{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:41.976365", "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-Jul-22_to_2022-Jul-25_346.0_16.5"}, "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": 2022070000899}, "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": "July 22 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 25 2022"}, "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": 56317.68544066848}, "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": ["Mauritania", "Senegal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 16.5}, "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": 346.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "346.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 344.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 348.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.03, 16.53], [-15.68, 16.68], [-15.53, 17.03], [-15.0, 17.25], [-14.75, 17.15], [-14.5, 17.25], [-14.25, 17.15], [-14.18, 17.18], [-14.03, 17.53], [-13.5, 17.75], [-13.25, 17.65], [-13.0, 17.75], [-12.75, 17.65], [-12.68, 17.68], [-12.53, 18.03], [-12.0, 18.25], [-11.47, 18.03], [-11.25, 17.5], [-11.35, 17.25], [-11.25, 17.0], [-11.35, 16.75], [-11.25, 16.5], [-11.47, 15.97], [-12.0, 15.75], [-12.25, 15.85], [-12.5, 15.75], [-12.75, 15.85], [-12.82, 15.82], [-12.97, 15.47], [-13.5, 15.25], [-13.75, 15.35], [-14.0, 15.25], [-14.25, 15.35], [-14.5, 15.25], [-14.75, 15.35], [-14.82, 15.32], [-14.97, 14.97], [-15.5, 14.75], [-16.03, 14.97], [-16.25, 15.5], [-16.15, 15.75], [-16.25, 16.0], [-16.03, 16.53]]]]}, "2022-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.15, 16.25], [-16.25, 16.5], [-16.03, 17.03], [-15.5, 17.25], [-15.25, 17.15], [-15.0, 17.25], [-14.75, 17.15], [-14.5, 17.25], [-14.25, 17.15], [-14.18, 17.18], [-14.03, 17.53], [-13.5, 17.75], [-13.25, 17.65], [-13.0, 17.75], [-12.75, 17.65], [-12.68, 17.68], [-12.53, 18.03], [-12.0, 18.25], [-11.47, 18.03], [-11.25, 17.5], [-11.35, 17.25], [-11.25, 17.0], [-11.35, 16.75], [-11.25, 16.5], [-11.47, 15.97], [-12.0, 15.75], [-12.25, 15.85], [-12.5, 15.75], [-12.75, 15.85], [-12.82, 15.82], [-12.97, 15.47], [-13.5, 15.25], [-13.75, 15.35], [-14.0, 15.25], [-14.25, 15.35], [-14.5, 15.25], [-14.75, 15.35], [-14.82, 15.32], [-14.97, 14.97], [-15.5, 14.75], [-16.03, 14.97], [-16.25, 15.5], [-16.15, 15.75], [-16.25, 16.0], [-16.15, 16.25]]]]}, "2022-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.15, 16.25], [-16.25, 16.5], [-16.03, 17.03], [-15.5, 17.25], [-15.25, 17.15], [-15.0, 17.25], [-14.75, 17.15], [-14.5, 17.25], [-14.25, 17.15], [-14.18, 17.18], [-14.03, 17.53], [-13.5, 17.75], [-13.25, 17.65], [-13.0, 17.75], [-12.75, 17.65], [-12.68, 17.68], [-12.53, 18.03], [-12.0, 18.25], [-11.47, 18.03], [-11.25, 17.5], [-11.35, 17.25], [-11.25, 17.0], [-11.35, 16.75], [-11.25, 16.5], [-11.47, 15.97], [-12.0, 15.75], [-12.25, 15.85], [-12.5, 15.75], [-12.75, 15.85], [-12.82, 15.82], [-12.97, 15.47], [-13.5, 15.25], [-13.75, 15.35], [-14.0, 15.25], [-14.25, 15.35], [-14.5, 15.25], [-14.75, 15.35], [-14.82, 15.32], [-14.97, 14.97], [-15.5, 14.75], [-16.03, 14.97], [-16.25, 15.5], [-16.15, 15.75], [-16.25, 16.0], [-16.15, 16.25]]]]}, "2022-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.03, 17.03], [-15.5, 17.25], [-15.25, 17.15], [-15.0, 17.25], [-14.75, 17.15], [-14.5, 17.25], [-14.25, 17.15], [-14.0, 17.25], [-13.75, 17.15], [-13.68, 17.18], [-13.53, 17.53], [-13.0, 17.75], [-12.75, 17.65], [-12.68, 17.68], [-12.53, 18.03], [-12.0, 18.25], [-11.47, 18.03], [-11.25, 17.5], [-11.35, 17.25], [-11.25, 17.0], [-11.35, 16.75], [-11.25, 16.5], [-11.47, 15.97], [-12.0, 15.75], [-12.25, 15.85], [-12.5, 15.75], [-12.75, 15.85], [-12.82, 15.82], [-12.97, 15.47], [-13.5, 15.25], [-13.75, 15.35], [-14.0, 15.25], [-14.25, 15.35], [-14.5, 15.25], [-14.75, 15.35], [-15.0, 15.25], [-15.25, 15.35], [-15.5, 15.25], [-16.03, 15.47], [-16.25, 16.0], [-16.15, 16.25], [-16.25, 16.5], [-16.03, 17.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.182779820914163}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.154466782918317}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.676586494050127, 28.96585033966886, 27.409793024700093, 28.49476349464595]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.52318779462513, 28.11528529124388, 25.664816779902708, 27.662276526417486]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.008695842561713, -2.5512872186245987, -4.0530362200052386, -2.9786708619387876]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.8057299250774577, -3.575391038029693, -5.182779820914163, -3.863935495934072]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9340480104609072, -1.6346082154967105, -2.6854431060119865, -1.8762033306435828]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6564513922747364, -2.010010201924875, -3.5454258072965805, -2.266468860942746]}}