{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:38.684803", "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": "2014-Jun-23_to_2014-Jul-01_25.0_14.5"}, "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": 2014060000902}, "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 23 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 01 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 110625.08495989432}, "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": ["Central-Africa", "N.Eastern-Africa", "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": 14.5}, "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": 25.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 29.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.0, 15.75], [27.53, 15.53], [27.75, 15.0], [27.53, 14.47], [27.0, 14.25], [26.47, 14.47], [26.25, 15.0], [26.47, 15.53], [27.0, 15.75]]]]}, "2014-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.47, 15.53], [25.82, 15.68], [25.97, 16.03], [26.5, 16.25], [27.03, 16.03], [27.18, 15.68], [27.53, 15.53], [27.75, 15.0], [27.53, 14.47], [27.18, 14.32], [27.03, 13.97], [26.5, 13.75], [26.25, 13.85], [26.0, 13.75], [25.47, 13.97], [25.25, 14.5], [25.35, 14.75], [25.25, 15.0], [25.47, 15.53]]]]}, "2014-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, 15.03], [25.32, 15.18], [25.47, 15.53], [25.82, 15.68], [25.97, 16.03], [26.5, 16.25], [27.03, 16.03], [27.18, 15.68], [27.25, 15.65], [27.5, 15.75], [27.75, 15.65], [28.0, 15.75], [28.25, 15.65], [28.5, 15.75], [29.03, 15.53], [29.25, 15.0], [29.15, 14.75], [29.25, 14.5], [29.03, 13.97], [28.68, 13.82], [28.53, 13.47], [28.0, 13.25], [27.47, 13.47], [27.32, 13.82], [27.25, 13.85], [27.0, 13.75], [26.75, 13.85], [26.68, 13.82], [26.53, 13.47], [26.0, 13.25], [25.75, 13.35], [25.5, 13.25], [25.07, 13.43], [25.25, 13.0], [25.03, 12.47], [24.5, 12.25], [23.97, 12.47], [23.75, 13.0], [23.97, 13.53], [24.5, 13.75], [24.93, 13.57], [24.75, 14.0], [24.85, 14.25], [24.75, 14.5], [24.97, 15.03]]]]}, "2014-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.85, 13.75], [23.75, 14.0], [23.85, 14.25], [23.75, 14.5], [23.97, 15.03], [24.32, 15.18], [24.47, 15.53], [24.82, 15.68], [24.97, 16.03], [25.5, 16.25], [26.0, 16.04], [26.5, 16.25], [26.75, 16.15], [27.0, 16.25], [27.53, 16.03], [27.68, 15.68], [27.75, 15.65], [28.0, 15.75], [28.25, 15.65], [28.5, 15.75], [28.8, 15.63], [28.97, 16.03], [29.5, 16.25], [30.03, 16.03], [30.25, 15.5], [30.15, 15.25], [30.25, 15.0], [30.03, 14.47], [29.5, 14.25], [29.2, 14.38], [29.03, 13.97], [28.68, 13.82], [28.53, 13.47], [28.0, 13.25], [27.47, 13.47], [27.32, 13.82], [27.25, 13.85], [27.0, 13.75], [26.75, 13.85], [26.68, 13.82], [26.53, 13.47], [26.0, 13.25], [25.75, 13.35], [25.68, 13.32], [25.53, 12.97], [25.18, 12.82], [25.03, 12.47], [24.5, 12.25], [23.97, 12.47], [23.75, 13.0], [23.85, 13.25], [23.75, 13.5], [23.85, 13.75]]]]}, "2014-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.25, 15.0], [23.47, 15.53], [24.0, 15.75], [24.25, 15.65], [24.5, 15.75], [24.75, 15.65], [24.82, 15.68], [24.97, 16.03], [25.5, 16.25], [26.0, 16.04], [26.5, 16.25], [26.75, 16.15], [27.0, 16.25], [27.53, 16.03], [27.68, 15.68], [27.75, 15.65], [28.0, 15.75], [28.25, 15.65], [28.5, 15.75], [28.8, 15.63], [28.97, 16.03], [29.5, 16.25], [30.03, 16.03], [30.25, 15.5], [30.15, 15.25], [30.25, 15.0], [30.03, 14.47], [29.5, 14.25], [29.2, 14.38], [29.03, 13.97], [28.68, 13.82], [28.53, 13.47], [28.0, 13.25], [27.47, 13.47], [27.32, 13.82], [27.25, 13.85], [27.0, 13.75], [26.75, 13.85], [26.68, 13.82], [26.53, 13.47], [26.0, 13.25], [25.75, 13.35], [25.68, 13.32], [25.53, 12.97], [25.18, 12.82], [25.03, 12.47], [24.5, 12.25], [23.97, 12.47], [23.75, 13.0], [23.85, 13.25], [23.75, 13.5], [23.85, 13.75], [23.75, 14.0], [23.85, 14.25], [23.82, 14.32], [23.47, 14.47], [23.25, 15.0]]]]}, "2014-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.97, 15.53], [23.5, 15.75], [23.75, 15.65], [24.0, 15.75], [24.25, 15.65], [24.5, 15.75], [24.75, 15.65], [24.82, 15.68], [24.97, 16.03], [25.32, 16.18], [25.47, 16.53], [26.0, 16.75], [26.53, 16.53], [26.68, 16.18], [26.75, 16.15], [27.0, 16.25], [27.53, 16.03], [27.75, 15.5], [27.53, 14.97], [27.0, 14.75], [26.75, 14.85], [26.68, 14.82], [26.65, 14.75], [26.75, 14.5], [26.53, 