{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:29:19.419032", "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": "2022-Feb-19_to_2022-Feb-21_35.5_18.5"}, "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": 2022020000767}, "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": "February 19 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 21 2022"}, "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": 186022.8003780973}, "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": ["N.Eastern-Africa", "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": 18.5}, "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": 35.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.85, 16.25], [31.75, 16.5], [31.85, 16.75], [31.75, 17.0], [31.85, 17.25], [31.75, 17.5], [31.97, 18.03], [32.32, 18.18], [32.47, 18.53], [33.0, 18.75], [33.25, 18.65], [33.5, 18.75], [33.75, 18.65], [33.82, 18.68], [33.85, 18.75], [33.75, 19.0], [33.97, 19.53], [34.32, 19.68], [34.35, 19.75], [34.25, 20.0], [34.47, 20.53], [34.82, 20.68], [34.97, 21.03], [35.5, 21.25], [35.75, 21.15], [36.0, 21.25], [36.53, 21.03], [36.75, 20.5], [36.65, 20.25], [36.75, 20.0], [36.65, 19.75], [36.75, 19.5], [36.65, 19.25], [36.75, 19.0], [36.65, 18.75], [36.75, 18.5], [36.65, 18.25], [36.75, 18.0], [36.65, 17.75], [36.75, 17.5], [36.65, 17.25], [36.75, 17.0], [36.53, 16.47], [36.18, 16.32], [36.15, 16.25], [36.25, 16.0], [36.15, 15.75], [36.25, 15.5], [36.03, 14.97], [35.68, 14.82], [35.65, 14.75], [35.75, 14.5], [35.53, 13.97], [35.0, 13.75], [34.47, 13.97], [34.32, 14.32], [34.25, 14.35], [34.0, 14.25], [33.75, 14.35], [33.5, 14.25], [33.25, 14.35], [33.0, 14.25], [32.47, 14.47], [32.32, 14.82], [31.97, 14.97], [31.75, 15.5], [31.85, 15.75], [31.75, 16.0], [31.85, 16.25]]]]}, "2022-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.85, 16.25], [31.75, 16.5], [31.85, 16.75], [31.75, 17.0], [31.85, 17.25], [31.75, 17.5], [31.97, 18.03], [32.32, 18.18], [32.47, 18.53], [33.0, 18.75], [33.25, 18.65], [33.5, 18.75], [33.75, 18.65], [33.82, 18.68], [33.85, 18.75], [33.75, 19.0], [33.97, 19.53], [34.32, 19.68], [34.35, 19.75], [34.25, 20.0], [34.47, 20.53], [34.82, 20.68], [34.97, 21.03], [35.5, 21.25], [35.75, 21.15], [36.0, 21.25], [36.53, 21.03], [36.75, 20.5], [36.65, 20.25], [36.75, 20.0], [36.65, 19.75], [36.75, 19.5], [36.65, 19.25], [36.75, 19.0], [36.65, 18.75], [36.75, 18.5], [36.65, 18.25], [36.75, 18.0], [36.65, 17.75], [36.75, 17.5], [36.65, 17.25], [36.75, 17.0], [36.53, 16.47], [36.18, 16.32], [36.15, 16.25], [36.25, 16.0], [36.15, 15.75], [36.25, 15.5], [36.03, 14.97], [35.68, 14.82], [35.65, 14.75], [35.75, 14.5], [35.53, 13.97], [35.0, 13.75], [34.47, 13.97], [34.32, 14.32], [34.25, 14.35], [34.0, 14.25], [33.75, 14.35], [33.5, 14.25], [33.25, 14.35], [33.0, 14.25], [32.47, 14.47], [32.32, 14.82], [31.97, 14.97], [31.75, 15.5], [31.85, 15.75], [31.75, 16.0], [31.85, 16.25]]]]}, "2022-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.85, 16.25], [31.75, 16.5], [31.85, 16.75], [31.75, 17.0], [31.85, 17.25], [31.75, 17.5], [31.97, 18.03], [32.32, 18.18], [32.47, 18.53], [33.0, 18.75], [33.25, 18.65], [33.5, 18.75], [33.75, 18.65], [33.82, 18.68], [33.85, 18.75], [33.75, 19.0], [33.97, 19.53], [34.32, 19.68], [34.35, 19.75], [34.25, 20.0], [34.47, 20.53], [34.82, 20.68], [34.97, 21.03], [35.5, 21.25], [35.75, 21.15], [36.0, 21.25], [36.53, 21.03], [36.75, 20.5], [36.65, 20.25], [36.75, 20.0], [36.65, 19.75], [36.75, 19.5], [36.65, 19.25], [36.75, 19.0], [36.65, 18.75], [36.75, 18.5], [36.65, 18.25], [36.75, 18.0], [36.65, 17.75], [36.75, 17.5], [36.65, 17.25], [36.75, 17.0], [36.53, 16.47], [36.18, 16.32], [36.15, 16.25], [36.25, 16.0], [36.15, 15.75], [36.25, 15.5], [36.03, 14.97], [35.68, 14.82], [35.65, 14.75], [35.75, 14.5], [35.53, 13.97], [35.0, 13.75], [34.47, 13.97], [34.32, 14.32], [34.25, 14.35], [34.0, 14.25], [33.75, 14.35], [33.5, 14.25], [33.25, 14.35], [33.0, 14.25], [32.47, 14.47], [32.32, 14.82], [31.97, 14.97], [31.75, 15.5], [31.85, 15.75], [31.75, 16.0], [31.85, 16.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.81029908001716}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.655134848135625}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.307547480956657, 19.785080827528418, 20.773238207258203]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.957687703075123, 15.842704337615544, 17.48556530182401]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.468255619384047, -5.165589013071028, -4.331559911951806]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.631449871988082, -5.81029908001716, -4.7188598426267845]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5023720003669543, -1.7368404656584808, -1.460794155348915]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8717300383308804, -2.0263294359703474, -1.726329682018704]}}