{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:22.042802", "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": "2010-Dec-26_to_2010-Dec-29_16.0_-12.0"}, "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": 2010120001181}, "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 26 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 29 2010"}, "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": 54216.56847064198}, "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"]}, "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": -12.0}, "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": 16.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 15.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.25}, "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": {"2010-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, -11.47], [16.0, -11.25], [16.25, -11.35], [16.5, -11.25], [17.03, -11.47], [17.18, -11.82], [17.25, -11.85], [17.5, -11.75], [17.75, -11.85], [18.0, -11.75], [18.53, -11.97], [18.68, -12.32], [19.03, -12.47], [19.18, -12.82], [19.53, -12.97], [19.75, -13.5], [19.53, -14.03], [19.18, -14.18], [19.03, -14.53], [18.5, -14.75], [18.25, -14.65], [18.0, -14.75], [17.47, -14.53], [17.32, -14.18], [16.97, -14.03], [16.82, -13.68], [16.75, -13.65], [16.5, -13.75], [15.97, -13.53], [15.82, -13.18], [15.47, -13.03], [15.25, -12.5], [15.35, -12.25], [15.25, -12.0], [15.47, -11.47]]]]}, "2010-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.0, -11.25], [16.25, -11.35], [16.5, -11.25], [17.03, -11.47], [17.18, -11.82], [17.25, -11.85], [17.5, -11.75], [17.75, -11.85], [18.0, -11.75], [18.53, -11.97], [18.68, -12.32], [19.03, -12.47], [19.18, -12.82], [19.53, -12.97], [19.75, -13.5], [19.53, -14.03], [19.18, -14.18], [19.03, -14.53], [18.5, -14.75], [18.25, -14.65], [18.0, -14.75], [17.47, -14.53], [17.32, -14.18], [16.97, -14.03], [16.82, -13.68], [16.75, -13.65], [16.5, -13.75], [15.97, -13.53], [15.82, -13.18], [15.75, -13.15], [15.5, -13.25], [14.97, -13.03], [14.75, -12.5], [14.97, -11.97], [15.32, -11.82], [15.47, -11.47], [16.0, -11.25]]]]}, "2010-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.0, -11.25], [16.25, -11.35], [16.5, -11.25], [17.03, -11.47], [17.18, -11.82], [17.25, -11.85], [17.5, -11.75], [17.75, -11.85], [18.0, -11.75], [18.53, -11.97], [18.68, -12.32], [19.03, -12.47], [19.18, -12.82], [19.53, -12.97], [19.75, -13.5], [19.53, -14.03], [19.18, -14.18], [19.03, -14.53], [18.5, -14.75], [18.25, -14.65], [18.0, -14.75], [17.47, -14.53], [17.32, -14.18], [16.97, -14.03], [16.82, -13.68], [16.75, -13.65], [16.5, -13.75], [15.97, -13.53], [15.82, -13.18], [15.75, -13.15], [15.5, -13.25], [14.97, -13.03], [14.75, -12.5], [14.97, -11.97], [15.32, -11.82], [15.47, -11.47], [16.0, -11.25]]]]}, "2010-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.5, -11.75], [16.03, -11.97], [16.25, -12.5], [16.03, -13.03], [15.5, -13.25], [14.97, -13.03], [14.75, -12.5], [14.97, -11.97], [15.5, -11.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.6494457680834103}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7673646263384657}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.332556630273814, 18.108240422814674, 17.663285520742136, 17.030460190497536]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.510714517175188, 16.851607781765665, 15.999136195743688, 17.030460190497536]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.543017608711312, -1.6750760917120777, -2.0961699823899473, -1.3239611403483877]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7650870487458405, -2.0241447361223663, -2.6494457680834103, -1.3239611403483877]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5281450089492672, -1.7072707522682828, -2.0699706625580903, -1.5352516443819613]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.901759896963111, -2.533092020250145, -2.864603275147477, -1.5352516443819613]}}