{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:56.431071", "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-May-02_to_2022-May-04_36.0_-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": 2022050000159}, "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": "May 02 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 04 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 150700.9538110303}, "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": ["Malawi", "Mozambique", "Tanzania, United Republic of", "Zambia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "Africa", "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": -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": 36.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[31.0, -11.25], [31.25, -11.35], [31.5, -11.25], [31.75, -11.35], [32.0, -11.25], [32.25, -11.35], [32.32, -11.32], [32.35, -11.25], [32.25, -11.0], [32.47, -10.47], [33.0, -10.25], [33.25, -10.35], [33.5, -10.25], [34.03, -10.47], [34.25, -11.0], [34.15, -11.25], [34.25, -11.5], [34.15, -11.75], [34.2, -11.87], [34.5, -11.75], [34.8, -11.87], [34.97, -11.47], [35.5, -11.25], [35.75, -11.35], [35.82, -11.32], [35.97, -10.97], [36.5, -10.75], [37.03, -10.97], [37.18, -11.32], [37.53, -11.47], [37.68, -11.82], [38.03, -11.97], [38.25, -12.5], [38.15, -12.75], [38.25, -13.0], [38.15, -13.25], [38.25, -13.5], [38.15, -13.75], [38.25, -14.0], [38.03, -14.53], [37.5, -14.75], [37.25, -14.65], [37.0, -14.75], [36.47, -14.53], [36.25, -14.0], [36.35, -13.75], [36.3, -13.62], [36.18, -13.68], [36.04, -14.0], [36.25, -14.5], [36.03, -15.03], [35.68, -15.18], [35.53, -15.53], [35.0, -15.75], [34.47, -15.53], [34.25, -15.0], [34.35, -14.75], [34.32, -14.68], [33.97, -14.53], [33.82, -14.18], [33.75, -14.15], [33.5, -14.25], [33.25, -14.15], [33.0, -14.25], [32.75, -14.15], [32.5, -14.25], [31.97, -14.03], [31.75, -13.5], [31.85, -13.25], [31.8, -13.12], [31.68, -13.18], [31.53, -13.53], [31.0, -13.75], [30.47, -13.53], [30.25, -13.0], [30.46, -12.5], [30.25, -12.0], [30.47, -11.47], [31.0, -11.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -12.0], [30.47, -11.47], [31.0, -11.25], [31.25, -11.35], [31.5, -11.25], [31.75, -11.35], [32.0, -11.25], [32.25, -11.35], [32.32, -11.32], [32.35, -11.25], [32.25, -11.0], [32.47, -10.47], [33.0, -10.25], [33.25, -10.35], [33.5, -10.25], [34.03, -10.47], [34.25, -11.0], [34.15, -11.25], [34.25, -11.5], [34.15, -11.75], [34.2, -11.87], [34.5, -11.75], [34.8, -11.87], [34.97, -11.47], [35.5, -11.25], [35.75, -11.35], [35.82, -11.32], [35.97, -10.97], [36.5, 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t2m.", "value": [19.931185754936223, 19.535697397459387, 20.155180255707194]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.516957693215545, 15.085905523479084, 15.816830550022587]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0670874761352955, -2.465669503849704, -1.8253802226665972]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8401378694713344, -3.243305864118554, -2.3381406530126014]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8136980449175601, -2.183246121827626, -1.5571467711944778]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.538083847415192, -2.93800092788228, -1.9408718214250347]}}