{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:03.976913", "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": "2011-Dec-05_to_2011-Dec-08_282.0_5.0"}, "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": 2011120000364}, "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 05 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 08 2011"}, "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": 52362.825010418106}, "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": ["Colombia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": ["North Pacific Ocean"]}, "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": 5.0}, "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": 282.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "282.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 279.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 283.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.0, 5.75], [-77.47, 5.53], [-77.25, 5.0], [-77.47, 4.47], [-78.0, 4.25], [-78.53, 4.47], [-78.75, 5.0], [-78.53, 5.53], [-78.0, 5.75]]]]}, "2011-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.18, 5.68], [-80.03, 6.03], [-79.5, 6.25], [-79.25, 6.15], [-79.0, 6.25], [-78.47, 6.03], [-78.32, 5.68], [-78.25, 5.65], [-78.0, 5.75], [-77.75, 5.65], [-77.68, 5.68], [-77.53, 6.03], [-77.0, 6.25], [-76.47, 6.03], [-76.25, 5.5], [-76.47, 4.97], [-76.82, 4.82], [-76.85, 4.75], [-76.75, 4.5], [-76.97, 3.97], [-77.5, 3.75], [-78.0, 3.96], [-78.32, 3.82], [-78.47, 3.47], [-79.0, 3.25], [-79.25, 3.35], [-79.5, 3.25], [-80.03, 3.47], [-80.18, 3.82], [-80.25, 3.85], [-80.5, 3.75], [-81.03, 3.97], [-81.25, 4.5], [-81.03, 5.03], [-80.68, 5.18], [-80.53, 5.53], [-80.18, 5.68]]]]}, "2011-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.18, 5.68], [-80.03, 6.03], [-79.5, 6.25], [-79.25, 6.15], [-79.0, 6.25], [-78.47, 6.03], [-78.32, 5.68], [-78.25, 5.65], [-78.0, 5.75], [-77.75, 5.65], [-77.68, 5.68], [-77.53, 6.03], [-77.0, 6.25], [-76.47, 6.03], [-76.25, 5.5], [-76.47, 4.97], [-76.82, 4.82], [-76.85, 4.75], [-76.75, 4.5], [-76.97, 3.97], [-77.5, 3.75], [-78.0, 3.96], [-78.32, 3.82], [-78.47, 3.47], [-79.0, 3.25], [-79.25, 3.35], [-79.5, 3.25], [-80.03, 3.47], [-80.18, 3.82], [-80.25, 3.85], [-80.5, 3.75], [-81.03, 3.97], [-81.25, 4.5], [-81.03, 5.03], [-80.68, 5.18], [-80.53, 5.53], [-80.18, 5.68]]]]}, "2011-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.18, 5.68], [-80.03, 6.03], [-79.5, 6.25], [-79.25, 6.15], [-79.0, 6.25], [-78.47, 6.03], [-78.32, 5.68], [-78.25, 5.65], [-78.0, 5.75], [-77.75, 5.65], [-77.68, 5.68], [-77.53, 6.03], [-77.0, 6.25], [-76.47, 6.03], [-76.25, 5.5], [-76.47, 4.97], [-76.82, 4.82], [-76.85, 4.75], [-76.75, 4.5], [-76.97, 3.97], [-77.5, 3.75], [-78.0, 3.96], [-78.32, 3.82], [-78.47, 3.47], [-79.0, 3.25], [-79.25, 3.35], [-79.5, 3.25], [-80.03, 3.47], [-80.18, 3.82], [-80.25, 3.85], [-80.5, 3.75], [-81.03, 3.97], [-81.25, 4.5], [-81.03, 5.03], [-80.68, 5.18], [-80.53, 5.53], [-80.18, 5.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.64620868092004}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9950156589227095}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.937145698926145, 24.74479365405756, 24.68926320762108, 24.55491969924833]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.937145698926145, 23.54568792431263, 23.663603369425516, 23.82024560581152]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7178401587636358, -0.9187528773894622, -0.9714534100151615, -1.1111451305493327]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7178401587636358, -1.64620868092004, -1.5581430682613586, -1.4044848032250457]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2850463265935332, -1.492754670918794, -1.585280302920133, -1.8633355654174437]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2850463265935332, -1.8141738118808928, -2.01510559657913, -2.330924274221764]}}