{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:07.188910", "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": "2024-Jun-25_to_2024-Jun-28_22.0_-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": 2024060000640}, "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 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 28 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 124995.4182905573}, "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", "Congo DRC"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "W.Southern-Africa"]}, "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": 22.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.85, -9.75], [18.75, -9.5], [18.85, -9.25], [18.75, -9.0], 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-8.47], [23.25, -9.0], [23.15, -9.25], [23.18, -9.32], [23.53, -9.47], [23.75, -10.0], [23.53, -10.53], [23.18, -10.68], [23.03, -11.03], [22.5, -11.25], [22.25, -11.15], [22.0, -11.25], [21.75, -11.15], [21.5, -11.25], [21.25, -11.15], [21.18, -11.18], [21.03, -11.53], [20.5, -11.75], [20.25, -11.65], [20.0, -11.75], [19.47, -11.53], [19.32, -11.18], [18.97, -11.03], [18.75, -10.5], [18.85, -10.25], [18.75, -10.0], [18.85, -9.75], [18.75, -9.5], [18.85, -9.25], [18.82, -9.18], [18.47, -9.03], [18.25, -8.5], [18.35, -8.25], [18.25, -8.0], [18.47, -7.47]]]]}, "2024-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, -7.47], [19.0, -7.25], [19.25, -7.35], [19.5, -7.25], [19.75, -7.35], [20.0, -7.25], [20.25, -7.35], [20.5, -7.25], [21.03, -7.47], [21.18, -7.82], [21.25, -7.85], [21.5, -7.75], [21.75, -7.85], [22.0, -7.75], [22.53, -7.97], [22.68, -8.32], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.18, -9.32], [23.53, -9.47], [23.75, -10.0], [23.53, 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evolution of mean t2m anomalies.", "value": [-1.6969205068238262, -1.9659234118082263, -1.7338048272855642, -1.4239938107346153]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.164418015779006, -2.382168951486449, -2.1255337689851217, -1.6453171088633098]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5880305013152018, -1.9023070875667152, -1.7131686371880175, -1.4947001093866956]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.945149691741005, -2.3719966034731716, -2.1743742854573442, -1.7111222037364142]}}