{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:38.468500", "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-Feb-23_to_2012-Feb-26_28.5_-6.0"}, "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": 2012020001272}, "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": "February 23 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 26 2012"}, "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": 55391.854773362254}, "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": ["Congo DRC"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-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": -6.0}, "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": 28.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 29.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.5, -5.25], [29.03, -5.47], [29.25, -6.0], [29.03, -6.53], [28.5, -6.75], [27.97, -6.53], [27.75, -6.0], [27.97, -5.47], [28.5, -5.25]]]]}, "2012-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, -5.0], [26.47, -4.47], [27.0, -4.25], [27.25, -4.35], [27.32, -4.32], [27.46, -4.0], [27.25, -3.5], [27.47, -2.97], [28.0, -2.75], [28.25, -2.85], [28.5, -2.75], [29.03, -2.97], [29.25, -3.5], [29.15, -3.75], [29.25, -4.0], [29.15, -4.25], [29.25, -4.5], [29.15, -4.75], [29.25, -5.0], [29.15, -5.25], [29.18, -5.32], [29.53, -5.47], [29.75, -6.0], [29.65, -6.25], [29.75, -6.5], [29.65, -6.75], [29.75, -7.0], [29.53, -7.53], [29.0, -7.75], [28.75, -7.65], [28.5, -7.75], [27.97, -7.53], [27.75, -7.0], [27.85, -6.75], [27.75, -6.5], [27.85, -6.25], [27.82, -6.18], [27.75, -6.15], [27.5, -6.25], [26.97, -6.03], [26.82, -5.68], [26.47, -5.53], [26.25, -5.0]]]]}, "2012-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, -5.0], [26.47, -4.47], [27.0, -4.25], [27.25, -4.35], [27.32, -4.32], [27.46, -4.0], [27.25, -3.5], [27.47, -2.97], [28.0, -2.75], [28.25, -2.85], [28.5, -2.75], [29.03, -2.97], [29.25, -3.5], [29.15, -3.75], [29.25, -4.0], [29.15, -4.25], [29.25, -4.5], [29.15, -4.75], [29.25, -5.0], [29.15, -5.25], [29.18, -5.32], [29.53, -5.47], [29.75, -6.0], [29.65, -6.25], [29.75, -6.5], [29.65, -6.75], [29.75, -7.0], [29.53, -7.53], [29.0, -7.75], [28.75, -7.65], [28.5, -7.75], [27.97, -7.53], [27.75, -7.0], [27.85, -6.75], [27.75, -6.5], [27.85, -6.25], [27.82, -6.18], [27.75, -6.15], [27.5, -6.25], [26.97, -6.03], [26.82, -5.68], [26.47, -5.53], [26.25, -5.0]]]]}, "2012-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, -5.0], [26.47, -4.47], [27.0, -4.25], [27.25, -4.35], [27.32, -4.32], [27.46, -4.0], [27.25, -3.5], [27.47, -2.97], [28.0, -2.75], [28.25, -2.85], [28.5, -2.75], [29.03, -2.97], [29.25, -3.5], [29.15, -3.75], [29.25, -4.0], [29.15, -4.25], [29.25, -4.5], [29.15, -4.75], [29.25, -5.0], [29.15, -5.25], [29.18, -5.32], [29.53, -5.47], [29.75, -6.0], [29.65, -6.25], [29.75, -6.5], [29.65, -6.75], [29.75, -7.0], [29.53, -7.53], [29.0, -7.75], [28.75, -7.65], [28.5, -7.75], [27.97, -7.53], [27.75, -7.0], [27.85, -6.75], [27.75, -6.5], [27.85, -6.25], [27.82, -6.18], [27.75, -6.15], [27.5, -6.25], [26.97, -6.03], [26.82, -5.68], [26.47, -5.53], [26.25, -5.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9525105288516897}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.096792699696383}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.525045044337446, 20.535156089890165, 20.146193278821613, 20.31412439673494]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.525045044337446, 16.175114533779038, 16.442841517851946, 16.30950478820415]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.819436664224611, -1.9719892745489902, -2.2821398537447144, -2.0516576394327646]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.819436664224611, -2.51344664671268, -2.9525105288516897, -2.8952081603296733]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3545258326144631, -1.5934292412363906, -1.8859454912065092, -1.7080150456063494]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3545258326144631, -1.8996098738605784, -2.370144659921269, -2.2632590309428116]}}