{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:10.457039", "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-Aug-21_to_2012-Aug-24_0.5_29.0"}, "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": 2012080001008}, "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": "August 21 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 24 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": 73120.8063202132}, "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": ["Algeria"]}, "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": 29.0}, "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": 0.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "0.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -1.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 3.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.32, 29.18], [1.47, 29.53], [2.0, 29.75], [2.53, 29.53], [2.68, 29.18], [2.75, 29.15], [3.0, 29.25], [3.53, 29.03], [3.75, 28.5], [3.65, 28.25], [3.75, 28.0], [3.53, 27.47], [3.0, 27.25], [2.75, 27.35], [2.5, 27.25], [2.25, 27.35], [2.0, 27.25], [1.5, 27.46], [1.0, 27.25], [0.47, 27.47], [0.25, 28.0], [0.47, 28.53], [0.82, 28.68], [0.97, 29.03], [1.32, 29.18]]]]}, "2012-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.53, 29.53], [-1.18, 29.68], [-1.03, 30.03], [-0.68, 30.18], [-0.53, 30.53], [0.0, 30.75], [0.5, 30.54], [1.0, 30.75], [1.25, 30.65], [1.5, 30.75], [2.03, 30.53], [2.25, 30.0], [2.13, 29.7], [2.53, 29.53], [2.68, 29.18], [2.75, 29.15], [3.0, 29.25], [3.53, 29.03], [3.75, 28.5], [3.65, 28.25], [3.75, 28.0], [3.53, 27.47], [3.0, 27.25], [2.75, 27.35], [2.5, 27.25], [2.25, 27.35], [2.0, 27.25], [1.5, 27.46], [1.0, 27.25], [0.5, 27.46], [0.0, 27.25], [-0.25, 27.35], [-0.5, 27.25], [-1.03, 27.47], [-1.18, 27.82], [-1.53, 27.97], [-1.75, 28.5], [-1.65, 28.75], [-1.75, 29.0], [-1.53, 29.53]]]]}, "2012-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.53, 29.53], [-1.18, 29.68], [-1.03, 30.03], [-0.68, 30.18], [-0.53, 30.53], [0.0, 30.75], [0.5, 30.54], [1.0, 30.75], [1.25, 30.65], [1.5, 30.75], [2.03, 30.53], [2.25, 30.0], [2.13, 29.7], [2.53, 29.53], [2.68, 29.18], [2.75, 29.15], [3.0, 29.25], [3.53, 29.03], [3.75, 28.5], [3.65, 28.25], [3.75, 28.0], [3.53, 27.47], [3.0, 27.25], [2.75, 27.35], [2.5, 27.25], [2.25, 27.35], [2.0, 27.25], [1.5, 27.46], [1.0, 27.25], [0.5, 27.46], [0.0, 27.25], [-0.25, 27.35], [-0.5, 27.25], [-1.03, 27.47], [-1.18, 27.82], [-1.53, 27.97], [-1.75, 28.5], [-1.65, 28.75], [-1.75, 29.0], [-1.53, 29.53]]]]}, "2012-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.53, 29.53], [-1.18, 29.68], [-1.03, 30.03], [-0.68, 30.18], [-0.53, 30.53], [0.0, 30.75], [0.5, 30.54], [1.0, 30.75], [1.25, 30.65], [1.5, 30.75], [2.03, 30.53], [2.25, 30.0], [2.03, 29.47], [1.68, 29.32], [1.65, 29.25], [1.75, 29.0], [1.53, 28.47], [1.18, 28.32], [1.03, 27.97], [0.68, 27.82], [0.53, 27.47], [0.0, 27.25], [-0.25, 27.35], [-0.5, 27.25], [-1.03, 27.47], [-1.18, 27.82], [-1.53, 27.97], [-1.75, 28.5], [-1.65, 28.75], [-1.75, 29.0], [-1.53, 29.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1826295519499013}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6398113118807847}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.85525633837557, 33.180844844540104, 32.780354390634045, 33.224390117462974]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.397889298740722, 31.40990178782289, 31.082311200144602, 31.407899706309138]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.608109104682904, -2.554807344852777, -2.8392304904671524, -2.4840395981421843]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8805675798110997, -2.901772796335365, -3.1826295519499013, -2.684282127636834]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5771830842340242, -1.5854841415555516, -1.7365331401056372, -1.5825397872439868]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6447165623623847, -1.7701299045497525, -2.0092558414400914, -1.72512769152267]}}