{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:35.828825", "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": "2011-Oct-14_to_2011-Oct-18_46.5_-20.0"}, "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": 2011100000682}, "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 14 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 18 2011"}, "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": 72844.50874903466}, "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": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "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": -20.0}, "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": 46.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 44.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.5, -19.25], [47.03, -19.47], [47.25, -20.0], [47.03, -20.53], [46.5, -20.75], [45.97, -20.53], [45.75, -20.0], [45.97, -19.47], [46.5, -19.25]]]]}, "2011-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.35, -19.75], [45.25, -19.5], [45.35, -19.25], [45.25, -19.0], [45.47, -18.47], [45.82, -18.32], [45.97, -17.97], [46.5, -17.75], [47.03, -17.97], [47.18, -18.32], [47.53, -18.47], [47.75, -19.0], [47.65, -19.25], [47.75, -19.5], [47.53, -20.03], [47.18, -20.18], [47.03, -20.53], [46.68, -20.68], [46.53, -21.03], [46.0, -21.25], [45.57, -21.07], [45.75, -21.5], [45.53, -22.03], [45.0, -22.25], [44.47, -22.03], [44.25, -21.5], [44.47, -20.97], [45.0, -20.75], [45.43, -20.93], [45.25, -20.5], [45.35, -20.25], [45.25, -20.0], [45.35, -19.75]]]]}, "2011-10-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, -18.25], [44.25, -18.0], [44.35, -17.75], [44.25, -17.5], [44.47, -16.97], [45.0, -16.75], [45.53, -16.97], [45.68, -17.32], [45.75, -17.35], [46.0, -17.25], [46.25, -17.35], [46.5, -17.25], [47.03, -17.47], [47.25, -18.0], [47.15, -18.25], [47.18, -18.32], [47.53, -18.47], [47.75, -19.0], [47.65, -19.25], [47.75, -19.5], [47.53, -20.03], [47.18, -20.18], [47.04, -20.5], [47.25, -21.0], [47.03, -21.53], [46.5, -21.75], [46.25, -21.65], [46.18, -21.68], [46.15, -21.75], [46.25, -22.0], [46.03, -22.53], [45.5, -22.75], [44.97, -22.53], [44.82, -22.18], [44.47, -22.03], [44.25, -21.5], [44.47, -20.97], [44.82, -20.82], [44.97, -20.47], [45.32, -20.32], [45.35, -20.25], [45.25, -20.0], [45.35, -19.75], [45.3, -19.62], [45.0, -19.75], [44.47, -19.53], [44.25, -19.0], [44.35, -18.75], [44.25, -18.5], [44.35, -18.25]]]]}, "2011-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, -18.25], [44.25, -18.0], [44.35, -17.75], [44.25, -17.5], [44.47, -16.97], [45.0, -16.75], [45.53, -16.97], [45.68, -17.32], [45.75, -17.35], [46.0, -17.25], [46.25, -17.35], [46.5, -17.25], [47.03, -17.47], [47.25, -18.0], [47.15, -18.25], [47.18, -18.32], [47.53, -18.47], 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"Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.559332571316475, 14.36325171012453, 14.088185280275866, 14.095420024312773, 19.07409317328387]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8031058285908443, -2.178963915459039, -2.757509476607413, -2.99551909850318, -2.021434716698664]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8031058285908443, -2.54491722576671, -4.4974565576532655, -4.2624124251419175, -2.6235738574953302]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2731793306017423, -1.5740295721753776, -2.043597831849434, -2.2907962659630328, -1.561527094052834]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2731793306017423, -1.8521004704455948, -2.6977282272556686, -2.9412073980007887, -2.058810661157707]}}