{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:22.871259", "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": "2010-Dec-28_to_2010-Dec-31_19.0_5.5"}, "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": 2010120001288}, "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": "December 28 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 31 2010"}, "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": 364204.27424905554}, "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": ["Cameroon", "Central African Republic", "Chad"]}, "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": 5.5}, "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": 19.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.25}, "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": {"2010-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, 5.75], [18.25, 5.65], [18.32, 5.68], [18.35, 5.75], [18.25, 6.0], [18.47, 6.53], [19.0, 6.75], [19.25, 6.65], [19.5, 6.75], [20.03, 6.53], [20.25, 6.0], [20.03, 5.47], [19.68, 5.32], [19.53, 4.97], [19.18, 4.82], [19.03, 4.47], [18.5, 4.25], [18.25, 4.35], [18.18, 4.32], [18.03, 3.97], [17.5, 3.75], [16.97, 3.97], [16.75, 4.5], [16.97, 5.03], [17.32, 5.18], [17.47, 5.53], [18.0, 5.75]]]]}, "2010-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, 7.03], [14.5, 7.25], [14.75, 7.15], [14.82, 7.18], [14.85, 7.25], [14.82, 7.32], [14.47, 7.47], [14.25, 8.0], [14.47, 8.53], [14.82, 8.68], [14.85, 8.75], [14.75, 9.0], [14.97, 9.53], [15.32, 9.68], [15.35, 9.75], [15.25, 10.0], [15.35, 10.25], [15.25, 10.5], [15.47, 11.03], [16.0, 11.25], [16.25, 11.15], [16.5, 11.25], [16.75, 11.15], [16.82, 11.18], [16.97, 11.53], [17.5, 11.75], [17.75, 11.65], [17.82, 11.68], [17.97, 12.03], [18.5, 12.25], [19.03, 12.03], [19.25, 11.5], [19.15, 11.25], [19.18, 11.18], [19.53, 11.03], [19.68, 10.68], [19.75, 10.65], [20.0, 10.75], [20.53, 10.53], [20.75, 10.0], [20.65, 9.75], [20.68, 9.68], [21.03, 9.53], [21.25, 9.0], [21.13, 8.7], [21.53, 8.53], [21.75, 8.0], [21.53, 7.47], [21.18, 7.32], [21.03, 6.97], [20.68, 6.82], [20.65, 6.75], [20.75, 6.5], [20.53, 5.97], [20.18, 5.82], [20.03, 5.47], [19.68, 5.32], [19.53, 4.97], [19.18, 4.82], [19.03, 4.47], [18.5, 4.25], [18.25, 4.35], [18.18, 4.32], [18.03, 3.97], [17.5, 3.75], [17.25, 3.85], [17.0, 3.75], [16.75, 3.85], [16.5, 3.75], [16.25, 3.85], [16.0, 3.75], [15.75, 3.85], [15.5, 3.75], [14.97, 3.97], [14.75, 4.5], [14.96, 5.0], [14.82, 5.32], [14.75, 5.35], [14.5, 5.25], [13.97, 5.47], [13.75, 6.0], [13.85, 6.25], [13.75, 6.5], [13.97, 7.03]], [[16.25, 5.35], [16.18, 5.32], [16.13, 5.2], [16.25, 5.15], [16.5, 5.25], [16.25, 5.35]], [[16.75, 5.15], [16.82, 5.18], [16.85, 5.25], [16.82, 5.32], [16.75, 5.35], [16.5, 5.25], [16.75, 5.15]]]]}, "2010-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, 7.03], [14.5, 7.25], [14.75, 7.15], [14.82, 7.18], [14.85, 7.25], [14.82, 7.32], [14.47, 7.47], [14.25, 8.0], [14.47, 8.53], [14.82, 8.68], [14.85, 8.75], [14.75, 9.0], [14.97, 9.53], [15.32, 9.68], [15.35, 9.75], [15.25, 10.0], [15.35, 10.25], [15.25, 10.5], [15.47, 11.03], [16.0, 11.25], [16.25, 11.15], [16.5, 11.25], [16.75, 11.15], [16.82, 11.18], [16.97, 11.53], [17.5, 11.75], [17.75, 11.65], [17.82, 11.68], [17.97, 12.03], [18.5, 12.25], [19.03, 12.03], [19.25, 11.5], [19.15, 11.25], [19.18, 11.18], [19.53, 11.03], [19.68, 