{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:01:51.589095", "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-Dec-07_to_2014-Dec-11_1.0_35.5"}, "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": 2014120000381}, "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 07 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 11 2014"}, "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": 58373.120563726196}, "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": ["Algeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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": 35.5}, "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": 1.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "1.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -0.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 3.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 36.03], [1.0, 36.25], [1.25, 36.15], [1.32, 36.18], [1.47, 36.53], [2.0, 36.75], [2.25, 36.65], [2.5, 36.75], [3.03, 36.53], [3.25, 36.0], [3.03, 35.47], [2.68, 35.32], [2.65, 35.25], [2.7, 35.13], [3.0, 35.25], [3.53, 35.03], [3.75, 34.5], [3.53, 33.97], [3.0, 33.75], [2.47, 33.97], [2.3, 34.38], [2.0, 34.25], [1.75, 34.35], [1.5, 34.25], [1.25, 34.35], [1.0, 34.25], [0.75, 34.35], [0.5, 34.25], [0.25, 34.35], [0.0, 34.25], [-0.53, 34.47], [-0.75, 35.0], [-0.53, 35.53], [0.0, 35.75], [0.25, 35.65], [0.32, 35.68], [0.47, 36.03]]]]}, "2014-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 36.03], [1.0, 36.25], [1.25, 36.15], [1.32, 36.18], [1.47, 36.53], [2.0, 36.75], [2.25, 36.65], [2.5, 36.75], [3.03, 36.53], [3.25, 36.0], [3.12, 35.7], [3.25, 35.65], [3.5, 35.75], [4.03, 35.53], [4.25, 35.0], [4.15, 34.75], [4.25, 34.5], [4.03, 33.97], [3.68, 33.82], [3.53, 33.47], [3.0, 33.25], [2.75, 33.35], [2.5, 33.25], [2.25, 33.35], [2.0, 33.25], [1.75, 33.35], [1.5, 33.25], [1.25, 33.35], [1.0, 33.25], [0.47, 33.47], [0.25, 34.0], [0.35, 34.25], [0.32, 34.32], [0.25, 34.35], [0.0, 34.25], [-0.53, 34.47], [-0.75, 35.0], [-0.53, 35.53], [0.0, 35.75], [0.25, 35.65], [0.32, 35.68], [0.47, 36.03]]]]}, "2014-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 36.03], [1.0, 36.25], [1.25, 36.15], [1.32, 36.18], [1.47, 36.53], [2.0, 36.75], [2.25, 36.65], [2.5, 36.75], [3.03, 36.53], [3.25, 36.0], [3.12, 35.7], [3.25, 35.65], [3.5, 35.75], [4.03, 35.53], [4.25, 35.0], [4.15, 34.75], [4.25, 34.5], [4.03, 33.97], [3.68, 33.82], [3.53, 33.47], [3.0, 33.25], [2.75, 33.35], [2.5, 33.25], [2.25, 33.35], [2.0, 33.25], [1.75, 33.35], [1.5, 33.25], [1.25, 33.35], [1.0, 33.25], [0.47, 33.47], [0.25, 34.0], [0.35, 34.25], [0.32, 34.32], [0.25, 34.35], [0.0, 34.25], [-0.53, 34.47], [-0.75, 35.0], [-0.53, 35.53], [0.0, 35.75], [0.25, 35.65], [0.32, 35.68], [0.47, 36.03]]]]}, "2014-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 36.03], [1.0, 36.25], [1.25, 36.15], [1.5, 36.25], [1.75, 36.15], [1.82, 36.18], [1.97, 36.53], [2.5, 36.75], [3.03, 36.53], [3.25, 36.0], [3.12, 35.7], [3.25, 35.65], [3.5, 35.75], [4.03, 35.53], [4.25, 35.0], [4.15, 34.75], [4.25, 34.5], [4.03, 33.97], [3.68, 33.82], [3.53, 33.47], [3.0, 33.25], [2.75, 33.35], [2.5, 33.25], [2.25, 33.35], [2.0, 33.25], [1.75, 33.35], [1.5, 33.25], [1.25, 33.35], [1.0, 33.25], [0.47, 33.47], [0.25, 34.0], [0.35, 34.25], [0.32, 34.32], [0.25, 34.35], [0.0, 34.25], [-0.53, 34.47], [-0.75, 35.0], [-0.53, 35.53], [0.0, 35.75], [0.25, 35.65], [0.32, 35.68], [0.47, 36.03]]]]}, "2014-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 36.03], [1.0, 36.25], [1.25, 36.15], [1.5, 36.25], [1.75, 36.15], [1.82, 36.18], [1.97, 36.53], [2.5, 36.75], [3.03, 36.53], [3.25, 36.0], [3.12, 35.7], [3.25, 35.65], [3.5, 35.75], [4.03, 35.53], [4.25, 35.0], [4.03, 34.47], [3.5, 34.25], [3.25, 34.35], [3.18, 34.32], [3.03, 33.97], [2.5, 33.75], [2.25, 33.85], [2.18, 33.82], [2.03, 33.47], [1.5, 33.25], [1.25, 33.35], [1.0, 33.25], [0.47, 33.47], [0.25, 34.0], [0.35, 34.25], [0.32, 34.32], [0.25, 34.35], [0.0, 34.25], [-0.53, 34.47], [-0.75, 35.0], [-0.53, 35.53], [0.0, 35.75], [0.25, 35.65], [0.32, 35.68], [0.47, 36.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.920651579509865}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.642989895760632}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.927815890677266, 3.983456223273947, 4.1440506497634715, 4.032248801681931, 4.2194620577403725]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.0862279864754214, 1.7444134988937208, 2.049030635358122, 1.8100314359089111, 2.109980362425347]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.575068718820567, -3.8299057907934926, -3.59053955339932, -3.5992405404016794, -3.5616317223954583]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.079132185884873, -4.920651579509865, -4.156622156456251, -4.316135226210292, -4.649468663569337]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4821923648023878, -1.589797824058797, -1.4777063415344924, -1.5020875441195052, -1.5441880744483232]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7379851365300576, -1.9106583731567504, -1.724261301992965, -1.6953908444693002, -1.9301383711097582]}}