{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:51.783809", "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-Jul-04_to_2012-Jul-06_353.5_9.0"}, "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": 2012070000330}, "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": "July 04 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 60886.778269318944}, "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": ["C\u00f4te d'Ivoire", "Guinea", "Mali"]}, "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": 9.0}, "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": 353.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 349.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 355.25}, "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": 11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.53, 10.97], [-10.75, 11.5], [-10.53, 12.03], [-10.0, 12.25], [-9.75, 12.15], [-9.5, 12.25], [-8.97, 12.03], [-8.82, 11.68], [-8.75, 11.65], [-8.5, 11.75], [-8.25, 11.65], [-8.0, 11.75], [-7.47, 11.53], [-7.32, 11.18], [-7.0, 11.04], [-6.5, 11.25], [-5.97, 11.03], [-5.75, 10.5], [-5.97, 9.97], [-6.32, 9.82], [-6.35, 9.75], [-6.32, 9.68], [-5.97, 9.53], [-5.82, 9.18], [-5.75, 9.15], [-5.5, 9.25], [-5.25, 9.15], [-5.0, 9.25], [-4.47, 9.03], [-4.25, 8.5], [-4.47, 7.97], [-5.0, 7.75], [-5.25, 7.85], [-5.5, 7.75], [-5.75, 7.85], [-6.0, 7.75], [-6.25, 7.85], [-6.5, 7.75], [-7.03, 7.97], [-7.18, 8.32], [-7.25, 8.35], [-7.5, 8.25], [-8.03, 8.47], [-8.25, 9.0], [-8.12, 9.3], [-8.25, 9.35], [-8.5, 9.25], [-9.03, 9.47], [-9.25, 10.0], [-9.15, 10.25], [-9.18, 10.32], [-9.53, 10.47], [-9.68, 10.82], [-9.75, 10.85], [-10.0, 10.75], [-10.53, 10.97]]]]}, "2012-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.53, 10.97], [-10.75, 11.5], [-10.53, 12.03], [-10.0, 12.25], [-9.75, 12.15], [-9.5, 12.25], [-8.97, 12.03], [-8.82, 11.68], [-8.75, 11.65], [-8.5, 11.75], [-8.25, 11.65], [-8.0, 11.75], [-7.47, 11.53], [-7.32, 11.18], [-7.0, 11.04], [-6.5, 11.25], [-5.97, 11.03], [-5.75, 10.5], [-5.97, 9.97], [-6.32, 9.82], [-6.35, 9.75], [-6.32, 9.68], [-5.97, 9.53], [-5.82, 9.18], [-5.75, 9.15], [-5.5, 9.25], [-5.25, 9.15], [-5.0, 9.25], [-4.47, 9.03], [-4.25, 8.5], [-4.47, 7.97], [-5.0, 7.75], [-5.25, 7.85], [-5.5, 7.75], [-5.75, 7.85], [-6.0, 7.75], [-6.25, 7.85], [-6.5, 7.75], [-7.03, 7.97], [-7.18, 8.32], [-7.25, 8.35], [-7.5, 8.25], [-8.03, 8.47], [-8.25, 9.0], [-8.12, 9.3], [-8.25, 9.35], [-8.5, 9.25], [-9.03, 9.47], [-9.25, 10.0], [-9.15, 10.25], [-9.18, 10.32], [-9.53, 10.47], [-9.68, 10.82], [-9.75, 10.85], [-10.0, 10.75], [-10.53, 10.97]]]]}, "2012-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.53, 10.97], [-10.75, 11.5], [-10.53, 12.03], [-10.0, 12.25], [-9.75, 12.15], [-9.5, 12.25], [-8.97, 12.03], [-8.82, 11.68], [-8.75, 11.65], [-8.5, 11.75], [-8.25, 11.65], [-8.0, 11.75], [-7.47, 11.53], [-7.32, 11.18], [-7.0, 11.04], [-6.5, 11.25], [-5.97, 11.03], [-5.75, 10.5], [-5.97, 9.97], [-6.32, 9.82], [-6.35, 9.75], [-6.32, 9.68], [-5.97, 9.53], [-5.82, 9.18], [-5.75, 9.15], [-5.5, 9.25], [-5.25, 9.15], [-5.0, 9.25], [-4.47, 9.03], [-4.25, 8.5], [-4.47, 7.97], [-5.0, 7.75], [-5.25, 7.85], [-5.5, 7.75], [-5.75, 7.85], [-6.0, 7.75], [-6.25, 7.85], [-6.5, 7.75], [-7.03, 7.97], [-7.18, 8.32], [-7.25, 8.35], [-7.5, 8.25], [-8.03, 8.47], [-8.25, 9.0], [-8.12, 9.3], [-8.25, 9.35], [-8.5, 9.25], [-9.03, 9.47], [-9.25, 10.0], [-9.15, 10.25], [-9.18, 10.32], [-9.53, 10.47], [-9.68, 10.82], [-9.75, 10.85], [-10.0, 10.75], [-10.53, 10.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0730062107388108}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.08048641667451}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.544561229120063, 22.994956456222553, 23.7973385428474]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.537957489860275, 22.07199007741309, 22.947882760580114]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0260379434800826, -2.5335243722184346, -1.6818969343250132]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.721979296317045, -3.0730062107388108, -2.202064866273588]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9869658820450575, -2.4168836159217526, -1.6433595033297557]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7058746954164414, -3.05205300025594, -1.8597616405756483]}}