{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:54.707194", "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": "2023-Aug-31_to_2023-Sep-05_17.5_-9.5"}, "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": 2023080000794}, "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 31 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 05 2023"}, "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": 67192.08786246853}, "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"]}, "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": []}, "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": -9.5}, "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": 17.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[18.15, -9.25], [18.25, -9.5], [18.03, -10.03], [17.5, -10.25], [17.25, -10.15], [17.18, -10.18], [17.03, -10.53], [16.5, -10.75], [16.25, -10.65], [16.0, -10.75], [15.47, -10.53], [15.32, -10.18], [15.25, -10.15], [15.0, -10.25], [14.47, -10.03], [14.32, -9.68], [14.25, -9.65], [14.0, -9.75], [13.47, -9.53], [13.25, -9.0], [13.35, -8.75], [13.25, -8.5], [13.47, -7.97], [13.82, -7.82], [13.85, -7.75], [13.75, -7.5], [13.85, -7.25], [13.75, -7.0], [13.97, -6.47], [14.5, -6.25], [14.75, -6.35], [15.0, -6.25], [15.53, -6.47], [15.75, -7.0], [15.65, -7.25], [15.75, -7.5], [15.54, -8.0], [15.59, -8.11], [15.68, -8.32], [15.75, -8.35], [16.0, -8.25], [16.5, -8.46], [17.0, -8.25], [17.25, -8.35], [17.5, -8.25], [18.03, -8.47], [18.25, -9.0], [18.15, -9.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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-1.5090111767118515, -1.360781042449568, -1.439642189219839]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8969645669945407, -1.6731001047036216, -2.173146295632705, -2.282481973405538, -1.6589063520902414, -1.7724066757933201]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.760806709382049, -1.67237647644391, -1.924872067228821, -1.904582450880666, -1.6789394427852062, -1.7391878983686424]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0448509925673415, -1.9105652562124549, -2.6621707511749286, -2.569142870867387, -2.091606725842154, -2.215150295529054]}}