{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:19.284794", "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-Nov-02_to_2022-Nov-08_24.5_-15.5"}, "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": 2022110000162}, "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": "November 02 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 08 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 68113.45635826935}, "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", "Botswana", "Namibia", "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": -15.5}, "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": 24.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.0}, "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": -15.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[23.0, -15.25], [23.25, -15.35], [23.5, -15.25], [23.75, -15.35], [23.82, -15.32], [23.97, -14.97], [24.32, -14.82], [24.47, -14.47], [25.0, -14.25], [25.53, -14.47], [25.75, -15.0], [25.65, -15.25], [25.75, -15.5], [25.65, -15.75], [25.75, -16.0], [25.65, -16.25], [25.75, -16.5], [25.53, -17.03], [25.18, -17.18], [25.03, -17.53], [24.5, -17.75], [24.2, -17.62], [24.15, -17.75], [24.25, -18.0], [24.15, -18.25], [24.25, -18.5], [24.03, -19.03], [23.5, -19.25], [22.97, -19.03], [22.82, -18.68], [22.47, -18.53], [22.25, -18.0], [22.35, -17.75], [22.32, -17.68], [21.97, -17.53], [21.75, -17.0], [21.85, -16.75], [21.75, -16.5], [21.97, -15.97], [22.32, -15.82], [22.47, -15.47], [23.0, -15.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa", "E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.75, -16.5], [25.53, -17.03], [25.0, -17.25], [24.47, -17.03], 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-2.8759496881702944, -3.6299855720136, -2.9441446637841215, -4.605030690688988, -3.394049445899204]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.282117116630502, -2.9334976250142972, -2.9499378115055492, -4.5785092293183425, -3.4585744967435517, -5.1677523548595445, -4.4888580416919694]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.3688103633264066, -1.3600042060644881, -1.323762645721358, -1.689627109048245, -1.3840694907262316, -2.0787997878527, -1.475817785086713]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.94040581199907, -1.3900452407929824, -1.389271781074401, -2.1514734872411916, -1.64053776919867, -2.3479349963273592, -1.960800848081925]}}