{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:05.713063", "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": "2015-Jan-17_to_2015-Jan-19_16.0_-10.0"}, "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": 2015010000805}, "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 17 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 19 2015"}, "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": 57797.45585281936}, "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": -10.0}, "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": 16.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.25}, "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": {"2015-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.25, -9.5], [13.47, -8.97], [13.82, -8.82], [13.97, -8.47], [14.5, -8.25], [15.03, -8.47], [15.18, -8.82], [15.25, -8.85], [15.32, -8.82], [15.47, -8.47], [16.0, -8.25], [16.53, -8.47], [16.68, -8.82], [17.03, -8.97], [17.25, -9.5], [17.15, -9.75], [17.25, -10.0], [17.03, -10.53], [16.5, -10.75], [16.25, -10.65], [16.18, -10.68], [16.15, -10.75], [16.18, -10.82], [16.53, -10.97], [16.75, -11.5], [16.65, -11.75], [16.75, -12.0], [16.53, -12.53], [16.0, -12.75], [15.75, -12.65], [15.5, -12.75], [14.97, -12.53], [14.75, -12.0], [14.85, -11.75], [14.75, -11.5], [14.85, -11.25], [14.75, -11.0], [14.85, -10.75], [14.82, -10.68], [14.75, -10.65], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.25, -9.5]]]]}, "2015-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.25, -9.5], [13.47, -8.97], [13.82, -8.82], [13.97, -8.47], [14.5, -8.25], [15.03, -8.47], [15.18, -8.82], [15.25, -8.85], [15.32, -8.82], [15.47, -8.47], [16.0, -8.25], [16.53, -8.47], [16.68, -8.82], [17.03, -8.97], [17.25, -9.5], [17.15, -9.75], [17.25, -10.0], [17.03, -10.53], [16.5, -10.75], [16.25, -10.65], [16.18, -10.68], [16.15, -10.75], [16.18, -10.82], [16.53, -10.97], [16.75, -11.5], [16.65, -11.75], [16.75, -12.0], [16.53, -12.53], [16.0, -12.75], [15.75, -12.65], [15.5, -12.75], [14.97, -12.53], [14.75, -12.0], [14.85, -11.75], [14.75, -11.5], [14.85, -11.25], [14.75, -11.0], [14.85, -10.75], [14.82, -10.68], [14.75, -10.65], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.25, -9.5]]]]}, "2015-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.25, -9.5], [13.47, -8.97], [13.82, -8.82], [13.97, -8.47], [14.5, -8.25], [15.03, -8.47], [15.18, -8.82], [15.25, -8.85], [15.32, -8.82], [15.47, -8.47], [16.0, -8.25], [16.53, -8.47], [16.68, -8.82], [17.03, -8.97], [17.25, -9.5], [17.15, -9.75], [17.25, -10.0], [17.03, -10.53], [16.5, -10.75], [16.25, -10.65], [16.18, -10.68], [16.15, -10.75], [16.18, -10.82], [16.53, -10.97], [16.75, -11.5], [16.65, -11.75], [16.75, -12.0], [16.53, -12.53], [16.0, -12.75], [15.75, -12.65], [15.5, -12.75], [14.97, -12.53], [14.75, -12.0], [14.85, -11.75], [14.75, -11.5], [14.85, -11.25], [14.75, -11.0], [14.85, -10.75], [14.82, -10.68], [14.75, -10.65], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.25, -9.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1811214949750592}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.186252025921576}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.591857682512455, 19.691429256097706, 20.37123782757618]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.88812120261531, 16.827149011096765, 16.628300024474697]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4062579008302003, -2.389049325155976, -1.7634488517785514]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.848656189903636, -3.1811214949750592, -2.182071010819641]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.441875152862694, -2.539121756784119, -1.7977195975296938]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.773665854429958, -3.470268515884437, -2.279236564738]}}