{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:18.740154", "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-09_to_2010-Dec-13_357.5_10.5"}, "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": 2010120000492}, "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 09 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 13 2010"}, "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": 130640.85527716539}, "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": ["Benin", "Burkina Faso", "C\u00f4te d'Ivoire", "Ghana", "Mali", "Togo"]}, "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": 10.5}, "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": 357.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 354.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 361.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.75}, "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": {"2010-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 8.97], [-1.25, 9.5], [-1.03, 10.03], [-0.5, 10.25], [0.03, 10.03], [0.25, 9.5], [0.03, 8.97], [-0.5, 8.75], [-1.03, 8.97]]], [[[-2.5, 11.75], [-2.25, 11.65], [-2.0, 11.75], [-1.47, 11.53], [-1.25, 11.0], [-1.47, 10.47], [-1.82, 10.32], [-1.97, 9.97], [-2.5, 9.75], [-3.03, 9.97], [-3.25, 10.5], [-3.15, 10.75], [-3.25, 11.0], [-3.03, 11.53], [-2.5, 11.75]]]]}, "2010-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 12.03], [-4.0, 12.25], [-3.75, 12.15], [-3.5, 12.25], [-2.97, 12.03], [-2.82, 11.68], [-2.75, 11.65], [-2.5, 11.75], [-2.25, 11.65], [-2.0, 11.75], [-1.75, 11.65], [-1.5, 11.75], [-0.97, 11.53], [-0.82, 11.18], [-0.47, 11.03], [-0.3, 10.62], [0.0, 10.75], [0.53, 10.53], [0.68, 10.18], [1.03, 10.03], [1.25, 9.5], [1.03, 8.97], [0.5, 8.75], [0.0, 8.96], [-0.5, 8.75], [-0.75, 8.85], [-1.0, 8.75], [-1.53, 8.97], [-1.7, 9.38], [-2.0, 9.25], [-2.53, 9.47], [-2.68, 9.82], [-2.75, 9.85], [-3.0, 9.75], [-3.25, 9.85], [-3.5, 9.75], [-4.03, 9.97], [-4.18, 10.32], [-4.53, 10.47], [-4.75, 11.0], [-4.65, 11.25], [-4.75, 11.5], [-4.53, 12.03]]]]}, "2010-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.03, 11.47], [-6.25, 12.0], [-6.03, 12.53], [-5.5, 12.75], [-5.25, 12.65], [-5.0, 12.75], [-4.75, 12.65], [-4.5, 12.75], [-4.25, 12.65], [-4.0, 12.75], [-3.75, 12.65], [-3.5, 12.75], [-2.97, 12.53], [-2.82, 12.18], [-2.75, 12.15], [-2.5, 12.25], [-2.25, 12.15], [-2.0, 12.25], [-1.75, 12.15], [-1.5, 12.25], [-0.97, 12.03], [-0.75, 11.5], [-0.85, 11.25], [-0.82, 11.18], [-0.47, 11.03], [-0.3, 10.62], [0.0, 10.75], [0.5, 10.54], [1.0, 10.75], [1.25, 10.65], [1.5, 10.75], [2.03, 10.53], [2.25, 10.0], [2.03, 9.47], [1.5, 9.25], [1.25, 9.35], [1.18, 9.32], [1.03, 8.97], [0.68, 8.82], [0.53, 8.47], [0.0, 8.25], [-0.25, 8.35], [-0.5, 8.25], [-1.03, 8.47], [-1.18, 8.82], [-1.5, 8.96], [-2.0, 8.75], [-2.25, 8.85], [-2.5, 8.75], [-3.0, 8.96], [-3.5, 8.75], [-4.03, 8.97], [-4.25, 9.5], [-4.15, 9.75], [-4.18, 9.82], [-4.25, 9.85], [-4.5, 9.75], [-5.03, 9.97], [-5.25, 10.5], [-5.04, 11.0], [-5.18, 11.32], [-5.25, 11.35], [-5.5, 11.25], [-6.03, 