{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:55.214643", "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-Jun-17_to_2022-Jun-20_22.0_1.5"}, "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": 2022060000755}, "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": "June 17 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 20 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 154451.51812506726}, "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": ["Congo, The Democratic Republic of the"]}, "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": 1.5}, "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": 22.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[19.47, 3.53], [20.0, 3.75], [20.25, 3.65], [20.32, 3.68], [20.47, 4.03], [20.82, 4.18], [20.97, 4.53], [21.5, 4.75], [21.75, 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"Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.0, 2.25], [19.47, 2.47], [19.25, 3.0], [19.47, 3.53], [20.0, 3.75], [20.25, 3.65], [20.32, 3.68], [20.47, 4.03], [20.82, 4.18], [20.97, 4.53], [21.5, 4.75], [21.75, 4.65], [22.0, 4.75], [22.53, 4.53], [22.75, 4.0], [22.65, 3.75], [22.68, 3.68], [23.03, 3.53], [23.18, 3.18], [23.53, 3.03], [23.75, 2.5], [23.65, 2.25], [23.68, 2.18], [24.03, 2.03], [24.18, 1.68], [24.53, 1.53], [24.75, 1.0], [24.53, 0.47], [24.18, 0.32], [24.15, 0.25], [24.25, 0.0], [24.15, -0.25], [24.25, -0.5], [24.03, -1.03], [23.5, -1.25], [23.25, -1.15], [23.0, -1.25], [22.75, -1.15], [22.5, -1.25], [22.25, -1.15], [22.0, -1.25], [21.75, -1.15], [21.5, -1.25], [20.97, -1.03], [20.75, -0.5], [20.97, 0.03], [21.32, 0.18], [21.35, 0.25], [21.25, 0.5], [21.35, 0.75], [21.32, 0.82], [21.25, 0.85], [21.0, 0.75], [20.47, 0.97], 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"value": -1.9703460642186394}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.845444084001315, 22.256787131277235, 23.25518034498384, 23.29964335647867]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.11691643233786, 21.167915873498316, 22.011749320095532, 22.684179097852677]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.066673829292107, -2.5597549081947024, -1.4679233062125798, -1.2547022340742444]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.077293921112812, -3.506508522960644, -2.263886730094441, -1.5165150064697173]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.219877812964781, -2.699740240186639, -1.6007868005605457, -1.4767495768520167]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.4806938317189897, -3.575651807788757, -2.6207822006622634, -1.824935115665968]}}