{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:18.416548", "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-Sep-21_to_2014-Sep-23_31.5_19.5"}, "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": 2014090000784}, "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": "September 21 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 23 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 82081.12325121742}, "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": ["Sudan"]}, "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": 19.5}, "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": 31.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "31.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 27.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 32.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.97, 19.03], [27.5, 19.25], [27.75, 19.15], [28.0, 19.25], 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[29.47, 20.03], [30.0, 20.25], [30.5, 20.04], [31.0, 20.25], [31.25, 20.15], [31.32, 20.18], [31.47, 20.53], [32.0, 20.75], [32.53, 20.53], [32.75, 20.0], [32.53, 19.47], [32.18, 19.32], [32.15, 19.25], [32.18, 19.18], [32.53, 19.03], [32.75, 18.5], [32.53, 17.97], [32.0, 17.75], [31.75, 17.85], [31.68, 17.82], [31.65, 17.75], [31.75, 17.5], [31.53, 16.97], [31.0, 16.75], [30.75, 16.85], [30.5, 16.75], [30.25, 16.85], [30.0, 16.75], [29.47, 16.97], [29.32, 17.32], [29.25, 17.35], [29.0, 17.25], [28.75, 17.35], [28.5, 17.25], [28.25, 17.35], [28.0, 17.25], [27.75, 17.35], [27.5, 17.25], [26.97, 17.47], [26.75, 18.0], [26.85, 18.25], [26.75, 18.5], [26.97, 19.03]]]]}, "2014-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.97, 19.03], [27.5, 19.25], [27.75, 19.15], [28.0, 19.25], [28.5, 19.04], [29.0, 19.25], [29.25, 19.15], [29.32, 19.18], [29.35, 19.25], [29.25, 19.5], [29.47, 20.03], [30.0, 20.25], [30.5, 20.04], [31.0, 20.25], [31.25, 20.15], [31.32, 20.18], [31.47, 20.53], [32.0, 20.75], [32.53, 20.53], [32.75, 20.0], [32.53, 19.47], [32.18, 19.32], [32.15, 19.25], [32.18, 19.18], [32.53, 19.03], [32.75, 18.5], [32.53, 17.97], [32.0, 17.75], [31.75, 17.85], [31.68, 17.82], [31.65, 17.75], [31.75, 17.5], [31.53, 16.97], [31.0, 16.75], [30.75, 16.85], [30.5, 16.75], [30.25, 16.85], [30.0, 16.75], [29.47, 16.97], [29.32, 17.32], [29.25, 17.35], [29.0, 17.25], [28.75, 17.35], [28.5, 17.25], [28.25, 17.35], [28.0, 17.25], [27.75, 17.35], [27.5, 17.25], [26.97, 17.47], [26.75, 18.0], [26.85, 18.25], [26.75, 18.5], [26.97, 19.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.015924412733284}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.783984157171774}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.54060962921608, 29.54328170536138, 30.62723696858825]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.357443895512176, 26.033244092749953, 27.225001184793484]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.502225582672738, -3.486550306748027, -2.363176582094557]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.308578397094152, -4.015924412733284, -2.652809372618208]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6043410571189358, -2.1861133538227464, -1.4436080711008068]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9916519620166333, -2.2921350731447463, -1.5720193639850728]}}