{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:50:46.013618", "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": "2024-Jan-15_to_2024-Jan-17_17.0_-14.5"}, "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": 2024010000406}, "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 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 17 2024"}, "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": 59733.36764310686}, "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": ["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": -14.5}, "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": 17.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 18.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.25, -14.5], [14.47, -13.97], [15.0, -13.75], [15.25, -13.85], [15.5, -13.75], [15.75, -13.85], [15.82, -13.82], [15.97, -13.47], [16.5, -13.25], [16.75, -13.35], [17.0, -13.25], [17.53, -13.47], [17.68, -13.82], [18.03, -13.97], [18.18, -14.32], [18.53, -14.47], [18.75, -15.0], [18.65, -15.25], [18.75, -15.5], [18.53, -16.03], [18.0, -16.25], [17.75, -16.15], [17.68, -16.18], [17.53, -16.53], [17.0, -16.75], [16.47, -16.53], [16.32, -16.18], [16.25, -16.15], [16.0, -16.25], [15.47, -16.03], [15.32, -15.68], [14.97, -15.53], [14.82, -15.18], [14.47, -15.03], [14.25, -14.5]]]]}, "2024-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.25, -14.5], [14.47, -13.97], [15.0, -13.75], [15.25, -13.85], [15.5, -13.75], [15.75, -13.85], [15.82, -13.82], [15.97, -13.47], [16.5, -13.25], [16.75, -13.35], [17.0, -13.25], [17.53, -13.47], [17.68, -13.82], [18.03, -13.97], [18.18, -14.32], [18.53, -14.47], [18.75, -15.0], [18.65, -15.25], [18.75, -15.5], [18.53, -16.03], [18.0, -16.25], [17.75, -16.15], [17.68, -16.18], [17.53, -16.53], [17.0, -16.75], [16.47, -16.53], [16.32, -16.18], [16.25, -16.15], [16.0, -16.25], [15.47, -16.03], [15.32, -15.68], [14.97, -15.53], [14.82, -15.18], [14.47, -15.03], [14.25, -14.5]]]]}, "2024-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.25, -14.5], [14.47, -13.97], [15.0, -13.75], [15.25, -13.85], [15.5, -13.75], [15.75, -13.85], [15.82, -13.82], [15.97, -13.47], [16.5, -13.25], [16.75, -13.35], [17.0, -13.25], [17.53, -13.47], [17.68, -13.82], [18.03, -13.97], [18.18, -14.32], [18.53, -14.47], [18.75, -15.0], [18.65, -15.25], [18.75, -15.5], [18.53, -16.03], [18.0, -16.25], [17.75, -16.15], [17.68, -16.18], [17.53, -16.53], [17.0, -16.75], [16.47, -16.53], [16.32, -16.18], [16.25, -16.15], [16.0, -16.25], [15.47, -16.03], [15.32, -15.68], [14.97, -15.53], [14.82, -15.18], [14.47, -15.03], [14.25, -14.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.040105350690908}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0102383143389972}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.33462140414514, 17.94328817126825, 18.972065201470457]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.261908040152775, 16.775675800598208, 17.89378044339486]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.1179287908836075, -3.488881555785383, -2.423904596348001]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.9634348620958804, -4.040105350690908, -3.5055137944955277]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.061403486598098, -2.2187066104185984, -1.5240368684412424]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.991330560103901, -2.5614433524308042, -1.7829183345262187]}}