{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:49.488775", "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-May-18_to_2020-May-20_25.0_-14.0"}, "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": 2020050000470}, "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 18 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 20 2020"}, "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": 56974.72531725022}, "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": ["Angola", "Zambia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "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": -14.0}, "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": 25.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.32, -13.18], [22.97, -13.03], [22.75, -12.5], [22.97, -11.97], [23.5, -11.75], [24.03, -11.97], [24.18, -12.32], [24.25, -12.35], [24.5, -12.25], [25.03, -12.47], [25.18, -12.82], [25.53, -12.97], [25.68, -13.32], [25.75, -13.35], [26.0, -13.25], [26.53, -13.47], [26.68, -13.82], [27.03, -13.97], [27.25, -14.5], [27.03, -15.03], [26.5, -15.25], [26.0, -15.04], [25.68, -15.18], [25.53, -15.53], [25.18, -15.68], [25.03, -16.03], [24.5, -16.25], [23.97, -16.03], [23.75, -15.5], [23.85, -15.25], [23.75, -15.0], [23.85, -14.75], [23.82, -14.68], [23.75, -14.65], [23.5, -14.75], [22.97, -14.53], [22.75, -14.0], [22.97, -13.47], [23.32, -13.32], [23.35, -13.25], [23.32, -13.18]]]]}, "2020-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.32, -13.18], [22.97, -13.03], [22.75, -12.5], [22.97, -11.97], [23.5, -11.75], [24.03, -11.97], [24.18, -12.32], [24.25, -12.35], [24.5, -12.25], [25.03, -12.47], [25.18, -12.82], [25.53, -12.97], [25.68, -13.32], [25.75, -13.35], [26.0, -13.25], [26.53, -13.47], [26.68, -13.82], [27.03, -13.97], [27.25, -14.5], [27.03, -15.03], [26.5, -15.25], [26.0, -15.04], [25.68, -15.18], [25.53, -15.53], [25.18, -15.68], [25.03, -16.03], [24.5, -16.25], [23.97, -16.03], [23.75, -15.5], [23.85, -15.25], [23.75, -15.0], [23.85, -14.75], [23.82, -14.68], [23.75, -14.65], [23.5, -14.75], [22.97, -14.53], [22.75, -14.0], [22.97, -13.47], [23.32, -13.32], [23.35, -13.25], [23.32, -13.18]]]]}, "2020-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.32, -13.18], [22.97, -13.03], [22.75, -12.5], [22.97, -11.97], [23.5, -11.75], [24.03, -11.97], [24.18, -12.32], [24.25, -12.35], [24.5, -12.25], [25.03, -12.47], [25.18, -12.82], [25.53, -12.97], [25.68, -13.32], [25.75, -13.35], [26.0, -13.25], [26.53, -13.47], [26.68, -13.82], [27.03, -13.97], [27.25, -14.5], [27.03, -15.03], [26.5, -15.25], [26.0, -15.04], [25.68, -15.18], [25.53, -15.53], [25.18, -15.68], [25.03, -16.03], [24.5, -16.25], [23.97, -16.03], [23.75, -15.5], [23.85, -15.25], [23.75, -15.0], [23.85, -14.75], [23.82, -14.68], [23.75, -14.65], [23.5, -14.75], [22.97, -14.53], [22.75, -14.0], [22.97, -13.47], [23.32, -13.32], [23.35, -13.25], [23.32, -13.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4952926533717346}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9880401374168442}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.48730120066722, 18.49078653336545, 18.741149598859067]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.21620942911528, 17.402349265963892, 17.611345634502925]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.10983163370854, -2.07411738902999, -1.7801713895120022]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4952926533717346, -2.2958923756253853, -2.0093406756694208]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7158419094386685, -1.6836483695078814, -1.4402257424721174]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9642697544899759, -1.8566555079798084, -1.5898743408999756]}}