10.68], [19.75, 10.65], [20.0, 10.75], [20.53, 10.53], [20.75, 10.0], [20.65, 9.75], [20.68, 9.68], [21.03, 9.53], [21.25, 9.0], [21.13, 8.7], [21.53, 8.53], [21.75, 8.0], [21.53, 7.47], [21.18, 7.32], [21.03, 6.97], [20.68, 6.82], [20.65, 6.75], [20.75, 6.5], [20.53, 5.97], [20.18, 5.82], [20.03, 5.47], [19.68, 5.32], [19.53, 4.97], [19.18, 4.82], [19.03, 4.47], [18.5, 4.25], [18.25, 4.35], [18.18, 4.32], [18.03, 3.97], [17.5, 3.75], [17.25, 3.85], [17.0, 3.75], [16.75, 3.85], [16.5, 3.75], [16.25, 3.85], [16.0, 3.75], [15.75, 3.85], [15.5, 3.75], [14.97, 3.97], [14.75, 4.5], [14.96, 5.0], [14.82, 5.32], [14.75, 5.35], [14.5, 5.25], [13.97, 5.47], [13.75, 6.0], [13.85, 6.25], [13.75, 6.5], [13.97, 7.03]], [[16.25, 5.35], [16.18, 5.32], [16.13, 5.2], [16.25, 5.15], [16.5, 5.25], [16.25, 5.35]], [[16.75, 5.15], [16.82, 5.18], [16.85, 5.25], [16.82, 5.32], [16.75, 5.35], [16.5, 5.25], [16.75, 5.15]]]]}, "2010-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, 7.03], [14.5, 7.25], [14.75, 7.15], [14.82, 7.18], [14.85, 7.25], [14.82, 7.32], [14.47, 7.47], [14.25, 8.0], [14.47, 8.53], [14.82, 8.68], [14.85, 8.75], [14.75, 9.0], [14.97, 9.53], [15.32, 9.68], [15.35, 9.75], [15.25, 10.0], [15.35, 10.25], [15.25, 10.5], [15.47, 11.03], [16.0, 11.25], [16.25, 11.15], [16.5, 11.25], [16.75, 11.15], [16.82, 11.18], [16.97, 11.53], [17.5, 11.75], [17.75, 11.65], [17.82, 11.68], [17.97, 12.03], [18.5, 12.25], [19.03, 12.03], [19.25, 11.5], [19.15, 11.25], [19.18, 11.18], [19.53, 11.03], [19.68, 10.68], [19.75, 10.65], [20.0, 10.75], [20.53, 10.53], [20.75, 10.0], [20.65, 9.75], [20.68, 9.68], [21.03, 9.53], [21.25, 9.0], [21.13, 8.7], [21.53, 8.53], [21.75, 8.0], [21.53, 7.47], [21.18, 7.32], [21.03, 6.97], [20.68, 6.82], [20.65, 6.75], [20.75, 6.5], [20.53, 5.97], [20.18, 5.82], [20.03, 5.47], [19.68, 5.32], [19.53, 4.97], [19.18, 4.82], [19.03, 4.47], [18.5, 4.25], [18.25, 4.35], [18.18, 4.32], [18.03, 3.97], [17.5, 3.75], [17.25, 3.85], [17.0, 3.75], [16.75, 3.85], [16.5, 3.75], [16.25, 3.85], [16.0, 3.75], [15.75, 3.85], [15.5, 3.75], [14.97, 3.97], [14.75, 4.5], [14.96, 5.0], [14.82, 5.32], [14.75, 5.35], [14.5, 5.25], [13.97, 5.47], [13.75, 6.0], [13.85, 6.25], [13.75, 6.5], [13.97, 7.03]], [[16.25, 5.35], [16.18, 5.32], [16.13, 5.2], [16.25, 5.15], [16.5, 5.25], [16.25, 5.35]], [[16.75, 5.15], [16.82, 5.18], [16.85, 5.25], [16.82, 5.32], [16.75, 5.35], [16.5, 5.25], [16.75, 5.15]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.183818311709956}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.620873722805239}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.420350126717892, 23.365294642182505, 22.152413246903564, 23.10332880579898]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.117436496076266, 20.773393638298558, 19.043927126965684, 20.01982165620342]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4814969160734393, -2.1322228733119775, -3.3611775840764078, -2.4266682811146447]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6771015297819076, -3.4869840917497754, -4.183818311709956, -2.864581909161018]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5251194269671002, -1.8280595896967236, -2.7527122233673276, -1.8981060190869656]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6173734559151827, -2.3129358064705805, -3.263061707826176, -2.4735874087996157]}}