37.5, -9.75], [36.97, -9.53], [36.75, -9.0], [36.97, -8.47], [37.32, -8.32], [37.47, -7.97], [37.82, -7.82]]]]}, "2022-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.97, -9.53], [36.75, -9.0], [36.97, -8.47], [37.5, -8.25], [37.75, -8.35], [38.0, -8.25], [38.3, -8.37], [38.35, -8.25], [38.25, -8.0], [38.35, -7.75], [38.25, -7.5], [38.47, -6.97], [39.0, -6.75], [39.53, -6.97], [39.68, -7.32], [40.0, -7.46], [40.32, -7.32], [40.47, -6.97], [41.0, -6.75], [41.53, -6.97], [41.68, -7.32], [41.75, -7.35], [42.0, -7.25], [42.53, -7.47], [42.75, -8.0], [42.65, -8.25], [42.75, -8.5], [42.65, -8.75], [42.75, -9.0], [42.53, -9.53], [42.0, -9.75], [41.75, -9.65], [41.5, -9.75], [41.25, -9.65], [41.18, -9.68], [41.15, -9.75], [41.25, -10.0], [41.03, -10.53], [40.63, -10.7], [40.75, -11.0], [40.63, -11.3], [41.03, -11.47], [41.25, -12.0], [41.03, -12.53], [40.5, -12.75], [40.25, -12.65], [40.0, -12.75], [39.47, -12.53], [39.25, -12.0], [39.46, -11.5], [39.32, -11.18], [38.97, -11.03], [38.75, -10.5], [38.96, -10.0], [38.75, -9.5], [38.85, -9.25], [38.82, -9.18], [38.7, -9.12], [38.53, -9.53], [38.0, -9.75], [37.75, -9.65], [37.5, -9.75], [36.97, -9.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.728585210736071}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.8436263646165452}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.430442139177615, 23.392046499604305, 23.40611280326965, 23.445289155785417, 23.490929026790866, 23.531014445886285]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.066746111172165, 21.093008278775244, 20.80182705983509, 21.191348724850684, 21.03348642983468, 21.59264119028802]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8827402011385947, -0.92762435768851, -0.8590749734768897, -0.8168190412493326, -0.7960878559595458, -0.7268699159939018]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2018161010743142, -1.728585210736071, -1.6495166306031024, -1.4970169445461465, -1.4421626416375943, -1.1865191723456974]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1383782437366716, -2.129977232266766, -1.9395904071030041, -1.7956479776016843, -1.7480603772323384, -1.617569769221091]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.854256217844917, -3.5810603599385415, -3.068245681096339, -2.489764211837226, -2.508731982050438, -2.222681055376554]}}