{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:30.634984", "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-Jan-05_to_2011-Jan-09_17.5_-13.5"}, "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": 2011010000389}, "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": "January 05 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 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": 190445.34369561405}, "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": ["Angola", "Namibia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-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": -13.5}, "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": 17.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 12.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.5, -12.75], [18.03, -12.97], [18.25, -13.5], [18.03, -14.03], [17.5, -14.25], [16.97, -14.03], [16.75, -13.5], [16.97, -12.97], [17.5, -12.75]]]]}, "2011-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.97, -12.47], [16.5, -12.25], [17.03, -12.47], [17.18, -12.82], [17.25, -12.85], [17.5, -12.75], [18.03, -12.97], [18.25, -13.5], [18.03, -14.03], [17.5, -14.25], [17.25, -14.15], [17.0, -14.25], [16.75, -14.15], [16.5, -14.25], [15.97, -14.03], [15.75, -13.5], [15.85, -13.25], [15.75, -13.0], [15.97, -12.47]]]]}, "2011-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.47, -17.53], [12.25, -17.0], [12.47, -16.47], [13.0, -16.25], [13.25, -16.35], [13.32, -16.32], [13.47, -15.97], [13.82, -15.82], [13.85, -15.75], [13.82, -15.68], [13.47, -15.53], [13.25, -15.0], [13.47, -14.47], [14.0, -14.25], [14.25, -14.35], [14.32, -14.32], [14.47, -13.97], [15.0, -13.75], [15.25, -13.85], [15.5, -13.75], [15.75, -13.85], [15.82, -13.82], [15.85, -13.75], [15.75, -13.5], [15.85, -13.25], [15.75, -13.0], 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{"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5963765388497677, -1.3865082211540312, -3.0042786287005168, -3.941031261995586, -2.791690785070737]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5963765388497677, -1.4383859803345445, -4.207394049904053, -4.66702475069053, -3.806698651044428]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5312185483573095, -1.3788634466192304, -1.5601839964258444, -2.0763802878702102, -1.4132282270672119]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5312185483573095, -1.4244380207469747, -2.0701409663806034, -2.8456987935457514, -1.647050043438943]}}