{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:40.757620", "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": "2019-Oct-27_to_2019-Nov-01_35.5_3.5"}, "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": 2019100000891}, "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 27 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 01 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 52413.73768901538}, "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", "Kenya", "South Sudan", "Uganda"]}, "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": 3.5}, "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": 33.75}, "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": 2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, 5.03], [34.0, 5.25], [34.25, 5.15], [34.5, 5.25], [34.75, 5.15], [35.0, 5.25], [35.25, 5.15], [35.32, 5.18], [35.47, 5.53], [36.0, 5.75], [36.53, 5.53], [36.75, 5.0], [36.53, 4.47], [36.18, 4.32], [36.15, 4.25], [36.25, 4.0], [36.03, 3.47], [35.5, 3.25], [35.25, 3.35], [35.0, 3.25], [34.75, 3.35], [34.5, 3.25], [34.25, 3.35], [34.0, 3.25], [33.47, 3.47], [33.25, 4.0], [33.35, 4.25], [33.25, 4.5], [33.47, 5.03]]]]}, "2019-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, 5.03], [34.0, 5.25], [34.25, 5.15], [34.32, 5.18], [34.47, 5.53], [35.0, 5.75], [35.5, 5.54], [36.0, 5.75], [36.53, 5.53], [36.75, 5.0], [36.65, 4.75], [36.75, 4.5], [36.65, 4.25], [36.75, 4.0], [36.65, 3.75], [36.75, 3.5], [36.65, 3.25], [36.75, 3.0], [36.53, 2.47], [36.0, 2.25], [35.75, 2.35], [35.5, 2.25], [34.97, 2.47], [34.75, 3.0], [34.85, 3.25], [34.82, 3.32], [34.75, 3.35], [34.5, 3.25], [34.25, 3.35], [34.0, 3.25], [33.47, 3.47], [33.25, 4.0], [33.35, 4.25], [33.25, 4.5], [33.47, 5.03]]]]}, "2019-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, 5.03], [34.0, 5.25], [34.25, 5.15], [34.32, 5.18], [34.47, 5.53], [35.0, 5.75], [35.5, 5.54], [36.0, 5.75], [36.53, 5.53], [36.75, 5.0], [36.65, 4.75], [36.75, 4.5], [36.65, 4.25], [36.75, 4.0], [36.65, 3.75], [36.75, 3.5], [36.65, 3.25], [36.75, 3.0], [36.53, 2.47], [36.0, 2.25], [35.75, 2.35], [35.5, 2.25], [34.97, 2.47], [34.82, 2.82], [34.47, 2.97], [34.32, 3.32], [34.25, 3.35], [34.0, 3.25], [33.47, 3.47], [33.25, 4.0], [33.35, 4.25], [33.25, 4.5], [33.47, 5.03]]]]}, "2019-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.25, 4.5], [33.47, 5.03], [34.0, 5.25], [34.25, 5.15], [34.32, 5.18], [34.47, 5.53], [35.0, 5.75], [35.53, 5.53], [35.68, 5.18], [35.75, 5.15], [36.0, 5.25], [36.53, 5.03], [36.75, 4.5], [36.65, 4.25], [36.75, 4.0], [36.65, 3.75], [36.75, 3.5], [36.65, 3.25], [36.75, 3.0], [36.53, 2.47], [36.0, 2.25], [35.75, 2.35], [35.5, 2.25], [34.97, 2.47], [34.82, 2.82], [34.47, 2.97], [34.32, 3.32], [33.97, 3.47], [33.82, 3.82], [33.47, 3.97], [33.25, 4.5]]]]}, "2019-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.5, 4.75], [36.03, 4.53], [36.25, 4.0], [36.15, 3.75], [36.25, 3.5], [36.03, 2.97], [35.5, 2.75], [35.25, 2.85], [35.0, 2.75], [34.47, 2.97], [34.25, 3.5], [34.47, 4.03], [34.82, 4.18], [34.97, 4.53], [35.5, 4.75]]]]}, "2019-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.5, 4.25], [36.03, 4.03], [36.25, 3.5], [36.03, 2.97], [35.5, 2.75], [34.97, 2.97], [34.75, 3.5], [34.97, 4.03], [35.5, 4.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7121477043160667}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.696327852113046}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.50767369142136, 26.444509511200863, 25.82815829812239, 26.294640713394415, 26.077476327143017, 26.414598037218923]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.407770247418227, 21.492473430741313, 21.046127068752128, 24.692751561671628, 25.640252227800318, 26.414598037218923]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.730174442588956, -2.3651428540519746, -2.958022265000442, -2.7148773707972356, -2.702052885528019, -2.946445607213491]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2372414429510172, -2.991200810663372, -3.7121477043160667, -3.5035001047937158, -2.876601959837785, -2.946445607213491]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5645088070614366, -1.5414375226953991, -1.9527250804848728, -1.7648949267254077, -1.711144791578412, -1.797246838386753]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.717509492422104, -1.879187675432249, -2.394114744332308, -2.1949332683113316, -1.789046505697392, -1.797246838386753]}}