13.97], [26.18, 13.82], [26.03, 13.47], [25.68, 13.32], [25.53, 12.97], [25.18, 12.82], [25.03, 12.47], [24.5, 12.25], [23.97, 12.47], [23.75, 13.0], [23.85, 13.25], [23.75, 13.5], [23.85, 13.75], [23.82, 13.82], [23.47, 13.97], [23.32, 14.32], [22.97, 14.47], [22.75, 15.0], [22.97, 15.53]]], [[[30.03, 16.03], [30.25, 15.5], [30.15, 15.25], [30.25, 15.0], [30.03, 14.47], [29.5, 14.25], [29.25, 14.35], [29.0, 14.25], [28.47, 14.47], [28.25, 15.0], [28.47, 15.53], [28.82, 15.68], [28.97, 16.03], [29.5, 16.25], [30.03, 16.03]]]]}, "2014-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.97, 15.53], [23.5, 15.75], [23.75, 15.65], [24.0, 15.75], [24.25, 15.65], [24.5, 15.75], [24.75, 15.65], [24.82, 15.68], [24.97, 16.03], [25.32, 16.18], [25.47, 16.53], [26.0, 16.75], [26.53, 16.53], [26.68, 16.18], [26.75, 16.15], [27.0, 16.25], [27.53, 16.03], [27.75, 15.5], [27.53, 14.97], [27.0, 14.75], [26.75, 14.85], [26.68, 14.82], [26.65, 14.75], [26.75, 14.5], [26.53, 13.97], [26.18, 13.82], [26.03, 13.47], [25.68, 13.32], [25.53, 12.97], [25.18, 12.82], [25.03, 12.47], [24.5, 12.25], [23.97, 12.47], [23.75, 13.0], [23.85, 13.25], [23.75, 13.5], [23.85, 13.75], [23.82, 13.82], [23.47, 13.97], [23.32, 14.32], [22.97, 14.47], [22.75, 15.0], [22.97, 15.53]]], [[[30.03, 16.03], [30.25, 15.5], [30.15, 15.25], [30.25, 15.0], [30.03, 14.47], [29.5, 14.25], [29.25, 14.35], [29.0, 14.25], [28.47, 14.47], [28.25, 15.0], [28.47, 15.53], [28.82, 15.68], [28.97, 16.03], [29.5, 16.25], [30.03, 16.03]]]]}, "2014-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.97, 15.53], [23.5, 15.75], [23.75, 15.65], [24.0, 15.75], [24.25, 15.65], [24.5, 15.75], [24.75, 15.65], [24.82, 15.68], [24.97, 16.03], [25.32, 16.18], [25.47, 16.53], [26.0, 16.75], [26.53, 16.53], [26.68, 16.18], [26.75, 16.15], [27.0, 16.25], [27.53, 16.03], [27.75, 15.5], [27.53, 14.97], [27.0, 14.75], [26.75, 14.85], [26.68, 14.82], [26.65, 14.75], [26.75, 14.5], [26.53, 13.97], [26.18, 13.82], [26.03, 13.47], [25.68, 13.32], [25.53, 12.97], [25.18, 12.82], [25.03, 12.47], [24.5, 12.25], [23.97, 12.47], [23.75, 13.0], [23.85, 13.25], [23.75, 13.5], [23.85, 13.75], [23.82, 13.82], [23.47, 13.97], [23.32, 14.32], [22.97, 14.47], [22.75, 15.0], [22.97, 15.53]]], [[[28.25, 15.0], [28.47, 15.53], [29.0, 15.75], [29.25, 15.65], [29.5, 15.75], [30.03, 15.53], [30.25, 15.0], [30.03, 14.47], [29.5, 14.25], [29.25, 14.35], [29.0, 14.25], [28.47, 14.47], [28.25, 15.0]]]]}, "2014-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, 15.53], [24.82, 15.68], [24.97, 16.03], [25.5, 16.25], [26.03, 16.03], [26.25, 15.5], [26.03, 14.97], [25.68, 14.82], [25.65, 14.75], [25.75, 14.5], [25.53, 13.97], [25.0, 13.75], [24.47, 13.97], [24.25, 14.5], [24.35, 14.75], [24.25, 15.0], [24.47, 15.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.008129441726567}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.756315274213483}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.562006196406344, 28.086019592861533, 27.88332576695302, 26.825090274447973, 27.11319917588895, 26.60001809508725, 25.196813432703948, 26.132847033634164, 26.64563362440282]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.562006196406344, 27.45926681015311, 21.69078161977643, 20.641449012797295, 20.99206925897812, 21.406287814797395, 19.92859491606697, 20.616641721832764, 25.760335097169957]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.972148523542046, -1.8699346636507717, -2.219430965198894, -2.8920141218143423, -2.504115169284974, -2.4820614494238247, -3.8628605680748276, -2.8038711823987703, -2.028707735132722]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.972148523542046, -2.073053825440013, -2.933478000838477, -4.274326150567845, -3.8323977974875447, -3.345242703426777, -5.008129441726567, -3.5560752790859738, -2.5215680369673805]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7136760575967365, -1.5064073309458668, -1.7416526943100519, -2.2717754835446224, -1.9117099898813952, -1.93822738416337, -2.9096203711774535, -2.083882267489258, -1.5859115526192535]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7136760575967365, -1.6698280145324387, -2.2888289351943705, -3.1549997149803555, -2.763112730893901, -2.508981313610812, -4.020110435050672, -2.664212253739972, -1.7434146687200405]}}