{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:36:54.538502", "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": "2023-Nov-10_to_2023-Nov-15_47.0_5.5"}, "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": 2023110000255}, "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": "November 10 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 15 2023"}, "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": 83017.67167899321}, "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", "Somalia"]}, "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": 5.5}, "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": 47.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "47.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 45.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 48.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.97, 6.53], [45.32, 6.68], [45.47, 7.03], [46.0, 7.25], [46.25, 7.15], [46.32, 7.18], [46.47, 7.53], [47.0, 7.75], [47.25, 7.65], [47.5, 7.75], [47.75, 7.65], [48.0, 7.75], [48.53, 7.53], [48.68, 7.18], [49.03, 7.03], [49.25, 6.5], [49.03, 5.97], [48.68, 5.82], [48.65, 5.75], [48.75, 5.5], [48.53, 4.97], [48.18, 4.82], [48.03, 4.47], [47.68, 4.32], [47.53, 3.97], [47.0, 3.75], [46.75, 3.85], [46.5, 3.75], [45.97, 3.97], [45.82, 4.32], [45.47, 4.47], [45.32, 4.82], [44.97, 4.97], [44.75, 5.5], [44.85, 5.75], [44.75, 6.0], [44.97, 6.53]]]]}, "2023-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.97, 6.53], [45.32, 6.68], [45.47, 7.03], [46.0, 7.25], [46.25, 7.15], [46.32, 7.18], [46.47, 7.53], [47.0, 7.75], [47.25, 7.65], [47.5, 7.75], [47.75, 7.65], [48.0, 7.75], [48.53, 7.53], [48.68, 7.18], [49.03, 7.03], [49.25, 6.5], [49.03, 5.97], [48.68, 5.82], [48.65, 5.75], [48.75, 5.5], [48.53, 4.97], [48.18, 4.82], [48.03, 4.47], [47.68, 4.32], [47.53, 3.97], [47.0, 3.75], [46.75, 3.85], [46.5, 3.75], [45.97, 3.97], [45.82, 4.32], [45.47, 4.47], [45.32, 4.82], [44.97, 4.97], [44.75, 5.5], [44.85, 5.75], [44.75, 6.0], [44.97, 6.53]]]]}, "2023-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.97, 6.53], [45.32, 6.68], [45.47, 7.03], [46.0, 7.25], [46.25, 7.15], [46.32, 7.18], [46.47, 7.53], [47.0, 7.75], [47.25, 7.65], [47.5, 7.75], [47.75, 7.65], [48.0, 7.75], [48.53, 7.53], [48.68, 7.18], [49.03, 7.03], [49.25, 6.5], [49.03, 5.97], [48.68, 5.82], [48.65, 5.75], [48.75, 5.5], [48.53, 4.97], [48.18, 4.82], [48.03, 4.47], [47.68, 4.32], [47.53, 3.97], [47.0, 3.75], [46.75, 3.85], [46.5, 3.75], [45.97, 3.97], [45.82, 4.32], [45.47, 4.47], [45.32, 4.82], [44.97, 4.97], [44.75, 5.5], [44.85, 5.75], [44.75, 6.0], [44.97, 6.53]]]]}, "2023-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.47, 6.03], [45.82, 6.18], [45.97, 6.53], [46.5, 6.75], [47.03, 6.53], [47.18, 6.18], [47.25, 6.15], [47.5, 6.25], [48.03, 6.03], [48.25, 5.5], [48.15, 5.25], [48.25, 5.0], [48.03, 4.47], [47.68, 4.32], [47.53, 3.97], [47.0, 3.75], [46.75, 3.85], [46.5, 3.75], [45.97, 3.97], [45.82, 4.32], [45.47, 4.47], [45.25, 5.0], [45.35, 5.25], [45.25, 5.5], [45.47, 6.03]]]]}, "2023-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.75, 6.0], [45.97, 6.53], [46.5, 6.75], [47.03, 6.53], [47.18, 6.18], [47.25, 6.15], [47.5, 6.25], [48.03, 6.03], [48.25, 5.5], [48.03, 4.97], [47.5, 4.75], [47.25, 4.85], [47.0, 4.75], [46.47, 4.97], [46.32, 5.32], [45.97, 5.47], [45.75, 6.0]]]]}, "2023-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.75, 6.0], [45.97, 6.53], [46.5, 6.75], [47.03, 6.53], [47.18, 6.18], [47.53, 6.03], [47.75, 5.5], [47.53, 4.97], [47.0, 4.75], [46.47, 4.97], [46.32, 5.32], [45.97, 5.47], [45.75, 6.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.3140297249979085}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.462091356199256}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.992717957214495, 23.814599502234955, 24.74633139754434, 25.119416393657843, 25.12072535922033, 24.954492830452466]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.914751618119453, 22.941726566861178, 24.114118646350448, 24.701354338090653, 24.893723494448295, 24.764471275375342]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.486929216209641, -2.6667698019126607, -1.7373955036058955, -1.5909422599121243, -1.5936605037144507, -1.7409815472448997]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.3140297249979085, -3.1199837500253125, -2.1183186603112745, -2.018018088034978, -1.6240554008930417, -1.772926410481091]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-3.318412012562271, -2.5641994719752574, -1.685139088232136, -1.536963545439488, -1.5420846905964414, -1.6779328988128097]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-4.017207262437732, -2.897065613821264, -2.031693236658726, -1.8073303921982633, -1.6090346128311377, -1.7269829044434444]}}