{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:39.299361", "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": "2012-Jun-12_to_2012-Jun-15_353.5_14.5"}, "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": 2012060000593}, "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 12 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 15 2012"}, "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": 332941.1465865136}, "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": ["Burkina Faso", "Mali", "Mauritania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "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": 14.5}, "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": 353.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 350.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 359.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.75, 12.5], [-9.53, 13.03], [-9.18, 13.18], [-9.03, 13.53], 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[-6.68, 10.82], [-7.0, 10.96], [-7.5, 10.75], [-7.75, 10.85], [-8.0, 10.75], [-8.25, 10.85], [-8.5, 10.75], [-9.03, 10.97], [-9.25, 11.5], [-9.15, 11.75], [-9.18, 11.82], [-9.53, 11.97], [-9.75, 12.5]]]]}, "2012-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.75, 12.5], [-9.53, 13.03], [-9.18, 13.18], [-9.03, 13.53], [-8.68, 13.68], [-8.65, 13.75], [-8.68, 13.82], [-8.75, 13.85], [-9.0, 13.75], [-9.53, 13.97], [-9.75, 14.5], [-9.53, 15.03], [-9.18, 15.18], [-9.03, 15.53], [-8.5, 15.75], [-8.25, 15.65], [-8.0, 15.75], [-7.75, 15.65], [-7.68, 15.68], [-7.53, 16.03], [-7.0, 16.25], [-6.75, 16.15], [-6.5, 16.25], [-6.25, 16.15], [-6.0, 16.25], [-5.75, 16.15], [-5.5, 16.25], [-5.25, 16.15], [-5.18, 16.18], [-5.03, 16.53], [-4.5, 16.75], [-4.0, 16.54], [-3.68, 16.68], [-3.53, 17.03], [-3.0, 17.25], [-2.75, 17.15], [-2.5, 17.25], [-2.25, 17.15], [-2.0, 17.25], [-1.75, 17.15], [-1.5, 17.25], [-0.97, 17.03], [-0.82, 16.68], [-0.47, 16.53], [-0.25, 16.0], [-0.47, 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[-8.25, 10.85], [-8.5, 10.75], [-9.03, 10.97], [-9.25, 11.5], [-9.15, 11.75], [-9.18, 11.82], [-9.53, 11.97], [-9.75, 12.5]]]]}, "2012-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.5, 15.75], [-8.25, 15.65], [-8.0, 15.75], [-7.75, 15.65], [-7.5, 15.75], [-7.25, 15.65], [-7.0, 15.75], [-6.75, 15.65], [-6.5, 15.75], [-5.97, 15.53], [-5.75, 15.0], [-5.85, 14.75], [-5.75, 14.5], [-5.97, 13.97], [-6.5, 13.75], [-6.75, 13.85], [-7.0, 13.75], [-7.25, 13.85], [-7.5, 13.75], [-7.75, 13.85], [-8.0, 13.75], [-8.25, 13.85], [-8.5, 13.75], [-8.75, 13.85], [-9.0, 13.75], [-9.53, 13.97], [-9.75, 14.5], [-9.53, 15.03], [-9.18, 15.18], [-9.03, 15.53], [-8.5, 15.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.707750882316816}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0801506032433807}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.897431384673325, 29.232255417472686, 28.642591702781715, 30.923960589205535]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.47857537467047, 25.11614425993156, 24.323167958888178, 30.017704115721756]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.130662739326374, -2.7981278918706955, -3.3570641471983866, -2.6495454482114424]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.5885391195207035, -4.436341885614411, -5.707750882316816, -3.0430244976715244]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0661509602295696, -1.883444510804417, -2.2506428204545106, -1.6124765215483814]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.0355568124442085, -2.485755790753647, -3.3855025217218437, -1.766043064747615]}}