{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:42.668461", "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-Jun-28_to_2012-Jul-02_345.5_19.0"}, "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": 2012060001435}, "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 28 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 02 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 55578.551852275705}, "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": ["Mauritania"]}, "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": 19.0}, "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": 345.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "345.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 343.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 346.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 19.75], [-16.75, 20.0], [-16.53, 20.53], [-16.0, 20.75], [-15.75, 20.65], [-15.5, 20.75], [-15.25, 20.65], [-15.0, 20.75], [-14.47, 20.53], [-14.25, 20.0], [-14.35, 19.75], [-14.32, 19.68], [-13.97, 19.53], [-13.82, 19.18], [-13.47, 19.03], [-13.25, 18.5], [-13.35, 18.25], [-13.25, 18.0], [-13.47, 17.47], [-14.0, 17.25], [-14.25, 17.35], [-14.5, 17.25], [-14.75, 17.35], [-15.0, 17.25], [-15.53, 17.47], [-15.68, 17.82], [-16.03, 17.97], [-16.18, 18.32], [-16.53, 18.47], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75]]]]}, "2012-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 19.75], [-16.75, 20.0], [-16.53, 20.53], [-16.0, 20.75], [-15.75, 20.65], [-15.5, 20.75], [-15.25, 20.65], [-15.0, 20.75], [-14.47, 20.53], [-14.25, 20.0], [-14.35, 19.75], [-14.32, 19.68], [-13.97, 19.53], [-13.82, 19.18], [-13.47, 19.03], [-13.32, 18.68], [-12.97, 18.53], [-12.75, 18.0], [-12.97, 17.47], [-13.5, 17.25], [-13.75, 17.35], [-14.0, 17.25], [-14.25, 17.35], [-14.5, 17.25], [-14.75, 17.35], [-15.0, 17.25], [-15.53, 17.47], [-15.68, 17.82], [-16.03, 17.97], [-16.18, 18.32], [-16.53, 18.47], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75]]]]}, "2012-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 19.75], [-16.75, 20.0], [-16.53, 20.53], [-16.0, 20.75], [-15.75, 20.65], [-15.5, 20.75], [-15.25, 20.65], [-15.0, 20.75], [-14.47, 20.53], [-14.25, 20.0], [-14.35, 19.75], [-14.32, 19.68], [-13.97, 19.53], [-13.82, 19.18], [-13.47, 19.03], [-13.32, 18.68], [-12.97, 18.53], [-12.75, 18.0], [-12.85, 17.75], [-12.75, 17.5], [-12.97, 16.97], [-13.5, 16.75], [-14.03, 16.97], [-14.18, 17.32], [-14.25, 17.35], [-14.5, 17.25], [-14.75, 17.35], [-15.0, 17.25], [-15.53, 17.47], [-15.68, 17.82], [-16.03, 17.97], [-16.18, 18.32], [-16.53, 18.47], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75]]]]}, "2012-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.25, 18.5], [-16.03, 19.03], [-15.68, 19.18], [-15.53, 19.53], [-15.0, 19.75], [-14.75, 19.65], [-14.5, 19.75], [-13.97, 19.53], [-13.82, 19.18], [-13.47, 19.03], [-13.32, 18.68], [-12.97, 18.53], [-12.75, 18.0], [-12.85, 17.75], [-12.75, 17.5], [-12.97, 16.97], [-13.5, 16.75], [-14.03, 16.97], [-14.18, 17.32], [-14.25, 17.35], [-14.5, 17.25], [-14.75, 17.35], [-15.0, 17.25], [-15.53, 17.47], [-15.68, 17.82], [-16.03, 17.97], [-16.25, 18.5]]]]}, "2012-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.07, 18.43], [-14.5, 18.25], [-15.03, 18.47], [-15.25, 19.0], [-15.03, 19.53], [-14.5, 19.75], [-13.97, 19.53], [-13.75, 19.0], [-13.93, 18.57], [-13.5, 18.75], [-12.97, 18.53], [-12.75, 18.0], [-12.85, 17.75], [-12.75, 17.5], [-12.97, 16.97], [-13.5, 16.75], [-14.03, 16.97], [-14.25, 17.5], [-14.15, 17.75], [-14.25, 18.0], [-14.07, 18.43]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.166979535456221}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.179032914497888}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.848919987709678, 27.46364669905597, 28.34406394538985, 28.699774712972612, 30.61799083869198]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.549305672879257, 24.40211691850834, 24.751949637582527, 26.67979541113789, 29.869768627332235]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.391832838159409, -4.717060896254755, -3.846945800915472, -3.8640976506184654, -3.0029798101212464]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.35509664335143, -6.166979535456221, -4.902719109384179, -4.566501587946618, -3.811529868289824]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5890642965455184, -1.8005960277319852, -1.4493069558832714, -1.5888369979137684, -1.4366270362040001]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7853418703756512, -2.657137390038869, -1.6502607362798993, -1.8721761116812972, -1.4701636153330573]}}