{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:37.900552", "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": "2021-Oct-20_to_2021-Oct-22_38.5_9.0"}, "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": 2021100000659}, "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 20 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 22 2021"}, "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": 76095.32183023465}, "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": ["Ethiopia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-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": 9.0}, "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": 38.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "38.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 37.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 39.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, 9.0], [36.97, 9.53], [37.32, 9.68], [37.35, 9.75], [37.25, 10.0], [37.47, 10.53], [37.82, 10.68], [37.88, 10.8], [37.47, 10.97], [37.25, 11.5], [37.46, 12.0], [37.25, 12.5], [37.47, 13.03], [38.0, 13.25], [38.25, 13.15], [38.5, 13.25], [39.03, 13.03], [39.25, 12.5], [39.15, 12.25], [39.18, 12.18], [39.53, 12.03], [39.75, 11.5], [39.65, 11.25], [39.75, 11.0], [39.65, 10.75], [39.75, 10.5], [39.65, 10.25], [39.68, 10.18], [40.03, 10.03], [40.25, 9.5], [40.03, 8.97], [39.68, 8.82], [39.65, 8.75], [39.68, 8.68], [40.03, 8.53], [40.25, 8.0], [40.15, 7.75], [40.25, 7.5], [40.03, 6.97], [39.5, 6.75], [38.97, 6.97], [38.75, 7.5], [38.85, 7.75], [38.82, 7.82], [38.75, 7.85], [38.5, 7.75], [38.25, 7.85], [38.0, 7.75], [37.47, 7.97], [37.32, 8.32], [36.97, 8.47], [36.75, 9.0]]]]}, "2021-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, 9.0], [36.97, 9.53], [37.32, 9.68], [37.35, 9.75], [37.25, 10.0], [37.47, 10.53], [37.82, 10.68], [37.88, 10.8], [37.47, 10.97], [37.25, 11.5], [37.46, 12.0], [37.25, 12.5], [37.47, 13.03], [38.0, 13.25], [38.25, 13.15], [38.5, 13.25], [39.03, 13.03], [39.25, 12.5], [39.15, 12.25], [39.18, 12.18], [39.53, 12.03], [39.75, 11.5], [39.65, 11.25], [39.75, 11.0], [39.65, 10.75], [39.75, 10.5], [39.65, 10.25], [39.68, 10.18], [40.03, 10.03], [40.25, 9.5], [40.03, 8.97], [39.68, 8.82], [39.65, 8.75], [39.68, 8.68], [40.03, 8.53], [40.25, 8.0], [40.15, 7.75], [40.25, 7.5], [40.03, 6.97], [39.5, 6.75], [38.97, 6.97], [38.75, 7.5], [38.85, 7.75], [38.82, 7.82], [38.75, 7.85], [38.5, 7.75], [38.25, 7.85], [38.0, 7.75], [37.47, 7.97], [37.32, 8.32], [36.97, 8.47], [36.75, 9.0]]]]}, "2021-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, 9.0], [36.97, 9.53], [37.32, 9.68], [37.35, 9.75], [37.25, 10.0], [37.47, 10.53], [37.82, 10.68], [37.88, 10.8], [37.47, 10.97], [37.25, 11.5], [37.46, 12.0], [37.25, 12.5], [37.47, 13.03], [38.0, 13.25], [38.25, 13.15], [38.5, 13.25], [39.03, 13.03], [39.25, 12.5], [39.15, 12.25], [39.18, 12.18], [39.53, 12.03], [39.75, 11.5], [39.65, 11.25], [39.75, 11.0], [39.65, 10.75], [39.75, 10.5], [39.65, 10.25], [39.68, 10.18], [40.03, 10.03], [40.25, 9.5], [40.03, 8.97], [39.68, 8.82], [39.65, 8.75], [39.68, 8.68], [40.03, 8.53], [40.25, 8.0], [40.15, 7.75], [40.25, 7.5], [40.03, 6.97], [39.5, 6.75], [38.97, 6.97], [38.75, 7.5], [38.85, 7.75], [38.82, 7.82], [38.75, 7.85], [38.5, 7.75], [38.25, 7.85], [38.0, 7.75], [37.47, 7.97], [37.32, 8.32], [36.97, 8.47], [36.75, 9.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.876346043315948}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8744733722866356}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.718824368915534, 15.635726865656352, 15.911023885320787]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.015464699243239, 11.061422374034748, 11.586695994766842]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9288796378823896, -1.9975123127903884, -1.6970281661871285]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.682644993879137, -2.876346043315948, -2.5120310644890083]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8583612530323144, -1.9310971818582454, -1.6368171816186008]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5188995218473416, -2.303399062444088, -2.1578247103117802]}}