{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:14.019249", "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-Jan-04_to_2013-Jan-06_20.0_-13.0"}, "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": 2013010000215}, "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": "January 04 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 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": 83737.35348651037}, "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": -13.0}, "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": 20.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.25, -12.0], [18.47, -11.47], [19.0, -11.25], [19.25, -11.35], [19.5, -11.25], [20.03, -11.47], [20.18, -11.82], [20.53, -11.97], [20.75, -12.5], [20.65, -12.75], [20.68, -12.82], [21.03, -12.97], [21.18, -13.32], [21.53, -13.47], [21.68, -13.82], [22.03, -13.97], [22.18, -14.32], [22.53, -14.47], [22.68, -14.82], [23.03, -14.97], [23.18, -15.32], [23.53, -15.47], [23.75, -16.0], [23.53, -16.53], [23.0, -16.75], [22.75, -16.65], [22.68, -16.68], [22.53, -17.03], [22.0, -17.25], [21.75, -17.15], [21.5, -17.25], [20.97, -17.03], [20.82, -16.68], [20.47, -16.53], [20.32, -16.18], [19.97, -16.03], [19.75, -15.5], [19.85, -15.25], [19.82, -15.18], [19.47, -15.03], [19.25, -14.5], [19.35, -14.25], [19.25, -14.0], [19.35, -13.75], [19.25, -13.5], [19.35, -13.25], [19.32, -13.18], [18.97, -13.03], [18.82, -12.68], [18.47, -12.53], [18.25, -12.0]]]]}, "2013-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.25, -12.0], [18.47, -11.47], [19.0, -11.25], [19.25, -11.35], [19.5, -11.25], [20.03, -11.47], [20.18, -11.82], [20.53, -11.97], [20.75, -12.5], [20.65, -12.75], [20.68, -12.82], [21.03, -12.97], [21.18, -13.32], [21.53, -13.47], [21.68, -13.82], [22.03, -13.97], [22.18, -14.32], [22.53, -14.47], [22.68, -14.82], [23.03, -14.97], [23.18, -15.32], [23.53, -15.47], [23.75, -16.0], [23.53, -16.53], [23.0, -16.75], [22.75, -16.65], [22.68, -16.68], [22.53, -17.03], [22.0, -17.25], [21.75, -17.15], [21.5, -17.25], [20.97, -17.03], [20.82, -16.68], [20.47, -16.53], [20.32, -16.18], [19.97, -16.03], [19.75, -15.5], [19.85, -15.25], [19.82, -15.18], [19.47, -15.03], [19.25, -14.5], [19.35, -14.25], [19.25, -14.0], [19.35, -13.75], [19.25, -13.5], [19.35, -13.25], [19.32, -13.18], [18.97, -13.03], [18.82, -12.68], [18.47, -12.53], [18.25, -12.0]]]]}, "2013-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.25, -12.0], [18.47, -11.47], [19.0, -11.25], [19.25, -11.35], [19.5, -11.25], [20.03, -11.47], [20.18, -11.82], [20.53, -11.97], [20.75, -12.5], [20.65, -12.75], [20.68, -12.82], [21.03, -12.97], [21.18, -13.32], [21.53, -13.47], [21.68, -13.82], [22.03, -13.97], [22.18, -14.32], [22.53, -14.47], [22.68, -14.82], [23.03, -14.97], [23.18, -15.32], [23.53, -15.47], [23.75, -16.0], [23.53, -16.53], [23.0, -16.75], [22.75, -16.65], [22.68, -16.68], [22.53, -17.03], [22.0, -17.25], [21.75, -17.15], [21.5, -17.25], [20.97, -17.03], [20.82, -16.68], [20.47, -16.53], [20.32, -16.18], [19.97, -16.03], [19.75, -15.5], [19.85, -15.25], [19.82, -15.18], [19.47, -15.03], [19.25, -14.5], [19.35, -14.25], [19.25, -14.0], [19.35, -13.75], [19.25, -13.5], [19.35, -13.25], [19.32, -13.18], [18.97, -13.03], [18.82, -12.68], [18.47, -12.53], [18.25, -12.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0191000989592567}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3189547907193293}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.09867719833676, 19.92375265993428, 20.057535161576254]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.370238262757482, 17.791556225644115, 18.260512663363613]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.258340842280067, -2.428048592121042, -2.2704749377568794]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0191000989592567, -2.96123062156488, -2.838939920917653]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.696157182670472, -1.8365057858479383, -1.6792016734236654]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9982108351252703, -2.815425568967676, -2.2869773720376845]}}