{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:14.061826", "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": "2013-Jan-04_to_2013-Jan-06_19.5_-9.5"}, "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": 2013010000219}, "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 04 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 06 2013"}, "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": 63936.926287446746}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "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": -9.5}, "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": 19.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 15.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 20.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, -10.03], [15.25, -9.5], [15.47, -8.97], [16.0, -8.75], [16.25, -8.85], [16.32, -8.82], [16.47, -8.47], [17.0, -8.25], [17.25, -8.35], [17.5, -8.25], [18.03, -8.47], [18.18, -8.82], [18.25, -8.85], [18.5, -8.75], [18.75, -8.85], [19.0, -8.75], [19.25, -8.85], [19.5, -8.75], [19.75, -8.85], [20.0, -8.75], [20.53, -8.97], [20.75, -9.5], [20.53, -10.03], [20.18, -10.18], [20.15, -10.25], [20.25, -10.5], [20.15, -10.75], [20.25, -11.0], [20.03, -11.53], [19.5, -11.75], [19.25, -11.65], [19.0, -11.75], [18.75, -11.65], [18.5, -11.75], [17.97, -11.53], [17.82, -11.18], [17.47, -11.03], [17.32, -10.68], [17.25, -10.65], [17.0, -10.75], [16.47, -10.53], [16.32, -10.18], [16.25, -10.15], [16.0, -10.25], [15.47, -10.03]]]]}, "2013-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, -10.03], [15.25, -9.5], [15.47, -8.97], [16.0, -8.75], [16.25, -8.85], [16.32, -8.82], [16.47, -8.47], [17.0, -8.25], [17.25, -8.35], [17.5, -8.25], [18.03, -8.47], [18.18, -8.82], [18.25, -8.85], [18.5, -8.75], [18.75, -8.85], [19.0, -8.75], [19.25, -8.85], [19.5, -8.75], [19.75, -8.85], [20.0, -8.75], [20.53, -8.97], [20.75, -9.5], [20.53, -10.03], [20.18, -10.18], [20.15, -10.25], [20.25, -10.5], [20.15, -10.75], [20.25, -11.0], [20.03, -11.53], [19.5, -11.75], [19.25, -11.65], [19.0, -11.75], [18.75, -11.65], [18.5, -11.75], [17.97, -11.53], [17.82, -11.18], [17.47, -11.03], [17.32, -10.68], [17.25, -10.65], [17.0, -10.75], [16.47, -10.53], [16.32, -10.18], [16.25, -10.15], [16.0, -10.25], [15.47, -10.03]]]]}, "2013-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, -10.03], [15.25, -9.5], [15.47, -8.97], [16.0, -8.75], [16.25, -8.85], [16.32, -8.82], [16.47, -8.47], [17.0, -8.25], [17.25, -8.35], [17.5, -8.25], [18.03, -8.47], [18.18, -8.82], [18.25, -8.85], [18.5, -8.75], [18.75, -8.85], [19.0, -8.75], [19.25, -8.85], [19.5, -8.75], [19.75, -8.85], [20.0, -8.75], [20.53, -8.97], [20.75, -9.5], [20.53, -10.03], [20.18, -10.18], [20.15, -10.25], [20.25, -10.5], [20.15, -10.75], [20.25, -11.0], [20.03, -11.53], [19.5, -11.75], [19.25, -11.65], [19.0, -11.75], [18.75, -11.65], [18.5, -11.75], [17.97, -11.53], [17.82, -11.18], [17.47, -11.03], [17.32, -10.68], [17.25, -10.65], [17.0, -10.75], [16.47, -10.53], [16.32, -10.18], [16.25, -10.15], [16.0, -10.25], [15.47, -10.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.88162200131336}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9324430508924422}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.670679685104915, 19.99867173844251, 20.13045856946053]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.878245119738892, 18.172902301056865, 18.51951611309562]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1833042104139047, -1.8709912188044877, -1.743033723458934]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.88162200131336, -2.281973657814433, -2.204121443098643]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2429552498646887, -1.9120556834838378, -1.7872225804144835]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.821959505030857, -2.2403097449655927, -2.360822671628025]}}