{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:14.337529", "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-May-01_to_2013-May-04_25.0_-18.0"}, "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": 2013050000046}, "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": "May 01 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 04 2013"}, "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": 53187.49856843639}, "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", "Namibia", "Zambia", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-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": -18.0}, "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": 25.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, -16.97], [25.0, -16.75], [25.53, -16.97], [25.68, -17.32], [26.03, -17.47], [26.25, -18.0], [26.03, -18.53], [25.5, -18.75], [25.25, -18.65], [25.0, -18.75], [24.47, -18.53], [24.25, -18.0], [24.35, -17.75], [24.25, -17.5], [24.47, -16.97]]]]}, "2013-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.85, -17.25], [23.75, -17.0], [23.97, -16.47], [24.32, -16.32], [24.47, -15.97], [24.82, -15.82], [24.97, -15.47], [25.32, -15.32], [25.47, -14.97], [26.0, -14.75], [26.53, -14.97], [26.75, -15.5], [26.65, -15.75], [26.68, -15.82], [27.03, -15.97], [27.25, -16.5], [27.15, -16.75], [27.18, -16.82], [27.53, -16.97], [27.75, -17.5], [27.65, -17.75], [27.75, -18.0], [27.53, -18.53], [27.0, -18.75], [26.5, -18.54], [26.0, -18.75], [25.75, -18.65], [25.5, -18.75], [25.25, -18.65], [25.0, -18.75], [24.75, -18.65], [24.5, -18.75], [23.97, -18.53], [23.75, -18.0], [23.85, -17.75], [23.75, -17.5], [23.85, -17.25]], [[25.75, -17.15], [25.68, -17.18], [25.65, -17.25], [25.68, -17.32], [25.75, -17.35], [25.88, -17.3], [25.82, -17.18], [25.75, -17.15]]]]}, "2013-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.85, -17.25], [23.75, -17.0], [23.97, -16.47], [24.32, -16.32], [24.47, -15.97], [24.82, -15.82], [24.97, -15.47], [25.32, -15.32], [25.47, -14.97], [26.0, -14.75], [26.53, -14.97], [26.75, -15.5], [26.65, -15.75], [26.68, -15.82], [27.03, -15.97], [27.25, -16.5], [27.15, -16.75], [27.18, -16.82], [27.53, -16.97], [27.75, -17.5], [27.65, -17.75], [27.75, -18.0], [27.53, -18.53], [27.0, -18.75], [26.5, -18.54], [26.0, -18.75], [25.75, -18.65], [25.5, -18.75], [25.25, -18.65], [25.0, -18.75], [24.75, -18.65], [24.5, -18.75], [23.97, -18.53], [23.75, -18.0], [23.85, -17.75], [23.75, -17.5], [23.85, -17.25]], [[25.75, -17.15], [25.68, -17.18], [25.65, -17.25], [25.68, -17.32], [25.75, -17.35], [25.88, -17.3], [25.82, -17.18], [25.75, -17.15]]]]}, "2013-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.85, -17.25], [23.75, -17.0], [23.97, -16.47], [24.32, -16.32], [24.47, -15.97], [24.82, -15.82], [24.97, -15.47], [25.32, -15.32], [25.47, -14.97], [26.0, -14.75], [26.53, -14.97], [26.75, -15.5], [26.65, -15.75], [26.68, -15.82], [27.03, -15.97], [27.25, -16.5], [27.15, -16.75], [27.18, -16.82], [27.53, -16.97], [27.75, -17.5], [27.65, -17.75], [27.75, -18.0], [27.53, -18.53], [27.0, -18.75], [26.5, -18.54], [26.0, -18.75], [25.75, -18.65], [25.5, -18.75], [25.25, -18.65], [25.0, -18.75], [24.75, -18.65], [24.5, -18.75], [23.97, -18.53], [23.75, -18.0], [23.85, -17.75], [23.75, -17.5], [23.85, -17.25]], [[25.75, -17.15], [25.68, -17.18], [25.65, -17.25], [25.68, -17.32], [25.75, -17.35], [25.88, -17.3], [25.82, -17.18], [25.75, -17.15]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.6578969156314542}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.019452788743075}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.205214425507677, 19.143072367893694, 19.28292299646023, 19.06955328686712]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.610610183779784, 16.576589687268495, 16.791713313677917, 16.650518603128887]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.70869616706464, -2.0850926291966263, -1.9265875529279601, -2.098470954384377]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7263389425807532, -2.573593360145594, -2.4573728272517315, -2.6578969156314542]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2339937879732192, -1.593137046031291, -1.514209683406475, -1.6173378909584757]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2869358531826864, -1.8833990196567219, -1.897789361632048, -2.017041444309184]}}