11.47]]]]}, "2010-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.03, 11.47], [-6.25, 12.0], [-6.03, 12.53], [-5.5, 12.75], [-5.25, 12.65], [-5.0, 12.75], [-4.75, 12.65], [-4.5, 12.75], [-4.25, 12.65], [-4.0, 12.75], [-3.75, 12.65], [-3.5, 12.75], [-2.97, 12.53], [-2.82, 12.18], [-2.75, 12.15], [-2.5, 12.25], [-2.25, 12.15], [-2.0, 12.25], [-1.75, 12.15], [-1.5, 12.25], [-0.97, 12.03], [-0.75, 11.5], [-0.85, 11.25], [-0.82, 11.18], [-0.47, 11.03], [-0.3, 10.62], [0.0, 10.75], [0.5, 10.54], [1.0, 10.75], [1.25, 10.65], [1.5, 10.75], [2.03, 10.53], [2.25, 10.0], [2.03, 9.47], [1.5, 9.25], [1.25, 9.35], [1.18, 9.32], [1.03, 8.97], [0.68, 8.82], [0.53, 8.47], [0.0, 8.25], [-0.25, 8.35], [-0.5, 8.25], [-1.03, 8.47], [-1.18, 8.82], [-1.5, 8.96], [-2.0, 8.75], [-2.25, 8.85], [-2.5, 8.75], [-3.0, 8.96], [-3.5, 8.75], [-4.03, 8.97], [-4.25, 9.5], [-4.15, 9.75], [-4.18, 9.82], [-4.25, 9.85], [-4.5, 9.75], [-5.03, 9.97], [-5.25, 10.5], [-5.04, 11.0], [-5.18, 11.32], [-5.25, 11.35], [-5.5, 11.25], [-6.03, 11.47]]]]}, "2010-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.03, 11.47], [-6.25, 12.0], [-6.03, 12.53], [-5.5, 12.75], [-5.25, 12.65], [-5.0, 12.75], [-4.75, 12.65], [-4.5, 12.75], [-4.25, 12.65], [-4.0, 12.75], [-3.75, 12.65], [-3.5, 12.75], [-2.97, 12.53], [-2.82, 12.18], [-2.75, 12.15], [-2.5, 12.25], [-2.25, 12.15], [-2.0, 12.25], [-1.75, 12.15], [-1.5, 12.25], [-0.97, 12.03], [-0.75, 11.5], [-0.85, 11.25], [-0.82, 11.18], [-0.47, 11.03], [-0.3, 10.62], [0.0, 10.75], [0.5, 10.54], [1.0, 10.75], [1.25, 10.65], [1.5, 10.75], [2.03, 10.53], [2.25, 10.0], [2.03, 9.47], [1.5, 9.25], [1.25, 9.35], [1.0, 9.25], [0.7, 9.38], [0.65, 9.25], [0.75, 9.0], [0.53, 8.47], [0.0, 8.25], [-0.25, 8.35], [-0.5, 8.25], [-1.03, 8.47], [-1.18, 8.82], [-1.5, 8.96], [-2.0, 8.75], [-2.25, 8.85], [-2.5, 8.75], [-3.0, 8.96], [-3.5, 8.75], [-4.03, 8.97], [-4.25, 9.5], [-4.15, 9.75], [-4.18, 9.82], [-4.25, 9.85], [-4.5, 9.75], [-5.03, 9.97], [-5.25, 10.5], [-5.04, 11.0], [-5.18, 11.32], [-5.25, 11.35], [-5.5, 11.25], [-6.03, 11.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7097702646827884}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4185017431703617}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.191844302663128, 25.12152614677325, 24.446636740195288, 24.11671618646102, 24.716581827274013]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.877458452340534, 24.57988620655783, 23.393762831744482, 22.53611782894103, 23.752744206595935]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8464118435690722, -1.9725288591583734, -2.467519275309448, -2.8094733811403283, -2.234889432788354]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2660350229084543, -2.537162758961813, -3.040413248261757, -3.7097702646827884, -2.9054121243794953]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4307236883563357, -1.5003952916989252, -1.9402483305218512, -2.210225531101108, -1.701996868834807]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6518729160499914, -1.7819244456255041, -2.305919906115451, -3.085273713875057, -2.310062958593628]}}