{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:37.282217", "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": "2010-Sep-12_to_2010-Sep-15_32.5_-8.0"}, "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": 2010090000601}, "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": "September 12 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 15 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 57951.348168493976}, "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": ["Tanzania", "Zambia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "S.Eastern-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": -8.0}, "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": 32.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 32.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, -9.47], [30.32, -9.32], [30.47, -8.97], [30.82, -8.82], [30.85, -8.75], [30.75, -8.5], [30.97, -7.97], [31.32, -7.82], [31.47, -7.47], [32.0, -7.25], [32.25, -7.35], [32.5, -7.25], [33.03, -7.47], [33.25, -8.0], [33.03, -8.53], [32.63, -8.7], [32.75, -9.0], [32.65, -9.25], [32.75, -9.5], [32.65, -9.75], [32.75, -10.0], [32.65, -10.25], [32.75, -10.5], [32.53, -11.03], [32.0, -11.25], [31.75, -11.15], [31.5, -11.25], [31.25, -11.15], [31.0, -11.25], [30.75, -11.15], [30.5, -11.25], [29.97, -11.03], [29.75, -10.5], [29.85, -10.25], [29.75, -10.0], [29.97, -9.47]]]]}, "2010-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, -9.47], [30.32, -9.32], [30.47, -8.97], [30.82, -8.82], [30.85, -8.75], [30.75, -8.5], [30.96, -8.0], [30.75, -7.5], [30.97, -6.97], [31.5, -6.75], [31.75, -6.85], [32.0, -6.75], [32.53, -6.97], [32.68, -7.32], [33.03, -7.47], [33.25, -8.0], [33.03, -8.53], [32.68, -8.68], [32.65, -8.75], [32.75, -9.0], [32.65, -9.25], [32.75, -9.5], [32.65, -9.75], [32.75, -10.0], [32.65, -10.25], [32.75, -10.5], [32.53, -11.03], [32.0, -11.25], [31.75, -11.15], [31.5, -11.25], [31.25, -11.15], [31.0, -11.25], [30.75, -11.15], [30.5, -11.25], [29.97, -11.03], [29.75, -10.5], [29.85, -10.25], [29.75, -10.0], [29.97, -9.47]]]]}, "2010-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, -9.47], [30.32, -9.32], [30.47, -8.97], [30.82, -8.82], [30.85, -8.75], [30.75, -8.5], [30.96, -8.0], [30.75, -7.5], [30.97, -6.97], [31.5, -6.75], [31.75, -6.85], [32.0, -6.75], [32.53, -6.97], [32.68, -7.32], [33.03, -7.47], [33.25, -8.0], [33.03, -8.53], [32.68, -8.68], [32.65, -8.75], [32.75, -9.0], [32.65, -9.25], [32.75, -9.5], [32.65, -9.75], [32.75, -10.0], [32.65, -10.25], [32.75, -10.5], [32.53, -11.03], [32.0, -11.25], [31.75, -11.15], [31.5, -11.25], [31.25, -11.15], [31.0, -11.25], [30.75, -11.15], [30.5, -11.25], [29.97, -11.03], [29.75, -10.5], [29.85, -10.25], [29.75, -10.0], [29.97, -9.47]]]]}, "2010-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, -7.5], [30.97, -6.97], [31.5, -6.75], [31.75, -6.85], [32.0, -6.75], [32.53, -6.97], [32.68, -7.32], [33.03, -7.47], [33.25, -8.0], [33.03, -8.53], [32.68, -8.68], [32.53, -9.03], [32.0, -9.25], [31.47, -9.03], [31.25, -8.5], [31.38, -8.2], [30.97, -8.03], [30.75, -7.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.390371837226496}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6335141204631562}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.78197800626964, 20.695961425568555, 21.085382190356086, 22.20040668315363]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.53022051320761, 18.411007622300417, 18.823213358033, 20.32589421012875]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6754515221814046, -1.8285953042187089, -1.5077860074944438, -1.1363374273526716]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.112379422931326, -2.390371837226496, -1.9578370694959517, -1.2800197989426465]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5369406138279378, -1.702404844573763, -1.378934283130155, -1.414540282309091]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.754934806480155, -2.357954863508895, -2.028190209896549, -1.605945012918772]}}