{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:45.641554", "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": "2016-Dec-06_to_2016-Dec-08_33.5_-10.0"}, "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": 2016120000239}, "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": "December 06 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 08 2016"}, "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": 127482.54782553167}, "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": ["Malawi", "Mozambique", "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": -10.0}, "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": 33.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.5\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": 35.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -11.0], [30.35, -10.75], [30.25, -10.5], [30.35, -10.25], [30.25, -10.0], [30.47, -9.47], [30.82, -9.32], [30.85, -9.25], [30.75, -9.0], [30.97, -8.47], [31.5, -8.25], [31.75, -8.35], [32.0, -8.25], [32.53, -8.47], [32.68, -8.82], [32.75, -8.85], [33.0, -8.75], [33.25, -8.85], [33.5, -8.75], [33.75, -8.85], [34.0, -8.75], [34.53, -8.97], [34.75, -9.5], [34.65, -9.75], [34.75, -10.0], [34.65, -10.25], [34.7, -10.37], [35.0, -10.25], [35.53, -10.47], [35.75, -11.0], [35.53, -11.53], [35.18, -11.68], [35.15, -11.75], [35.25, -12.0], [35.15, -12.25], [35.18, -12.32], [35.25, -12.35], [35.5, -12.25], [36.03, -12.47], [36.25, -13.0], [36.15, -13.25], [36.25, -13.5], [36.03, -14.03], [35.5, -14.25], [34.97, -14.03], [34.82, -13.68], [34.47, -13.53], [34.32, -13.18], [33.97, -13.03], [33.82, -12.68], [33.47, -12.53], [33.3, -12.12], [33.0, -12.25], [32.5, -12.04], [32.18, -12.18], [32.03, -12.53], [31.5, -12.75], [31.25, -12.65], [31.0, -12.75], [30.75, -12.65], [30.5, -12.75], [29.97, -12.53], [29.75, -12.0], [29.97, -11.47], [30.32, -11.32], [30.35, -11.25], [30.25, -11.0]]]]}, "2016-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -11.0], [30.35, -10.75], [30.25, -10.5], [30.35, -10.25], [30.25, -10.0], [30.47, -9.47], [30.82, -9.32], [30.85, -9.25], [30.75, -9.0], [30.97, -8.47], [31.5, -8.25], [31.75, -8.35], [32.0, -8.25], [32.53, -8.47], [32.68, -8.82], [32.75, -8.85], [33.0, -8.75], [33.25, -8.85], [33.5, -8.75], [33.75, -8.85], [34.0, -8.75], [34.53, -8.97], [34.75, -9.5], [34.65, -9.75], [34.75, -10.0], [34.65, -10.25], [34.7, -10.37], [35.0, -10.25], [35.53, -10.47], [35.75, -11.0], [35.53, -11.53], [35.18, -11.68], [35.15, -11.75], [35.25, -12.0], [35.15, -12.25], [35.18, -12.32], [35.25, -12.35], [35.5, -12.25], [36.03, -12.47], [36.25, -13.0], [36.15, -13.25], [36.25, -13.5], [36.03, -14.03], [35.5, -14.25], [34.97, -14.03], [34.82, -13.68], [34.47, -13.53], [34.32, -13.18], [33.97, -13.03], [33.82, -12.68], [33.47, -12.53], [33.3, -12.12], [33.0, -12.25], [32.5, -12.04], [32.18, -12.18], [32.03, -12.53], [31.5, -12.75], [31.25, -12.65], [31.0, -12.75], [30.75, -12.65], [30.5, -12.75], [29.97, -12.53], [29.75, -12.0], [29.97, -11.47], [30.32, -11.32], [30.35, -11.25], [30.25, -11.0]]]]}, "2016-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -11.0], [30.35, -10.75], [30.25, -10.5], [30.35, -10.25], [30.25, -10.0], [30.47, -9.47], [30.82, -9.32], [30.85, -9.25], [30.75, -9.0], [30.97, -8.47], [31.5, -8.25], [31.75, -8.35], [32.0, -8.25], [32.53, -8.47], [32.68, -8.82], [32.75, -8.85], [33.0, -8.75], [33.25, -8.85], [33.5, -8.75], [33.75, -8.85], [34.0, -8.75], [34.53, -8.97], [34.75, -9.5], [34.65, -9.75], [34.75, -10.0], [34.65, -10.25], [34.7, -10.37], [35.0, -10.25], [35.53, -10.47], [35.75, -11.0], [35.53, -11.53], [35.18, -11.68], [35.15, -11.75], [35.25, -12.0], [35.15, -12.25], [35.18, -12.32], [35.25, -12.35], [35.5, -12.25], [36.03, -12.47], [36.25, -13.0], [36.15, -13.25], [36.25, -13.5], [36.03, -14.03], [35.5, -14.25], [34.97, -14.03], [34.82, -13.68], [34.47, -13.53], [34.32, -13.18], [33.97, -13.03], [33.82, -12.68], [33.47, -12.53], [33.3, -12.12], [33.0, -12.25], [32.5, -12.04], [32.18, -12.18], [32.03, -12.53], [31.5, -12.75], [31.25, -12.65], [31.0, -12.75], [30.75, -12.65], [30.5, -12.75], [29.97, -12.53], [29.75, -12.0], [29.97, -11.47], [30.32, -11.32], [30.35, -11.25], [30.25, -11.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.011913748611448}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.280859041062025}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.710017463560234, 20.396453467676622, 20.283191906892398]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.766573789259382, 18.030506458858497, 17.708505907382175]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.144251089161907, -2.3462956752442845, -2.3520303587798828]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.747273416899759, -4.011913748611448, -3.9566624716679826]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5455691917794514, -1.6996888155497967, -1.7158901411596907]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.223541446322651, -2.145542915056807, -2.21229920784833]}}