{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:07.092949", "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": "2017-Oct-09_to_2017-Oct-11_16.0_-19.0"}, "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": 2017100000280}, "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": "October 09 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 11 2017"}, "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": 55534.760702857944}, "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": ["Namibia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-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": -19.0}, "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": 16.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.5, -17.25], [14.75, -17.35], [15.0, -17.25], [15.25, -17.35], [15.5, -17.25], [16.03, -17.47], [16.18, -17.82], [16.25, -17.85], [16.5, -17.75], [17.03, -17.97], [17.25, -18.5], [17.15, -18.75], [17.25, -19.0], [17.15, -19.25], [17.25, -19.5], [17.15, -19.75], [17.25, -20.0], [17.15, -20.25], [17.25, -20.5], [17.03, -21.03], [16.5, -21.25], [16.25, -21.15], [16.0, -21.25], [15.47, -21.03], [15.25, -20.5], [15.38, -20.2], [14.97, -20.03], [14.82, -19.68], [14.47, -19.53], [14.32, -19.18], [14.25, -19.15], [14.0, -19.25], [13.47, -19.03], [13.25, -18.5], [13.47, -17.97], [13.82, -17.82], [13.97, -17.47], [14.5, -17.25]]]]}, "2017-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.5, -17.25], [14.75, -17.35], [15.0, -17.25], [15.25, -17.35], [15.5, -17.25], [16.03, -17.47], [16.18, -17.82], [16.25, -17.85], [16.5, -17.75], [17.03, -17.97], [17.25, -18.5], [17.15, -18.75], [17.25, -19.0], [17.15, -19.25], [17.25, -19.5], [17.15, -19.75], [17.25, -20.0], [17.15, -20.25], [17.25, -20.5], [17.03, -21.03], [16.5, -21.25], [16.25, -21.15], [16.0, -21.25], [15.47, -21.03], [15.25, -20.5], [15.38, -20.2], [14.97, -20.03], [14.82, -19.68], [14.47, -19.53], [14.32, -19.18], [14.25, -19.15], [14.0, -19.25], [13.47, -19.03], [13.25, -18.5], [13.47, -17.97], [13.82, -17.82], [13.97, -17.47], [14.5, -17.25]]]]}, "2017-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.5, -17.25], [14.75, -17.35], [15.0, -17.25], [15.25, -17.35], [15.5, -17.25], [16.03, -17.47], [16.18, -17.82], [16.25, -17.85], [16.5, -17.75], [17.03, -17.97], [17.25, -18.5], [17.15, -18.75], [17.25, -19.0], [17.15, -19.25], [17.25, -19.5], [17.15, -19.75], [17.25, -20.0], [17.15, -20.25], [17.25, -20.5], [17.03, -21.03], [16.5, -21.25], [16.25, -21.15], [16.0, -21.25], [15.47, -21.03], [15.25, -20.5], [15.38, -20.2], [14.97, -20.03], [14.82, -19.68], [14.47, -19.53], [14.32, -19.18], [14.25, -19.15], [14.0, -19.25], [13.47, -19.03], [13.25, -18.5], [13.47, -17.97], [13.82, -17.82], [13.97, -17.47], [14.5, -17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.542174774990201}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.531565096728067}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.186114749055093, 22.451275809673575, 23.836033412804625]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.196924022033386, 19.88693191663134, 20.757199245131574]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.525279739897395, -4.24011125080994, -2.8293042994768656]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.542174774990201, -4.871425187141426, -3.2770765003051565]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7727269816077822, -2.1962639061525486, -1.4404783506741605]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.349758251076988, -2.5264708365890476, -1.6612175254127122]}}