{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:52.192627", "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": "2012-Jul-06_to_2012-Jul-08_23.5_8.5"}, "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": 2012070000445}, "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": "July 06 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 08 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 112651.2684382351}, "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": ["Central African Republic", "Chad", "South Sudan", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": 8.5}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, 10.97], [20.75, 11.5], [20.97, 12.03], [21.5, 12.25], [21.75, 12.15], [22.0, 12.25], [22.53, 12.03], [22.68, 11.68], [22.75, 11.65], [22.82, 11.68], [22.97, 12.03], [23.5, 12.25], [23.75, 12.15], [24.0, 12.25], [24.25, 12.15], [24.5, 12.25], [25.03, 12.03], [25.25, 11.5], [25.13, 11.2], [25.53, 11.03], [25.75, 10.5], [25.54, 10.0], [25.75, 9.5], [25.65, 9.25], [25.75, 9.0], [25.53, 8.47], [25.18, 8.32], [25.03, 7.97], [24.68, 7.82], [24.53, 7.47], [24.0, 7.25], [23.75, 7.35], [23.5, 7.25], [22.97, 7.47], [22.75, 8.0], [22.85, 8.25], [22.82, 8.32], [22.75, 8.35], [22.5, 8.25], [22.25, 8.35], [22.0, 8.25], [21.47, 8.47], [21.25, 9.0], [21.47, 9.53], [21.82, 9.68], [21.96, 10.0], [21.75, 10.5], [21.85, 10.75], [21.82, 10.82], [21.75, 10.85], [21.5, 10.75], [20.97, 10.97]]]]}, "2012-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, 10.97], [20.75, 11.5], [20.97, 12.03], [21.5, 12.25], [21.75, 12.15], [22.0, 12.25], [22.53, 12.03], [22.68, 11.68], [22.75, 11.65], [22.82, 11.68], [22.97, 12.03], [23.5, 12.25], [23.75, 12.15], [24.0, 12.25], [24.25, 12.15], [24.5, 12.25], [25.03, 12.03], [25.25, 11.5], [25.13, 11.2], [25.53, 11.03], [25.75, 10.5], [25.54, 10.0], [25.75, 9.5], [25.65, 9.25], [25.75, 9.0], [25.53, 8.47], [25.18, 8.32], [25.03, 7.97], [24.68, 7.82], [24.53, 7.47], [24.0, 7.25], [23.75, 7.35], [23.5, 7.25], [22.97, 7.47], [22.75, 8.0], [22.85, 8.25], [22.82, 8.32], [22.75, 8.35], [22.5, 8.25], [22.25, 8.35], [22.0, 8.25], [21.47, 8.47], [21.25, 9.0], [21.47, 9.53], [21.82, 9.68], [21.96, 10.0], [21.75, 10.5], [21.85, 10.75], [21.82, 10.82], [21.75, 10.85], [21.5, 10.75], [20.97, 10.97]]]]}, "2012-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, 10.97], [20.75, 11.5], [20.97, 12.03], [21.5, 12.25], [21.75, 12.15], [22.0, 12.25], [22.53, 12.03], [22.68, 11.68], [22.75, 11.65], [22.82, 11.68], [22.97, 12.03], [23.5, 12.25], [23.75, 12.15], [24.0, 12.25], [24.25, 12.15], [24.5, 12.25], [25.03, 12.03], [25.25, 11.5], [25.13, 11.2], [25.53, 11.03], [25.75, 10.5], [25.54, 10.0], [25.75, 9.5], [25.65, 9.25], [25.75, 9.0], [25.53, 8.47], [25.18, 8.32], [25.03, 7.97], [24.68, 7.82], [24.53, 7.47], [24.0, 7.25], [23.75, 7.35], [23.5, 7.25], [22.97, 7.47], [22.75, 8.0], [22.85, 8.25], [22.82, 8.32], [22.75, 8.35], [22.5, 8.25], [22.25, 8.35], [22.0, 8.25], [21.47, 8.47], [21.25, 9.0], [21.47, 9.53], [21.82, 9.68], [21.96, 10.0], [21.75, 10.5], [21.85, 10.75], [21.82, 10.82], [21.75, 10.85], [21.5, 10.75], [20.97, 10.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.156034372062834}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8826123428850146}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.563837598915484, 23.352801391266496, 23.381697185446342]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.48158866942822, 20.337749819278997, 21.43363771837585]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.82603269011247, -1.9561707604655005, -1.8656335780770734]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3423744990977298, -3.156034372062834, -2.3935962706257214]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6296801646031218, -1.8452085445503579, -1.7067998341779902]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3248656143748967, -3.73733838419573, -2.32526701604278]}}