{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:51.126144", "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": "2025-Jun-26_to_2025-Jun-29_33.0_19.5"}, "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": 2025060000775}, "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 26 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 29 2025"}, "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": 87269.53173157462}, "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"]}, "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": 19.5}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, 20.0], [30.97, 20.53], [31.5, 20.75], [32.03, 20.53], [32.18, 20.18], [32.25, 20.15], [32.5, 20.25], [32.75, 20.15], [33.0, 20.25], [33.53, 20.03], [33.75, 19.5], [33.65, 19.25], [33.75, 19.0], [33.65, 18.75], [33.75, 18.5], [33.53, 17.97], [33.0, 17.75], [32.75, 17.85], [32.5, 17.75], [31.97, 17.97], [31.75, 18.5], [31.85, 18.75], [31.82, 18.82], [31.47, 18.97], [31.32, 19.32], [30.97, 19.47], [30.75, 20.0]]]]}, "2025-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, 20.0], [30.97, 20.53], [31.5, 20.75], [32.03, 20.53], [32.18, 20.18], [32.25, 20.15], [32.38, 20.2], [32.25, 20.5], [32.47, 21.03], [32.82, 21.18], [32.97, 21.53], [33.5, 21.75], [33.75, 21.65], [34.0, 21.75], [34.25, 21.65], [34.5, 21.75], [34.75, 21.65], [35.0, 21.75], [35.53, 21.53], [35.75, 21.0], [35.65, 20.75], [35.75, 20.5], [35.65, 20.25], [35.75, 20.0], [35.65, 19.75], [35.75, 19.5], [35.65, 19.25], [35.75, 19.0], [35.53, 18.47], [35.0, 18.25], [34.75, 18.35], [34.5, 18.25], [34.2, 18.38], [34.03, 17.97], [33.5, 17.75], [33.25, 17.85], [33.0, 17.75], [32.75, 17.85], [32.5, 17.75], [31.97, 17.97], [31.82, 18.32], [31.47, 18.47], [31.25, 19.0], [31.35, 19.25], [31.32, 19.32], [30.97, 19.47], [30.75, 20.0]]]]}, "2025-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, 20.0], [30.97, 20.53], [31.5, 20.75], [32.03, 20.53], [32.18, 20.18], [32.25, 20.15], [32.38, 20.2], [32.25, 20.5], [32.47, 21.03], [32.82, 21.18], [32.97, 21.53], [33.5, 21.75], [33.75, 21.65], [34.0, 21.75], [34.25, 21.65], [34.5, 21.75], [34.75, 21.65], [35.0, 21.75], [35.53, 21.53], [35.75, 21.0], [35.65, 20.75], [35.75, 20.5], [35.65, 20.25], [35.75, 20.0], [35.65, 19.75], [35.75, 19.5], [35.65, 19.25], [35.75, 19.0], [35.53, 18.47], [35.0, 18.25], [34.75, 18.35], [34.5, 18.25], [34.2, 18.38], [34.03, 17.97], [33.5, 17.75], [33.25, 17.85], [33.0, 17.75], [32.75, 17.85], [32.5, 17.75], [31.97, 17.97], [31.82, 18.32], [31.47, 18.47], [31.25, 19.0], [31.35, 19.25], [31.32, 19.32], [30.97, 19.47], [30.75, 20.0]]]]}, "2025-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.47, 20.03], [32.0, 20.25], [32.25, 20.15], [32.38, 20.2], [32.25, 20.5], [32.47, 21.03], [32.82, 21.18], [32.97, 21.53], [33.5, 21.75], [33.75, 21.65], [34.0, 21.75], [34.25, 21.65], [34.5, 21.75], [34.75, 21.65], [35.0, 21.75], [35.53, 21.53], [35.75, 21.0], [35.65, 20.75], [35.75, 20.5], [35.65, 20.25], [35.75, 20.0], [35.65, 19.75], [35.75, 19.5], [35.65, 19.25], [35.75, 19.0], [35.53, 18.47], [35.0, 18.25], [34.75, 18.35], [34.5, 18.25], [34.2, 18.38], [34.03, 17.97], [33.5, 17.75], [32.97, 17.97], [32.8, 18.38], [32.5, 18.25], [32.25, 18.35], [32.0, 18.25], [31.47, 18.47], [31.25, 19.0], [31.35, 19.25], [31.25, 19.5], [31.47, 20.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5960109858582427}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7530761294107107}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.97689081827798, 32.189551289876306, 31.53643146091042, 32.21122551942483]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.32797520955404, 31.12367401123049, 30.727173105875693, 31.482287343343103]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.512425711565335, -2.5771850855035345, -3.182579369209888, -2.5344929550262103]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7841803149100883, -3.00484848490089, -3.5960109858582427, -2.9315450709410698]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.462608324446483, -1.5365388843753471, -1.9322443901466486, -1.5501693296392078]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.568595056193562, -1.7783071269316586, -2.1047688964640687, -1.733928130745619]}}