{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:58.813079", "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": "2015-Oct-19_to_2015-Oct-23_345.5_22.0"}, "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": 2015100000468}, "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": "October 19 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 23 2015"}, "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": 120759.36846388207}, "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": ["Mauritania", "Morocco"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 22.0}, "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": 345.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "345.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 343.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 347.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.03, 23.03], [-15.5, 23.25], [-15.25, 23.15], [-15.18, 23.18], [-15.03, 23.53], [-14.5, 23.75], [-14.25, 23.65], [-14.0, 23.75], [-13.47, 23.53], [-13.25, 23.0], [-13.35, 22.75], [-13.25, 22.5], [-13.47, 21.97], [-13.82, 21.82], [-13.97, 21.47], [-14.5, 21.25], [-14.75, 21.35], [-15.0, 21.25], [-15.25, 21.35], [-15.5, 21.25], [-16.03, 21.47], [-16.25, 22.0], [-16.15, 22.25], [-16.25, 22.5], [-16.03, 23.03]]]]}, "2015-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.75, 22.0], [-16.53, 22.53], [-16.18, 22.68], [-16.03, 23.03], [-15.5, 23.25], [-15.25, 23.15], [-15.18, 23.18], [-15.03, 23.53], [-14.5, 23.75], [-14.25, 23.65], [-14.0, 23.75], [-13.47, 23.53], [-13.25, 23.0], [-13.35, 22.75], [-13.25, 22.5], [-13.47, 21.97], [-13.82, 21.82], [-13.97, 21.47], [-14.32, 21.32], [-14.47, 20.97], [-14.82, 20.82], [-14.97, 20.47], [-15.5, 20.25], [-15.75, 20.35], [-16.0, 20.25], [-16.25, 20.35], [-16.5, 20.25], [-17.03, 20.47], [-17.25, 21.0], [-17.03, 21.53], [-16.68, 21.68], [-16.65, 21.75], [-16.75, 22.0]]]]}, "2015-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.75, 22.0], [-16.53, 22.53], [-16.18, 22.68], [-16.03, 23.03], [-15.5, 23.25], [-15.25, 23.15], [-15.18, 23.18], [-15.03, 23.53], [-14.5, 23.75], [-14.25, 23.65], [-14.0, 23.75], [-13.75, 23.65], [-13.68, 23.68], [-13.53, 24.03], [-13.0, 24.25], [-12.75, 24.15], [-12.5, 24.25], [-11.97, 24.03], [-11.75, 23.5], [-11.97, 22.97], [-12.32, 22.82], [-12.35, 22.75], [-12.25, 22.5], [-12.46, 22.0], [-12.25, 21.5], [-12.46, 21.0], [-12.25, 20.5], [-12.47, 19.97], [-12.82, 19.82], [-12.97, 19.47], [-13.5, 19.25], [-13.75, 19.35], [-13.82, 19.32], [-13.97, 18.97], [-14.32, 18.82], [-14.47, 18.47], [-15.0, 18.25], [-15.53, 18.47], [-15.75, 19.0], [-15.65, 19.25], [-15.75, 19.5], [-15.53, 20.03], [-15.18, 20.18], [-15.15, 20.25], [-15.18, 20.32], [-15.25, 20.35], [-15.5, 20.25], [-15.75, 20.35], [-16.0, 20.25], [-16.25, 20.35], [-16.5, 20.25], [-17.03, 20.47], [-17.25, 21.0], [-17.03, 21.53], [-16.68, 21.68], [-16.65, 21.75], [-16.75, 22.0]]]]}, "2015-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.75, 22.0], [-16.53, 22.53], [-16.18, 22.68], [-16.03, 23.03], [-15.5, 23.25], [-15.25, 23.15], [-15.18, 23.18], [-15.03, 23.53], [-14.5, 23.75], [-14.25, 23.65], [-14.0, 23.75], [-13.75, 23.65], [-13.68, 23.68], [-13.53, 24.03], [-13.0, 24.25], [-12.75, 24.15], [-12.5, 24.25], [-11.97, 24.03], [-11.75, 23.5], [-11.97, 22.97], [-12.32, 22.82], [-12.35, 22.75], [-12.25, 22.5], [-12.46, 22.0], [-12.25, 21.5], [-12.46, 21.0], [-12.25, 20.5], [-12.47, 19.97], [-12.82, 19.82], [-12.97, 19.47], [-13.5, 19.25], [-13.75, 19.35], [-13.82, 19.32], [-13.97, 18.97], [-14.32, 18.82], [-14.47, 18.47], [-15.0, 18.25], [-15.53, 18.47], [-15.75, 19.0], [-15.65, 19.25], [-15.75, 19.5], [-15.53, 20.03], [-15.18, 20.18], [-15.15, 20.25], [-15.18, 20.32], [-15.25, 20.35], [-15.5, 20.25], [-15.75, 20.35], [-16.0, 20.25], [-16.25, 20.35], [-16.5, 20.25], [-17.03, 20.47], [-17.25, 21.0], [-17.03, 21.53], [-16.68, 21.68], [-16.65, 21.75], [-16.75, 22.0]]]]}, "2015-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.25, 21.5], [-16.03, 22.03], [-15.68, 22.18], [-15.53, 22.53], [-15.18, 22.68], [-15.03, 23.03], [-14.68, 23.18], [-14.53, 23.53], [-14.0, 23.75], [-13.75, 23.65], [-13.68, 23.68], [-13.53, 24.03], [-13.0, 24.25], [-12.75, 24.15], [-12.5, 24.25], [-11.97, 24.03], [-11.75, 23.5], [-11.97, 22.97], [-12.32, 22.82], [-12.35, 22.75], [-12.25, 22.5], [-12.46, 22.0], [-12.25, 21.5], [-12.46, 21.0], [-12.25, 20.5], [-12.47, 19.97], [-12.82, 19.82], [-12.97, 19.47], [-13.5, 19.25], [-13.75, 19.35], [-13.82, 19.32], [-13.97, 18.97], [-14.32, 18.82], [-14.47, 18.47], [-15.0, 18.25], [-15.53, 18.47], [-15.75, 19.0], [-15.65, 19.25], [-15.75, 19.5], [-15.53, 20.03], [-15.18, 20.18], [-15.15, 20.25], [-15.18, 20.32], [-15.53, 20.47], [-15.68, 20.82], [-16.03, 20.97], [-16.25, 21.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.398453492088208}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.832475587863186}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.96664213329376, 22.980036688665223, 23.300272406197053, 22.91856840159153, 23.547126397675072]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.07001003262104, 21.949944462583915, 20.294250940102074, 21.150314891690016, 20.989134880162453]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.245361565272144, -4.45827607298402, -4.901597574392305, -5.126301770218179, -4.712093628719343]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.62329573014199, -5.017534976820173, -6.398453492088208, -6.154267701160677, -5.121686683567248]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5513206549688665, -1.5924278393973572, -1.8221301713498743, -1.8728662621501553, -1.6672012515155559]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6868781359973641, -1.7871855433113946, -2.245951647521954, -2.568421323232835, -2.003042385676596]}}