{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:10.135499", "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": "2020-Mar-22_to_2020-Mar-25_23.5_-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": 2020030000557}, "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": "March 22 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 25 2020"}, "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": 79014.17488745632}, "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": ["Botswana", "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.75}, "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": {"2020-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.5, -17.75], [22.03, -17.97], [22.25, -18.5], [22.03, -19.03], [21.5, -19.25], [20.97, -19.03], [20.75, -18.5], [20.97, -17.97], [21.5, -17.75]]]]}, "2020-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, -17.47], [20.0, -17.25], [20.53, -17.47], [20.68, -17.82], [20.75, -17.85], [21.0, -17.75], [21.25, -17.85], [21.32, -17.82], [21.47, -17.47], [22.0, -17.25], [22.25, -17.35], [22.5, -17.25], [22.75, -17.35], [23.0, -17.25], [23.53, -17.47], [23.68, -17.82], [23.75, -17.85], [24.0, -17.75], [24.53, -17.97], [24.68, -18.32], [25.03, -18.47], [25.25, -19.0], [25.03, -19.53], [24.68, -19.68], [24.53, -20.03], [24.0, -20.25], [23.75, -20.15], [23.5, -20.25], [23.25, -20.15], [23.0, -20.25], [22.75, -20.15], [22.5, -20.25], [22.0, -20.04], [21.5, -20.25], [20.97, -20.03], [20.82, -19.68], [20.75, -19.65], [20.5, -19.75], [19.97, -19.53], [19.82, -19.18], [19.47, -19.03], [19.25, -18.5], [19.35, -18.25], [19.25, -18.0], [19.47, -17.47]]]]}, "2020-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, -17.47], [20.0, -17.25], [20.53, -17.47], [20.68, -17.82], [20.75, -17.85], [21.0, -17.75], [21.25, -17.85], [21.32, -17.82], [21.47, -17.47], [22.0, -17.25], [22.25, -17.35], [22.5, -17.25], [22.75, -17.35], [23.0, -17.25], [23.53, -17.47], [23.68, -17.82], [23.75, -17.85], [24.0, -17.75], [24.53, -17.97], [24.68, -18.32], [25.03, -18.47], [25.25, -19.0], [25.03, -19.53], [24.68, -19.68], [24.53, -20.03], [24.0, -20.25], [23.75, -20.15], [23.5, -20.25], [23.25, -20.15], [23.0, -20.25], [22.75, -20.15], [22.5, -20.25], [22.0, -20.04], [21.5, -20.25], [20.97, -20.03], [20.82, -19.68], [20.75, -19.65], [20.5, -19.75], [19.97, -19.53], [19.82, -19.18], [19.47, -19.03], [19.25, -18.5], [19.35, -18.25], [19.25, -18.0], [19.47, -17.47]]]]}, "2020-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, -17.47], [20.0, -17.25], [20.53, -17.47], [20.68, -17.82], [20.75, -17.85], [21.0, -17.75], [21.25, -17.85], [21.32, -17.82], [21.47, -17.47], [22.0, -17.25], [22.25, -17.35], [22.5, -17.25], [22.75, -17.35], [23.0, -17.25], [23.53, -17.47], [23.68, -17.82], [23.75, -17.85], [24.0, -17.75], [24.53, -17.97], [24.68, -18.32], [25.03, -18.47], [25.25, -19.0], [25.03, -19.53], [24.68, -19.68], [24.53, -20.03], [24.0, -20.25], [23.75, -20.15], [23.5, -20.25], [23.25, -20.15], [23.0, -20.25], [22.75, -20.15], [22.5, -20.25], [22.0, -20.04], [21.5, -20.25], [20.97, -20.03], [20.82, -19.68], [20.75, -19.65], [20.5, -19.75], [19.97, -19.53], [19.82, -19.18], [19.47, -19.03], [19.25, -18.5], [19.35, -18.25], [19.25, -18.0], [19.47, -17.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.793953427380529}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0790587882561513}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.99220984053312, 21.126535914942167, 20.714964230508883, 21.81326849496554]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.99220984053312, 20.25912122931493, 19.960141574552154, 20.690502982616295]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9625324846537637, -3.2433857745617285, -3.603645825845869, -2.431497590420204]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9625324846537637, -4.793953427380529, -4.687698156957026, -3.0834632788893828]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.134304323877478, -1.8104003233174282, -2.012369541894126, -1.3815907858285659]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.134304323877478, -2.8106680827357424, -2.558439884189046, -1.781229100971456]}}