{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:48.638282", "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-Oct-11_to_2010-Oct-13_160.5_-72.0"}, "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": 2010100000456}, "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": "October 11 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 13 2010"}, "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": 102557.9279694483}, "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": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": -72.0}, "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": 160.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "160.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 145.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 162.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -73.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -68.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.25, -69.0], [145.47, -68.47], [146.0, -68.25], [146.25, -68.35], [146.5, -68.25], [146.75, -68.35], [147.0, -68.25], [147.25, -68.35], [147.5, -68.25], [147.75, -68.35], [148.0, -68.25], [148.25, -68.35], [148.5, -68.25], [148.75, -68.35], [149.0, -68.25], [149.25, -68.35], [149.5, -68.25], [150.03, -68.47], [150.18, -68.82], [150.25, -68.85], [150.5, -68.75], [150.75, -68.85], [151.0, -68.75], [151.25, -68.85], [151.5, -68.75], [151.75, -68.85], [152.0, -68.75], [152.25, -68.85], [152.5, -68.75], [153.03, -68.97], [153.18, -69.32], [153.25, -69.35], [153.5, -69.25], [153.75, -69.35], [154.0, -69.25], [154.25, -69.35], [154.5, -69.25], [155.03, -69.47], [155.18, -69.82], [155.25, -69.85], [155.5, -69.75], [155.75, -69.85], [156.0, -69.75], [156.5, -69.96], [157.0, -69.75], [157.53, -69.97], [157.68, -70.32], [157.75, -70.35], [158.0, -70.25], [158.25, -70.35], [158.5, -70.25], [158.75, -70.35], [159.0, -70.25], [159.53, -70.47], [159.68, -70.82], [159.75, -70.85], [160.0, -70.75], [160.25, -70.85], [160.5, -70.75], [160.75, -70.85], [161.0, -70.75], [161.53, -70.97], [161.68, -71.32], [162.03, -71.47], [162.18, -71.82], [162.53, -71.97], [162.75, -72.5], [162.65, -72.75], [162.75, -73.0], [162.53, -73.53], [162.0, -73.75], [161.47, -73.53], [161.32, -73.18], [161.0, -73.04], [160.5, -73.25], [159.97, -73.03], [159.82, -72.68], [159.75, -72.65], [159.5, -72.75], [159.25, -72.65], [159.0, -72.75], [158.75, -72.65], [158.5, -72.75], [157.97, -72.53], [157.82, -72.18], [157.75, -72.15], [157.5, -72.25], [157.25, -72.15], [157.0, -72.25], [156.75, -72.15], [156.5, -72.25], [156.25, -72.15], [156.0, -72.25], [155.75, -72.15], [155.5, -72.25], [155.25, -72.15], [155.0, -72.25], [154.75, -72.15], [154.5, -72.25], [154.25, -72.15], [154.0, -72.25], [153.75, -72.15], [153.5, -72.25], [153.25, -72.15], [153.0, -72.25], [152.47, -72.03], [152.32, -71.68], [152.25, -71.65], [152.0, -71.75], [151.75, -71.65], [151.5, -71.75], [151.25, -71.65], [151.0, -71.75], [150.75, -71.65], [150.5, -71.75], [149.97, -71.53], [149.82, -71.18], [149.75, -71.15], [149.5, -71.25], [149.25, -71.15], [149.0, -71.25], [148.75, -71.15], [148.5, -71.25], [147.97, -71.03], [147.82, -70.68], [147.75, -70.65], [147.5, -70.75], [147.25, -70.65], [147.0, -70.75], [146.47, -70.53], [146.32, -70.18], [145.97, -70.03], [145.82, -69.68], [145.47, -69.53], [145.25, -69.0]]]]}, "2010-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.25, -69.0], [145.47, -68.47], [146.0, -68.25], [146.25, -68.35], [146.5, -68.25], [146.75, -68.35], [147.0, -68.25], [147.25, -68.35], [147.5, -68.25], [147.75, -68.35], [148.0, -68.25], [148.25, -68.35], [148.5, -68.25], [148.75, -68.35], [149.0, -68.25], [149.25, -68.35], [149.5, -68.25], [150.03, -68.47], [150.18, -68.82], [150.25, -68.85], [150.5, -68.75], [150.75, -68.85], [151.0, -68.75], [151.25, -68.85], [151.5, -68.75], [151.75, -68.85], [152.0, -68.75], [152.25, -68.85], [152.5, -68.75], [153.03, -68.97], [153.18, -69.32], [153.25, -69.35], [153.5, -69.25], [153.75, -69.35], [154.0, -69.25], [154.25, -69.35], [154.5, -69.25], [155.03, -69.47], [155.18, -69.82], [155.25, -69.85], [155.5, -69.75], [155.75, -69.85], [156.0, -69.75], [156.5, -69.96], [157.0, -69.75], [157.53, -69.97], [157.68, -70.32], [157.75, -70.35], [158.0, -70.25], [158.25, -70.35], [158.5, -70.25], [158.75, -70.35], [159.0, -70.25], [159.53, -70.47], [159.68, -70.82], [159.75, -70.85], [160.0, -70.75], [160.25, -70.85], [160.5, -70.75], [160.75, -70.85], [161.0, -70.75], [161.53, -70.97], [161.68, -71.32], [162