{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:48.667044", "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-Jun-06_to_2022-Jun-11_34.5_-16.0"}, "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": 2022060000343}, "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 06 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 11 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": 98131.46958882388}, "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", "Zambia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -16.0}, "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": 34.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[36.53, -15.97], [36.75, -16.5], [36.54, -17.0], [36.75, -17.5], [36.53, -18.03], [36.18, -18.18], [36.03, -18.53], [35.68, -18.68], [35.53, -19.03], [35.0, -19.25], [34.47, -19.03], [34.25, -18.5], [34.35, -18.25], [34.25, -18.0], [34.35, -17.75], [34.32, -17.68], [33.97, -17.53], [33.82, -17.18], [33.47, -17.03], [33.25, -16.5], [33.35, -16.25], [33.32, -16.18], [32.97, -16.03], [32.75, -15.5], [32.85, -15.25], [32.82, -15.18], [32.47, -15.03], [32.32, -14.68], [32.25, -14.65], [32.0, -14.75], [31.47, -14.53], [31.25, -14.0], [31.35, -13.75], [31.25, -13.5], [31.35, -13.25], [31.25, -13.0], [31.47, -12.47], [32.0, -12.25], [32.25, -12.35], [32.5, -12.25], [33.03, -12.47], [33.25, -13.0], [33.15, -13.25], [33.18, -13.32], [33.53, -13.47], [33.7, -13.87], [34.0, -13.75], [34.53, -13.97], [34.75, -14.5], [34.65, -14.75], [34.68, -14.82], [34.75, -14.85], [35.0, -14.75], [35.53, -14.97], [35.68, -15.32], [36.03, -15.47], [36.18, -15.82], [36.53, -15.97]]]]}}, "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": {"2022-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.35, -17.75], [34.25, -17.5], [34.35, -17.25], [34.25, -17.0], [34.47, -16.47], [34.82, -16.32], [34.85, -16.25], [34.75, -16.0], [34.97, -15.47], [35.5, -15.25], [36.03, -15.47], [36.18, -15.82], [36.53, -15.97], [36.75, -16.5], [36.54, -17.0], [36.75, -17.5], [36.53, -18.03], [36.18, -18.18], [36.03, -18.53], [35.68, -18.68], [35.53, -19.03], [35.0, -19.25], [34.47, -19.03], [34.25, -18.5], [34.35, -18.25], [34.25, -18.0], [34.35, -17.75]]], [[[33.47, -15.03], [33.25, -14.5], [33.47, -13.97], [34.0, -13.75], [34.53, -13.97], [34.75, -14.5], [34.53, -15.03], [34.0, -15.25], [33.47, -15.03]]], [[[31.97, -14.03], [31.75, -13.5], [31.97, -12.97], [32.5, -12.75], [33.03, -12.97], [33.25, -13.5], [33.03, -14.03], [32.5, -14.25], [31.97, -14.03]]]]}, "2022-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.25, -13.5], [31.35, -13.25], [31.25, -13.0], [31.47, -12.47], [32.0, -12.25], [32.25, -12.35], [32.5, -12.25], [33.03, -12.47], [33.25, -13.0], [33.15, -13.25], [33.18, -13.32], [33.53, -13.47], [33.7, -13.87], [34.0, -13.75], [34.53, -13.97], [34.75, -14.5], [34.65, -14.75], [34.68, -14.82], [34.75, -14.85], [35.0, -14.75], [35.53, -14.97], [35.68, -15.32], [36.03, -15.47], [36.18, -15.82], [36.53, -15.97], [36.75, -16.5], [36.54, -17.0], [36.75, -17.5], [36.53, -18.03], [36.18, -18.18], [36.03, -18.53], [35.68, -18.68], [35.53, -19.03], [35.0, -19.25], [34.47, -19.03], [34.25, -18.5], [34.35, -18.25], [34.25, -18.0], [34.35, -17.75], [34.32, -17.68], [33.97, -17.53], [33.82, -17.18], [33.47, -17.03], [33.25, -16.5], [33.35, -16.25], [33.32, -16.18], [32.97, -16.03], [32.75, -15.5], [32.85, -15.25], [32.82, -15.18], [32.47, -15.03], [32.32, -14.68], [32.25, -14.65], [32.0, -14.75], [31.47, -14.53], [31.25, -14.0], [31.35, -13.75], [31.25, -13.5]]]]}, "2022-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.25, -13.5], [31.35, -13.25], [31.25, -13.0], [31.47, -12.47], [32.0, -12.25], [32.25, -12.35], [32.5, -12.25], [33.03, -12.47], [33.25, -13.0], [33.15, -13.25], [33.18, -13.32], [33.53, -13.47], [33.7, -13.87], [34.0, -13.75], [34.53, -13.97], [34.75, -14.5], [34.65, -14.75], [34.68, -14.82], [34.75, -14.85], [35.0, -14.75], [35.53, -14.97], [35.68, -15.32], [36.03, -15.47], [36.18, -15.82], [36.53, -15.97], [36.75, -16.5], [36.54, -17.0], [36.75, -17.5], [36.53, -18.03], [36.18, -18.18], [36.03, -18.53], [35.68, -18.68], [35.53, -19.03], [35.0, -19.25], [34.47, -19.03], [34.25, -18.5], [34.35, -18.25], [34.25, -18.0], [34.35, -17.75], [34.32, -17.68], [33.97, -17.53], [33.82, -17.18], [33.47, -17.03], [33.25, -16.5], [33.35, -16.25], [33.32, -16.18], [32.97, -16.03], [32.75, -15.5], [32.85, -15.25], [32.82, -15.18], [32.47, -15.03], [32.32, -14.68], [32.25, -14.65], [32.0, -14.75], [31.47, 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-14.75], [31.47, -14.53], [31.25, -14.0], [31.35, -13.75], [31.25, -13.5]]]]}, "2022-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.25, -15.0], [33.47, -14.47], [34.0, -14.25], [34.53, -14.47], [34.75, -15.0], [34.63, -15.3], [35.03, -15.47], [35.25, -16.0], [35.03, -16.53], [34.5, -16.75], [34.25, -16.65], [34.0, -16.75], [33.47, -16.53], [33.25, -16.0], [33.46, -15.5], [33.25, -15.0]]]]}, "2022-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.25, -15.0], [33.47, -14.47], [34.0, -14.25], [34.53, -14.47], [34.75, -15.0], [34.63, -15.3], [35.03, -15.47], [35.25, -16.0], [35.03, -16.53], [34.5, -16.75], [34.25, -16.65], [34.0, -16.75], [33.47, -16.53], [33.25, -16.0], [33.46, -15.5], [33.25, -15.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6289932929688007}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.670389322504067}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.170743194375007, 17.301655652310785, 17.406267187910316, 17.623596949782097, 17.686140694822313, 17.414068902468387]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.721179327851985, 12.873835109703577, 12.75407879123776, 13.78819605590553, 15.066350951948777, 14.537238670622685]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3292606142588546, -2.9369103102825522, -2.7636989243529952, -2.4795230739573526, -2.2132134744789482, -2.4290714067929002]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.620120948479439, -3.4050428993529067, -3.6289932929688007, -3.342460823791555, -2.3707545480924637, -2.671895017761301]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4738195826333953, -1.7548016744636916, -1.6260431395326347, -1.4628891435312459, -1.2622432082926391, -1.4159844676402475]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7375263518940678, -2.0331812261027498, -2.122651315254776, -1.9052679421377616, -1.3425736588404495, -1.6163557373540511]}}