{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:22.767080", "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-30_to_2022-Sep-03_35.0_-23.0"}, "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": 2022080001262}, "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 30 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 03 2022"}, "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": 64992.66935919612}, "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"]}, "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"]}, "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": -23.0}, "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": 35.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -27.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[35.65, -25.75], [35.68, -25.82], [36.03, -25.97], [36.25, -26.5], [36.15, -26.75], [36.25, -27.0], [36.03, -27.53], [35.5, -27.75], [34.97, -27.53], [34.75, -27.0], [34.85, -26.75], [34.82, -26.68], [34.47, -26.53], [34.32, -26.18], [33.97, -26.03], [33.82, -25.68], [33.47, -25.53], [33.25, -25.0], [33.47, -24.47], [34.0, -24.25], [34.5, -24.46], [34.82, -24.32], [34.87, -24.2], [34.75, -24.15], [34.5, -24.25], [33.97, -24.03], [33.75, -23.5], [33.85, -23.25], [33.75, -23.0], [33.97, -22.47], [34.38, -22.3], [34.25, -22.0], [34.35, -21.75], [34.25, -21.5], [34.47, -20.97], [35.0, -20.75], [35.53, -20.97], [35.7, -21.37], [36.0, -21.25], [36.53, -21.47], [36.75, -22.0], [36.65, -22.25], [36.68, -22.32], [37.03, -22.47], [37.25, -23.0], [37.15, -23.25], [37.25, -23.5], [37.03, -24.03], [36.68, -24.18], [36.53, -24.53], [36.18, -24.68], [36.03, -25.03], [35.68, -25.18], [35.65, -25.25], [35.75, -25.5], [35.65, -25.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "Madagascar", "S.Indian-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.97, -26.03], [33.75, -25.5], [33.97, -24.97], [34.5, -24.75], [34.75, -24.85], [35.0, -24.75], [35.53, -24.97], [35.75, -25.5], [35.65, -25.75], [35.68, -25.82], [36.03, -25.97], [36.25, -26.5], [36.15, -26.75], [36.25, -27.0], [36.03, -27.53], [35.5, -27.75], [34.97, -27.53], [34.75, -27.0], [34.85, -26.75], [34.82, -26.68], [34.47, -26.53], [34.32, -26.18], [33.97, -26.03]]]]}, "2022-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, -25.53], [33.25, -25.0], [33.47, -24.47], [34.0, -24.25], [34.5, -24.46], [34.82, -24.32], [34.93, -24.07], [34.5, -24.25], [33.97, -24.03], [33.75, -23.5], [33.85, -23.25], [33.75, -23.0], [33.97, -22.47], [34.5, -22.25], [34.8, -22.37], [34.97, -21.97], [35.32, -21.82], [35.47, -21.47], [36.0, -21.25], [36.53, -21.47], [36.75, -22.0], 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"value": -1.7350239104664393}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.172231154731207, 20.449581793019206, 20.323887325243277, 20.131187069994212, 19.643953591560603]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.680345266474603, 19.326302964432045, 18.66363487937332, 17.979714378516974, 19.06234354767338]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3813797493108495, -1.5444742685067288, -1.6606913391287592, -2.041813026040172, -2.129051176329412]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.550912181685419, -2.4348534769461594, -2.7042121291773924, -3.4296943025984774, -2.3131616576457077]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.35419675829424, -1.4333686205950105, -1.356498507202543, -1.5472561602078891, -1.2806603601172584]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4348931658554098, -1.6427630774086146, -1.6911614571687437, -1.9261198648367106, -1.3328385478988642]}}