.03, -71.47], [162.18, -71.82], [162.53, -71.97], [162.75, -72.5], [162.65, -72.75], [162.75, -73.0], [162.53, -73.53], [162.0, -73.75], [161.47, -73.53], [161.32, -73.18], [161.0, -73.04], [160.5, -73.25], [159.97, -73.03], [159.82, -72.68], [159.75, -72.65], [159.5, -72.75], [159.25, -72.65], [159.0, -72.75], [158.75, -72.65], [158.5, -72.75], [157.97, -72.53], [157.82, -72.18], [157.75, -72.15], [157.5, -72.25], [157.25, -72.15], [157.0, -72.25], [156.75, -72.15], [156.5, -72.25], [156.25, -72.15], [156.0, -72.25], [155.75, -72.15], [155.5, -72.25], [155.25, -72.15], [155.0, -72.25], [154.75, -72.15], [154.5, -72.25], [154.25, -72.15], [154.0, -72.25], [153.75, -72.15], [153.5, -72.25], [153.25, -72.15], [153.0, -72.25], [152.47, -72.03], [152.32, -71.68], [152.25, -71.65], [152.0, -71.75], [151.75, -71.65], [151.5, -71.75], [151.25, -71.65], [151.0, -71.75], [150.75, -71.65], [150.5, -71.75], [149.97, -71.53], [149.82, -71.18], [149.75, -71.15], [149.5, -71.25], [149.25, -71.15], [149.0, -71.25], [148.75, -71.15], [148.5, -71.25], [147.97, -71.03], [147.82, -70.68], [147.75, -70.65], [147.5, -70.75], [147.25, -70.65], [147.0, -70.75], [146.47, -70.53], [146.32, -70.18], [145.97, -70.03], [145.82, -69.68], [145.47, -69.53], [145.25, -69.0]]]]}, "2010-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.25, -69.0], [145.47, -68.47], [146.0, -68.25], [146.25, -68.35], [146.5, -68.25], [146.75, -68.35], [147.0, -68.25], [147.25, -68.35], [147.5, -68.25], [147.75, -68.35], [148.0, -68.25], [148.25, -68.35], [148.5, -68.25], [148.75, -68.35], [149.0, -68.25], [149.25, -68.35], [149.5, -68.25], [150.03, -68.47], [150.18, -68.82], [150.25, -68.85], [150.5, -68.75], [150.75, -68.85], [151.0, -68.75], [151.25, -68.85], [151.5, -68.75], [151.75, -68.85], [152.0, -68.75], [152.25, -68.85], [152.5, -68.75], [153.03, -68.97], [153.18, -69.32], [153.25, -69.35], [153.5, -69.25], [153.75, -69.35], [154.0, -69.25], [154.25, -69.35], [154.5, -69.25], [155.03, -69.47], [155.18, -69.82], [155.25, -69.85], [155.5, -69.75], [155.75, -69.85], [156.0, -69.75], [156.5, -69.96], [157.0, -69.75], [157.53, -69.97], [157.68, -70.32], [157.75, -70.35], [158.0, -70.25], [158.25, -70.35], [158.5, -70.25], [158.75, -70.35], [159.0, -70.25], [159.53, -70.47], [159.68, -70.82], [159.75, -70.85], [160.0, -70.75], [160.25, -70.85], [160.5, -70.75], [160.75, -70.85], [161.0, -70.75], [161.53, -70.97], [161.68, -71.32], [162.03, -71.47], [162.18, -71.82], [162.53, -71.97], [162.75, -72.5], [162.65, -72.75], [162.75, -73.0], [162.53, -73.53], [162.0, -73.75], [161.47, -73.53], [161.32, -73.18], [161.0, -73.04], [160.5, -73.25], [159.97, -73.03], [159.82, -72.68], [159.75, -72.65], [159.5, -72.75], [159.25, -72.65], [159.0, -72.75], [158.75, -72.65], [158.5, -72.75], [157.97, -72.53], [157.82, -72.18], [157.75, -72.15], [157.5, -72.25], [157.25, -72.15], [157.0, -72.25], [156.75, -72.15], [156.5, -72.25], [156.25, -72.15], [156.0, -72.25], [155.75, -72.15], [155.5, -72.25], [155.25, -72.15], [155.0, -72.25], [154.75, -72.15], [154.5, -72.25], [154.25, -72.15], [154.0, -72.25], [153.75, -72.15], [153.5, -72.25], [153.25, -72.15], [153.0, -72.25], [152.47, -72.03], [152.32, -71.68], [152.25, -71.65], [152.0, -71.75], [151.75, -71.65], [151.5, -71.75], [151.25, -71.65], [151.0, -71.75], [150.75, -71.65], [150.5, -71.75], [149.97, -71.53], [149.82, -71.18], [149.75, -71.15], [149.5, -71.25], [149.25, -71.15], [149.0, -71.25], [148.75, -71.15], [148.5, -71.25], [147.97, -71.03], [147.82, -70.68], [147.75, -70.65], [147.5, -70.75], [147.25, -70.65], [147.0, -70.75], [146.47, -70.53], [146.32, -70.18], [145.97, -70.03], [145.82, -69.68], [145.47, -69.53], [145.25, -69.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.01266469506561}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.448937159219464}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-39.18336210461709, -40.341494698821236, -38.57989895824434]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-44.91258107846147, -46.18043628635755, -42.83283778903345]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.235474659477697, -8.358531435518834, -6.752805382661848]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.393981604656432, -10.01266469506561, -7.8921623860057935]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.413383280626947, -1.675279588159984, -1.3416857909341282]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.75748082325954, -2.1913603069556142, -1.6296624717259962]}}