{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:59.602711", "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-Apr-04_to_2013-Apr-06_30.0_-22.0"}, "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": 2013040000213}, "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": "April 04 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 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": 79923.9069891889}, "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": ["Botswana", "South Africa", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": -22.0}, "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": 30.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "30.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.75, -22.5], [24.97, -21.97], [25.32, -21.82], [25.47, -21.47], [26.0, -21.25], [26.25, -21.35], [26.5, -21.25], [26.8, -21.37], [26.97, -20.97], [27.32, -20.82], [27.47, -20.47], [28.0, -20.25], [28.53, -20.47], [28.68, -20.82], [29.03, -20.97], [29.2, -21.37], [29.5, -21.25], [29.75, -21.35], [30.0, -21.25], [30.25, -21.35], [30.5, -21.25], [31.03, -21.47], [31.25, -22.0], [31.03, -22.53], [30.5, -22.75], [30.25, -22.65], [30.18, -22.68], [30.03, -23.03], [29.68, -23.18], [29.53, -23.53], [29.18, -23.68], [29.03, -24.03], [28.5, -24.25], [28.25, -24.15], [28.0, -24.25], [27.75, -24.15], [27.68, -24.18], [27.53, -24.53], [27.0, -24.75], [26.47, -24.53], [26.32, -24.18], [26.25, -24.15], [26.0, -24.25], [25.47, -24.03], [25.25, -23.5], [25.35, -23.25], [25.32, -23.18], [24.97, -23.03], [24.75, -22.5]], [[26.82, -22.82], [26.93, -22.57], [26.68, -22.68], [26.65, -22.75], [26.68, -22.82], [26.75, -22.85], [26.82, -22.82]]]]}, "2013-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.75, -22.5], [24.97, -21.97], [25.32, -21.82], [25.47, -21.47], [26.0, -21.25], [26.25, -21.35], [26.5, -21.25], [26.8, -21.37], [26.97, -20.97], [27.32, -20.82], [27.47, -20.47], [28.0, -20.25], [28.53, -20.47], [28.68, -20.82], [29.03, -20.97], [29.2, -21.37], [29.5, -21.25], [29.75, -21.35], [30.0, -21.25], [30.25, -21.35], [30.5, -21.25], [31.03, -21.47], [31.25, -22.0], [31.03, -22.53], [30.5, -22.75], [30.25, -22.65], [30.18, -22.68], [30.03, -23.03], [29.68, -23.18], [29.53, -23.53], [29.18, -23.68], [29.03, -24.03], [28.5, -24.25], [28.25, -24.15], [28.0, -24.25], [27.75, -24.15], [27.68, -24.18], [27.53, -24.53], [27.0, -24.75], [26.47, -24.53], [26.32, -24.18], [26.25, -24.15], [26.0, -24.25], [25.47, -24.03], [25.25, -23.5], [25.35, -23.25], [25.32, -23.18], [24.97, -23.03], [24.75, -22.5]], [[26.82, -22.82], [26.93, -22.57], [26.68, -22.68], [26.65, -22.75], [26.68, -22.82], [26.75, -22.85], [26.82, -22.82]]]]}, "2013-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.75, -22.5], [24.97, -21.97], [25.32, -21.82], [25.47, -21.47], [26.0, -21.25], [26.25, -21.35], [26.5, -21.25], [26.8, -21.37], [26.97, -20.97], [27.32, -20.82], [27.47, -20.47], [28.0, -20.25], [28.53, -20.47], [28.68, -20.82], [29.03, -20.97], [29.2, -21.37], [29.5, -21.25], [29.75, -21.35], [30.0, -21.25], [30.25, -21.35], [30.5, -21.25], [31.03, -21.47], [31.25, -22.0], [31.03, -22.53], [30.5, -22.75], [30.25, -22.65], [30.18, -22.68], [30.03, -23.03], [29.68, -23.18], [29.53, -23.53], [29.18, -23.68], [29.03, -24.03], [28.5, -24.25], [28.25, -24.15], [28.0, -24.25], [27.75, -24.15], [27.68, -24.18], [27.53, -24.53], [27.0, -24.75], [26.47, -24.53], [26.32, -24.18], [26.25, -24.15], [26.0, -24.25], [25.47, -24.03], [25.25, -23.5], [25.35, -23.25], [25.32, -23.18], [24.97, -23.03], [24.75, -22.5]], [[26.82, -22.82], [26.93, -22.57], [26.68, -22.68], [26.65, -22.75], [26.68, -22.82], [26.75, -22.85], [26.82, -22.82]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.153002850888697}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.310681455641329}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.17918334076029, 17.606386095941673, 18.866010173554002]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.64863499006691, 16.115117522672847, 17.36599451495556]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.590497001516547, -4.910865214087794, -3.430682151319646]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.153002850888697, -5.704816278100907, -3.9910786083034964]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.002966389339433, -2.0841616489758445, -1.4498417259361218]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.008580208607807, -2.3601497741128896, -1.725840496308899]}}