{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:19.898963", "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-Jan-14_to_2012-Jan-18_358.0_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": 2012010000756}, "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": "January 14 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 18 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": 66942.74811564927}, "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": ["Burkina Faso", "C\u00f4te d'Ivoire", "Ghana"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-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": 358.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "358.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 355.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.75, 12.0], [-4.53, 12.53], [-4.0, 12.75], [-3.75, 12.65], [-3.5, 12.75], [-3.25, 12.65], [-3.0, 12.75], [-2.47, 12.53], [-2.25, 12.0], [-2.35, 11.75], [-2.32, 11.68], [-1.97, 11.53], [-1.82, 11.18], [-1.47, 11.03], [-1.25, 10.5], [-1.46, 10.0], [-1.32, 9.68], [-0.97, 9.53], [-0.75, 9.0], [-0.85, 8.75], [-0.75, 8.5], [-0.97, 7.97], [-1.5, 7.75], [-1.75, 7.85], [-2.0, 7.75], [-2.25, 7.85], [-2.5, 7.75], [-3.03, 7.97], [-3.18, 8.32], [-3.53, 8.47], [-3.75, 9.0], [-3.62, 9.3], [-4.03, 9.47], [-4.25, 10.0], [-4.03, 10.53], [-3.68, 10.68], [-3.62, 10.8], [-4.03, 10.97], [-4.18, 11.32], [-4.53, 11.47], [-4.75, 12.0]]]]}, "2012-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.75, 12.0], [-4.53, 12.53], [-4.0, 12.75], [-3.75, 12.65], [-3.5, 12.75], [-3.25, 12.65], [-3.0, 12.75], [-2.47, 12.53], [-2.25, 12.0], [-2.35, 11.75], [-2.32, 11.68], [-1.97, 11.53], [-1.82, 11.18], [-1.47, 11.03], [-1.25, 10.5], [-1.46, 10.0], [-1.32, 9.68], [-0.97, 9.53], [-0.75, 9.0], [-0.85, 8.75], [-0.75, 8.5], [-0.97, 7.97], [-1.5, 7.75], [-1.75, 7.85], [-2.0, 7.75], [-2.25, 7.85], [-2.5, 7.75], [-3.03, 7.97], [-3.18, 8.32], [-3.53, 8.47], [-3.75, 9.0], [-3.65, 9.25], [-3.68, 9.32], [-4.03, 9.47], [-4.25, 10.0], [-4.03, 10.53], [-3.68, 10.68], [-3.62, 10.8], [-4.03, 10.97], [-4.18, 11.32], [-4.53, 11.47], [-4.75, 12.0]]]]}, "2012-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.75, 12.0], [-4.53, 12.53], [-4.0, 12.75], [-3.75, 12.65], [-3.5, 12.75], [-3.25, 12.65], [-3.0, 12.75], [-2.47, 12.53], [-2.25, 12.0], [-2.35, 11.75], [-2.32, 11.68], [-1.97, 11.53], [-1.82, 11.18], [-1.47, 11.03], [-1.25, 10.5], [-1.46, 10.0], [-1.32, 9.68], [-0.97, 9.53], [-0.75, 9.0], [-0.85, 8.75], [-0.75, 8.5], [-0.97, 7.97], [-1.5, 7.75], [-1.75, 7.85], [-2.0, 7.75], [-2.25, 7.85], [-2.5, 7.75], [-3.03, 7.97], [-3.18, 8.32], [-3.53, 8.47], [-3.75, 9.0], [-3.65, 9.25], [-3.68, 9.32], [-4.03, 9.47], [-4.25, 10.0], [-4.03, 10.53], [-3.68, 10.68], [-3.62, 10.8], [-4.03, 10.97], [-4.18, 11.32], [-4.53, 11.47], [-4.75, 12.0]]]]}, "2012-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.65, 9.75], [-3.75, 10.0], [-3.53, 10.53], [-3.0, 10.75], [-2.75, 10.65], [-2.5, 10.75], [-1.97, 10.53], [-1.82, 10.18], [-1.47, 10.03], [-1.32, 9.68], [-0.97, 9.53], [-0.75, 9.0], [-0.97, 8.47], [-1.32, 8.32], [-1.47, 7.97], [-2.0, 7.75], [-2.25, 7.85], [-2.5, 7.75], [-3.03, 7.97], [-3.18, 8.32], [-3.53, 8.47], [-3.75, 9.0], [-3.65, 9.25], [-3.75, 9.5], [-3.65, 9.75]]]]}, "2012-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.75, 9.0], [-3.53, 9.53], [-3.0, 9.75], [-2.75, 9.65], [-2.5, 9.75], [-2.25, 9.65], [-2.0, 9.75], [-1.75, 9.65], [-1.5, 9.75], [-0.97, 9.53], [-0.75, 9.0], [-0.97, 8.47], [-1.32, 8.32], [-1.47, 7.97], [-2.0, 7.75], [-2.25, 7.85], [-2.5, 7.75], [-3.03, 7.97], [-3.18, 8.32], [-3.53, 8.47], [-3.75, 9.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.224175914956163}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3934476141521492}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.236396714142302, 24.089070484482022, 24.320225134893633, 24.999047137036086, 24.934959401722438]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.745825661222227, 22.601487906477246, 22.798700546401562, 24.442361749833083, 24.32733217008024]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3264973504486846, -2.585218322238495, -2.43047979255289, -2.087283387588462, -2.338972324744475]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7391090151089657, -2.9823057580300087, -2.7866286853277984, -2.293215072183216, -3.224175914956163]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5111537648751032, -1.7269916898198652, -1.6647090370942002, -1.5917738466084268, -1.8272547264434085]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.680461227904256, -2.014499191158032, -1.877703240482232, -1.7416137089915291, -2.507677516804404]}}