{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:25.097880", "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-Nov-09_to_2022-Nov-12_32.5_16.5"}, "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": 2022110000370}, "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 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 12 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": 76964.13936224779}, "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"]}, "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": 16.5}, "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": 32.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[29.75, 17.0], [29.85, 17.25], [29.75, 17.5], [29.97, 18.03], [30.32, 18.18], [30.47, 18.53], [31.0, 18.75], [31.25, 18.65], [31.5, 18.75], [31.75, 18.65], [32.0, 18.75], [32.25, 18.65], [32.5, 18.75], [33.03, 18.53], [33.25, 18.0], [33.15, 17.75], [33.25, 17.5], [33.15, 17.25], [33.18, 17.18], [33.53, 17.03], [33.75, 16.5], [33.65, 16.25], [33.75, 16.0], [33.65, 15.75], [33.75, 15.5], [33.53, 14.97], [33.0, 14.75], [32.75, 14.85], [32.5, 14.75], [32.25, 14.85], [32.0, 14.75], [31.47, 14.97], [31.3, 15.38], [31.18, 15.32], [31.15, 15.25], [31.25, 15.0], [31.03, 14.47], [30.5, 14.25], [29.97, 14.47], [29.75, 15.0], [29.85, 15.25], [29.75, 15.5], [29.96, 16.0], [29.75, 16.5], [29.85, 16.75], [29.75, 17.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "N.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.75, 15.5], [29.96, 16.0], [29.75, 16.5], [29.85, 16.75], 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amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.2107624866472975}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.354649412469162}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.39846613538657, 22.926637892934536, 23.215571848093134, 22.293357779783662]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.062753468948017, 20.607132831242268, 20.928173303131928, 20.750958962648895]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2899227531228346, -3.648185460621833, -3.2178930447442897, -3.05547709395438]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.922041552383007, -4.2107624866472975, -3.71405881439091, -3.238188826295982]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3828457358443598, -1.5397278743239915, -1.3714887017271944, -1.2653009435442761]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5685427050887661, -1.68451495307855, -1.5205139963008236, -1.3379895183934405]}}