{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:37.103107", "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-28_to_2022-Dec-02_37.0_-15.0"}, "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": 2022110001149}, "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 28 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 02 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 125372.39099238477}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -15.0}, "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": 37.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 33.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[33.25, -12.85], [33.5, -12.75], [33.75, -12.85], [34.0, -12.75], [34.53, -12.97], [34.68, -13.32], [34.75, -13.35], [35.0, 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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": {"2022-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.97, -13.97], [33.5, -13.75], [34.03, -13.97], [34.25, -14.5], [34.03, -15.03], [33.5, -15.25], [32.97, -15.03], [32.75, -14.5], [32.97, -13.97]]]]}, "2022-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, -14.53], [32.25, -14.0], [32.47, -13.47], [33.0, -13.25], [33.53, -13.47], [33.68, -13.82], [33.75, -13.85], [34.0, -13.75], [34.53, -13.97], [34.68, -14.32], [35.03, -14.47], [35.25, -15.0], [35.15, -15.25], [35.25, -15.5], [35.03, -16.03], [34.5, -16.25], [33.97, -16.03], [33.82, -15.68], [33.47, -15.53], [33.32, -15.18], [32.97, -15.03], [32.82, -14.68], [32.47, -14.53]]]]}, "2022-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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daily evolution of maximum t2m.", "value": [19.75457775409211, 19.11191893746343, 17.5392700818648, 17.725200352567356, 20.64082001168464]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3025929208307616, -2.719467956843649, -3.2189939570539687, -3.6384335226951454, -2.647587190185975]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3025929208307616, -3.224370664913806, -4.655278737447645, -5.252110282215938, -3.3586077954033726]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2087143494407302, -1.4096998209081317, -1.8264112850914058, -2.1693045697621307, -1.6301694733817693]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2087143494407302, -1.562601893845563, -2.292991390741722, -2.8890726444588246, -2.308694681905394]}}