{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:26.271964", "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": "2010-Aug-25_to_2010-Aug-28_35.0_17.5"}, "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": 2010080001078}, "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": "August 25 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 28 2010"}, "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": 130125.17074436607}, "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": ["Eritrea", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 17.5}, "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": 35.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 33.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.75, 17.0], [32.97, 17.53], [33.5, 17.75], [33.75, 17.65], 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19.15], [36.0, 19.25], [36.25, 19.15], [36.5, 19.25], [37.03, 19.03], [37.18, 18.68], [37.53, 18.53], [37.75, 18.0], [37.65, 17.75], [37.75, 17.5], [37.57, 17.07], [38.0, 17.25], [38.53, 17.03], [38.75, 16.5], [38.53, 15.97], [38.18, 15.82], [38.03, 15.47], [37.5, 15.25], [37.25, 15.35], [37.18, 15.32], [37.03, 14.97], [36.5, 14.75], [36.25, 14.85], [36.0, 14.75], [35.7, 14.88], [35.53, 14.47], [35.0, 14.25], [34.5, 14.46], [34.0, 14.25], [33.47, 14.47], [33.25, 15.0], [33.47, 15.53], [33.82, 15.68], [33.85, 15.75], [33.82, 15.82], [33.75, 15.85], [33.5, 15.75], [32.97, 15.97], [32.75, 16.5], [32.85, 16.75], [32.75, 17.0], [32.97, 17.53]]]]}, "2010-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.97, 17.53], [33.5, 17.75], [33.75, 17.65], [33.82, 17.68], [33.85, 17.75], [33.75, 18.0], [33.97, 18.53], [34.32, 18.68], [34.47, 19.03], [35.0, 19.25], [35.25, 19.15], [35.5, 19.25], [35.75, 19.15], [36.0, 19.25], [36.25, 19.15], [36.5, 19.25], [37.03, 19.03], [37.18, 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"evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.66450406253722, 23.93744530956741, 24.590780845338486, 23.90125519648194]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7117474278398226, -2.9552885519292147, -2.9069558413519045, -3.3947099673605354]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2158664034437265, -4.048252722705968, -4.09637540573749, -4.781203312173659]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5576412956733978, -1.768181857230573, -1.7764904517038873, -2.099011223234111]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8911094208734103, -2.5997414673305954, -2.442257620740495, -3.217303303849943]}}