{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:09.414774", "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-Jun-15_to_2015-Jun-17_23.5_-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": 2015060000563}, "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": "June 15 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 17 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": 62946.4631321654}, "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", "Zambia"]}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.75}, "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": -12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, -13.47], [21.82, -13.32], [21.85, -13.25], [21.75, -13.0], [21.97, -12.47], [22.5, -12.25], [23.03, -12.47], [23.18, -12.82], [23.25, -12.85], [23.32, -12.82], [23.47, -12.47], [24.0, -12.25], [24.53, -12.47], [24.68, -12.82], [25.03, -12.97], [25.25, -13.5], [25.15, -13.75], [25.25, -14.0], [25.03, -14.53], [24.68, -14.68], [24.53, -15.03], [24.0, -15.25], [23.75, -15.15], [23.68, -15.18], [23.65, -15.25], [23.68, -15.32], [24.03, -15.47], [24.25, -16.0], [24.03, -16.53], [23.5, -16.75], [22.97, -16.53], [22.82, -16.18], [22.47, -16.03], [22.25, -15.5], [22.35, -15.25], [22.32, -15.18], [22.25, -15.15], [22.0, -15.25], [21.47, -15.03], [21.25, -14.5], [21.35, -14.25], [21.25, -14.0], [21.47, -13.47]]]]}, "2015-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, -13.47], [21.82, -13.32], [21.85, -13.25], [21.75, -13.0], [21.97, -12.47], [22.5, -12.25], [23.03, -12.47], [23.18, -12.82], [23.25, -12.85], [23.32, -12.82], [23.47, -12.47], [24.0, -12.25], [24.53, -12.47], [24.68, -12.82], [25.03, -12.97], [25.25, -13.5], [25.15, -13.75], [25.25, -14.0], [25.03, -14.53], [24.68, -14.68], [24.53, -15.03], [24.0, -15.25], [23.75, -15.15], [23.68, -15.18], [23.65, -15.25], [23.68, -15.32], [24.03, -15.47], [24.25, -16.0], [24.03, -16.53], [23.5, -16.75], [22.97, -16.53], [22.82, -16.18], [22.47, -16.03], [22.25, -15.5], [22.35, -15.25], [22.32, -15.18], [22.25, -15.15], [22.0, -15.25], [21.47, -15.03], [21.25, -14.5], [21.35, -14.25], [21.25, -14.0], [21.47, -13.47]]]]}, "2015-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, -13.47], [21.82, -13.32], [21.85, -13.25], [21.75, -13.0], [21.97, -12.47], [22.5, -12.25], [23.03, -12.47], [23.18, -12.82], [23.25, -12.85], [23.32, -12.82], [23.47, -12.47], [24.0, -12.25], [24.53, -12.47], [24.68, -12.82], [25.03, -12.97], [25.25, -13.5], [25.15, -13.75], [25.25, -14.0], [25.03, -14.53], [24.68, -14.68], [24.53, -15.03], [24.0, -15.25], [23.75, -15.15], [23.68, -15.18], [23.65, -15.25], [23.68, -15.32], [24.03, -15.47], [24.25, -16.0], [24.03, -16.53], [23.5, -16.75], [22.97, -16.53], [22.82, -16.18], [22.47, -16.03], [22.25, -15.5], [22.35, -15.25], [22.32, -15.18], [22.25, -15.15], [22.0, -15.25], [21.47, -15.03], [21.25, -14.5], [21.35, -14.25], [21.25, -14.0], [21.47, -13.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.950331007110833}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1168651405341654}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.012169618584608, 16.52398461398036, 16.682591209754094]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.181342430918676, 15.604360967292735, 16.091251363639742]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8758689663774735, -2.3307119342422067, -2.1440145209828154]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.061223563102601, -2.950331007110833, -2.6012621574024024]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2277484668095677, -1.5514616584671137, -1.4746876367326744]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3217612305683482, -1.934668796214988, -1.7618437746357725]}}