{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:16.444448", "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": "2013-Jan-24_to_2013-Jan-28_347.5_12.0"}, "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": 2013010000779}, "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": "January 24 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 28 2013"}, "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": 66613.31700558499}, "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": ["Guinea", "Guinea-Bissau", "Senegal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-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": 12.0}, "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": 347.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "347.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 344.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 348.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.75, 11.0], [-14.53, 11.53], [-14.0, 11.75], [-13.47, 11.53], [-13.32, 11.18], [-12.97, 11.03], [-12.75, 10.5], [-12.97, 9.97], [-13.5, 9.75], [-14.03, 9.97], [-14.18, 10.32], [-14.53, 10.47], [-14.75, 11.0]]]]}, "2013-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.53, 13.03], [-15.0, 13.25], [-14.47, 13.03], [-14.32, 12.68], [-14.0, 12.54], [-13.68, 12.68], [-13.53, 13.03], [-13.0, 13.25], [-12.47, 13.03], [-12.32, 12.68], [-11.97, 12.53], [-11.75, 12.0], [-11.97, 11.47], [-12.5, 11.25], [-12.75, 11.35], [-12.82, 11.32], [-12.85, 11.25], [-12.75, 11.0], [-12.85, 10.75], [-12.75, 10.5], [-12.97, 9.97], [-13.5, 9.75], [-14.03, 9.97], [-14.18, 10.32], [-14.53, 10.47], [-14.75, 11.0], [-14.65, 11.25], [-14.68, 11.32], [-14.75, 11.35], [-15.0, 11.25], [-15.53, 11.47], [-15.75, 12.0], [-15.65, 12.25], [-15.75, 12.5], [-15.53, 13.03]]]]}, "2013-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.53, 13.03], [-15.0, 13.25], [-14.47, 13.03], [-14.32, 12.68], [-14.0, 12.54], [-13.68, 12.68], [-13.53, 13.03], [-13.0, 13.25], [-12.75, 13.15], [-12.5, 13.25], [-11.97, 13.03], [-11.82, 12.68], [-11.75, 12.65], [-11.5, 12.75], [-10.97, 12.53], [-10.75, 12.0], [-10.97, 11.47], [-11.32, 11.32], [-11.35, 11.25], [-11.25, 11.0], [-11.47, 10.47], [-12.0, 10.25], [-12.25, 10.35], [-12.32, 10.32], [-12.47, 9.97], [-13.0, 9.75], [-13.25, 9.85], [-13.5, 9.75], [-14.03, 9.97], [-14.18, 10.32], [-14.53, 10.47], [-14.75, 11.0], [-14.65, 11.25], [-14.68, 11.32], [-14.75, 11.35], [-15.0, 11.25], [-15.53, 11.47], [-15.75, 12.0], [-15.65, 12.25], [-15.75, 12.5], [-15.53, 13.03]]]]}, "2013-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.53, 13.03], [-15.0, 13.25], [-14.47, 13.03], [-14.32, 12.68], [-14.0, 12.54], [-13.68, 12.68], [-13.53, 13.03], [-13.0, 13.25], [-12.75, 13.15], [-12.5, 13.25], [-11.97, 13.03], [-11.82, 12.68], [-11.75, 12.65], [-11.5, 12.75], [-10.97, 12.53], [-10.75, 12.0], [-10.97, 11.47], [-11.32, 11.32], [-11.35, 11.25], [-11.25, 11.0], [-11.47, 10.47], [-12.0, 10.25], [-12.25, 10.35], [-12.32, 10.32], [-12.47, 9.97], [-13.0, 9.75], [-13.25, 9.85], [-13.5, 9.75], [-14.03, 9.97], [-14.18, 10.32], [-14.53, 10.47], [-14.75, 11.0], [-14.65, 11.25], [-14.68, 11.32], [-14.75, 11.35], [-15.0, 11.25], [-15.53, 11.47], [-15.75, 12.0], [-15.65, 12.25], [-15.75, 12.5], [-15.53, 13.03]]]]}, "2013-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.75, 11.5], [-14.53, 12.03], [-14.18, 12.18], [-14.03, 12.53], [-13.68, 12.68], [-13.53, 13.03], [-13.0, 13.25], [-12.75, 13.15], [-12.5, 13.25], [-11.97, 13.03], [-11.82, 12.68], [-11.75, 12.65], [-11.5, 12.75], [-10.97, 12.53], [-10.75, 12.0], [-10.97, 11.47], [-11.32, 11.32], [-11.35, 11.25], [-11.25, 11.0], [-11.47, 10.47], [-12.0, 10.25], [-12.25, 10.35], [-12.32, 10.32], [-12.47, 9.97], [-13.0, 9.75], [-13.25, 9.85], [-13.5, 9.75], [-14.03, 9.97], [-14.25, 10.5], [-14.15, 10.75], [-14.18, 10.82], [-14.53, 10.97], [-14.75, 11.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.635439053137077}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3027808658654623}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.545463141725463, 24.74321283310809, 23.973109736598758, 23.06982280127852, 23.653102155710485]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.51551542483668, 23.36608449717545, 21.652720680283608, 20.000102883211355, 20.89215499456253]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9846815745087554, -1.7260810938114683, -2.0245330707093103, -3.0266101587354437, -2.2891032490686345]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.01017544718718, -2.0426915493407023, -3.1421789986075055, -4.635439053137077, -3.139243669466225]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2875751364867494, -1.6352050509232139, -1.6953924601640509, -2.5871630469230147, -1.9449618243759705]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3667629540140245, -2.0495042817302505, -2.2608697943442193, -3.5515238523087422, -2.4503730727594517]}}