{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:38.828179", "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": "2012-Feb-25_to_2012-Feb-27_27.5_-9.5"}, "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": 2012020001393}, "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": "February 25 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 27 2012"}, "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": 63866.71696024222}, "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": ["Congo DRC", "Zambia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "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": -9.5}, "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": 27.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "27.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 29.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, -8.97], [26.32, -8.82], [26.47, -8.47], [26.82, -8.32], [26.97, -7.97], [27.5, -7.75], [28.03, -7.97], [28.25, -8.5], [28.15, -8.75], [28.25, -9.0], [28.15, -9.25], [28.25, -9.5], [28.15, -9.75], [28.25, -10.0], [28.47, -9.47], [29.0, -9.25], [29.25, -9.35], [29.5, -9.25], [30.03, -9.47], [30.25, -10.0], [30.15, -10.25], [30.25, -10.5], [30.03, -11.03], [29.68, -11.18], [29.53, -11.53], [29.18, -11.68], [29.03, -12.03], [28.5, -12.25], [28.0, -12.04], [27.5, -12.25], [27.25, -12.15], [27.0, -12.25], [26.75, -12.15], [26.5, -12.25], [25.97, -12.03], [25.75, -11.5], [25.97, -10.97], [26.38, -10.8], [26.32, -10.68], [25.97, -10.53], [25.75, -10.0], [25.85, -9.75], [25.75, -9.5], [25.97, -8.97]], [[28.15, -10.25], [28.18, -10.32], [28.25, -10.35], [28.38, -10.3], [28.25, -10.0], [28.15, -10.25]]]]}, "2012-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, -8.97], [26.32, -8.82], [26.47, -8.47], [26.82, -8.32], [26.97, -7.97], [27.5, -7.75], [28.03, -7.97], [28.25, -8.5], [28.15, -8.75], [28.25, -9.0], [28.15, -9.25], [28.25, -9.5], [28.15, -9.75], [28.25, -10.0], [28.47, -9.47], [29.0, -9.25], [29.25, -9.35], [29.5, -9.25], [30.03, -9.47], [30.25, -10.0], [30.15, -10.25], [30.25, -10.5], [30.03, -11.03], [29.68, -11.18], [29.53, -11.53], [29.18, -11.68], [29.03, -12.03], [28.5, -12.25], [28.0, -12.04], [27.5, -12.25], [27.25, -12.15], [27.0, -12.25], [26.75, -12.15], [26.5, -12.25], [25.97, -12.03], [25.75, -11.5], [25.97, -10.97], [26.38, -10.8], [26.32, -10.68], [25.97, -10.53], [25.75, -10.0], [25.85, -9.75], [25.75, -9.5], [25.97, -8.97]], [[28.15, -10.25], [28.18, -10.32], [28.25, -10.35], [28.38, -10.3], [28.25, -10.0], [28.15, -10.25]]]]}, "2012-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, -8.97], [26.32, -8.82], [26.47, -8.47], [26.82, -8.32], [26.97, -7.97], [27.5, -7.75], [28.03, -7.97], [28.25, -8.5], [28.15, -8.75], [28.25, -9.0], [28.15, -9.25], [28.25, -9.5], [28.15, -9.75], [28.25, -10.0], [28.47, -9.47], [29.0, -9.25], [29.25, -9.35], [29.5, -9.25], [30.03, -9.47], [30.25, -10.0], [30.15, -10.25], [30.25, -10.5], [30.03, -11.03], [29.68, -11.18], [29.53, -11.53], [29.18, -11.68], [29.03, -12.03], [28.5, -12.25], [28.0, -12.04], [27.5, -12.25], [27.25, -12.15], [27.0, -12.25], [26.75, -12.15], [26.5, -12.25], [25.97, -12.03], [25.75, -11.5], [25.97, -10.97], [26.38, -10.8], [26.32, -10.68], [25.97, -10.53], [25.75, -10.0], [25.85, -9.75], [25.75, -9.5], [25.97, -8.97]], [[28.15, -10.25], [28.18, -10.32], [28.25, -10.35], [28.38, -10.3], [28.25, -10.0], [28.15, -10.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9081426121693426}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7023850303610704}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.599173531719828, 19.550774101764716, 19.501085985251393]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.297242662084102, 17.853972111966186, 18.285719734830593]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.682542803142572, -1.6884309213364488, -1.73618136660419]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.144347137115062, -2.9081426121693426, -2.2359979586734084]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7872540746885535, -1.7864793908667482, -1.8513762440169828]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.276300719452013, -2.813537672816887, -2.555743375569286]}}