{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:21.666814", "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": "2014-May-03_to_2014-May-06_349.0_11.5"}, "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": 2014050000199}, "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": "May 03 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 06 2014"}, "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": 84912.60128252745}, "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", "Mali"]}, "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": 11.5}, "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": 349.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "349.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 345.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.5, 11.75], [-12.25, 11.65], [-12.18, 11.68], [-12.03, 12.03], [-11.5, 12.25], [-11.25, 12.15], [-11.0, 12.25], [-10.75, 12.15], [-10.68, 12.18], [-10.53, 12.53], [-10.0, 12.75], [-9.75, 12.65], [-9.68, 12.68], [-9.65, 12.75], [-9.75, 13.0], [-9.53, 13.53], [-9.0, 13.75], [-8.47, 13.53], [-8.25, 13.0], [-8.35, 12.75], [-8.25, 12.5], [-8.35, 12.25], [-8.25, 12.0], [-8.47, 11.47], [-8.82, 11.32], [-8.85, 11.25], [-8.75, 11.0], [-8.97, 10.47], [-9.32, 10.32], [-9.35, 10.25], [-9.25, 10.0], [-9.47, 9.47], [-10.0, 9.25], [-10.53, 9.47], [-10.68, 9.82], [-10.75, 9.85], [-11.0, 9.75], [-11.25, 9.85], [-11.5, 9.75], [-11.75, 9.85], [-12.0, 9.75], [-12.25, 9.85], [-12.5, 9.75], [-12.75, 9.85], [-13.0, 9.75], [-13.53, 9.97], [-13.75, 10.5], [-13.53, 11.03], [-13.18, 11.18], [-13.03, 11.53], [-12.5, 11.75]]]]}, "2014-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.5, 11.75], [-13.25, 11.65], [-13.0, 11.75], [-12.75, 11.65], [-12.5, 11.75], [-12.25, 11.65], [-12.18, 11.68], [-12.03, 12.03], [-11.5, 12.25], [-11.25, 12.15], [-11.0, 12.25], [-10.75, 12.15], [-10.68, 12.18], [-10.53, 12.53], [-10.0, 12.75], [-9.75, 12.65], [-9.68, 12.68], [-9.65, 12.75], [-9.75, 13.0], [-9.53, 13.53], [-9.0, 13.75], [-8.47, 13.53], [-8.25, 13.0], [-8.35, 12.75], [-8.25, 12.5], [-8.35, 12.25], [-8.25, 12.0], [-8.47, 11.47], [-8.82, 11.32], [-8.85, 11.25], [-8.75, 11.0], [-8.97, 10.47], [-9.32, 10.32], [-9.35, 10.25], [-9.25, 10.0], [-9.47, 9.47], [-10.0, 9.25], [-10.53, 9.47], [-10.68, 9.82], [-10.75, 9.85], [-11.0, 9.75], [-11.25, 9.85], [-11.5, 9.75], [-11.75, 9.85], [-12.0, 9.75], [-12.25, 9.85], [-12.5, 9.75], [-12.75, 9.85], [-13.0, 9.75], [-13.5, 9.96], [-14.0, 9.75], [-14.53, 9.97], [-14.75, 10.5], [-14.53, 11.03], [-14.18, 11.18], [-14.03, 11.53], [-13.5, 11.75]]]]}, "2014-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.5, 11.75], [-13.25, 11.65], [-13.0, 11.75], [-12.75, 11.65], [-12.5, 11.75], [-12.25, 11.65], [-12.18, 11.68], [-12.03, 12.03], [-11.5, 12.25], [-11.25, 12.15], [-11.0, 12.25], [-10.75, 12.15], [-10.68, 12.18], [-10.53, 12.53], [-10.0, 12.75], [-9.75, 12.65], [-9.68, 12.68], [-9.65, 12.75], [-9.75, 13.0], [-9.53, 13.53], [-9.0, 13.75], [-8.47, 13.53], [-8.25, 13.0], [-8.35, 12.75], [-8.25, 12.5], [-8.35, 12.25], [-8.25, 12.0], [-8.47, 11.47], [-8.82, 11.32], [-8.85, 11.25], [-8.75, 11.0], [-8.97, 10.47], [-9.32, 10.32], [-9.35, 10.25], [-9.25, 10.0], [-9.47, 9.47], [-10.0, 9.25], [-10.53, 9.47], [-10.68, 9.82], [-10.75, 9.85], [-11.0, 9.75], [-11.25, 9.85], [-11.5, 9.75], [-11.75, 9.85], [-12.0, 9.75], [-12.25, 9.85], [-12.5, 9.75], [-12.75, 9.85], [-13.0, 9.75], [-13.5, 9.96], [-14.0, 9.75], [-14.53, 9.97], [-14.75, 10.5], [-14.53, 11.03], [-14.18, 11.18], [-14.03, 11.53], [-13.5, 11.75]]]]}, "2014-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.5, 11.75], [-13.25, 11.65], [-13.0, 11.75], [-12.75, 11.65], [-12.5, 11.75], [-12.25, 11.65], [-12.18, 11.68], [-12.03, 12.03], [-11.5, 12.25], [-11.25, 12.15], [-11.0, 12.25], [-10.75, 12.15], [-10.68, 12.18], [-10.53, 12.53], [-10.0, 12.75], [-9.47, 12.53], [-9.25, 12.0], [-9.47, 11.47], [-9.82, 11.32], [-9.97, 10.97], [-10.32, 10.82], [-10.47, 10.47], [-10.82, 10.32], [-10.97, 9.97], [-11.5, 9.75], [-11.75, 9.85], [-12.0, 9.75], [-12.53, 9.97], [-12.68, 10.32], [-12.75, 10.35], [-13.0, 10.25], [-13.25, 10.35], [-13.32, 10.32], [-13.47, 9.97], [-14.0, 9.75], [-14.53, 9.97], [-14.75, 10.5], [-14.53, 11.03], [-14.18, 11.18], [-14.03, 11.53], [-13.5, 11.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.132726989093499}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.8494658248855163}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.19251810964448, 27.3798408847735, 25.57037254896369, 26.65574082024284]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.842989063789275, 23.173763763872614, 21.41764903098209, 23.450023376537217]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.66422329081744, -2.2542987417180496, -4.014204898598848, -1.978931026148416]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.7500636734058617, -2.8842103743286884, -5.132726989093499, -2.807011131795548]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0584915256359317, -1.808913720005078, -3.1311216989265445, -1.5697597275260264]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.1262410120714854, -2.565960474608781, -3.9053528697416375, -2.0144379947375732]}}