{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:22.105224", "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": "2014-May-07_to_2014-May-12_34.5_-69.0"}, "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": 2014050000336}, "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": "May 07 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 12 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 52084.94286076679}, "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": ["Southern 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": -69.0}, "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": 34.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 28.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -70.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -68.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -70.53], [31.75, -70.0], [31.97, -69.47], [32.5, -69.25], [32.75, -69.35], [32.82, -69.32], [32.97, -68.97], [33.32, -68.82], [33.47, -68.47], [34.0, -68.25], [34.25, -68.35], [34.5, -68.25], [34.75, -68.35], [35.0, -68.25], [35.25, -68.35], [35.5, -68.25], [35.75, -68.35], [36.0, -68.25], [36.25, -68.35], [36.5, -68.25], [36.75, -68.35], [37.0, -68.25], [37.53, -68.47], [37.75, -69.0], [37.53, -69.53], [37.18, -69.68], [37.03, -70.03], [36.68, -70.18], [36.53, -70.53], [36.0, -70.75], [35.75, -70.65], [35.68, -70.68], [35.53, -71.03], [35.0, -71.25], [34.75, -71.15], [34.5, -71.25], [34.25, -71.15], [34.0, -71.25], [33.75, -71.15], [33.5, -71.25], [32.97, -71.03], [32.82, -70.68], [32.75, -70.65], [32.5, -70.75], [31.97, -70.53]]]]}, "2014-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -70.53], [31.75, -70.0], [31.97, -69.47], [32.5, -69.25], [32.75, -69.35], [32.82, -69.32], [32.97, -68.97], [33.32, -68.82], [33.47, -68.47], [34.0, -68.25], [34.25, -68.35], [34.5, -68.25], [34.75, -68.35], [35.0, -68.25], [35.25, -68.35], [35.5, -68.25], [35.75, -68.35], [36.0, -68.25], [36.25, -68.35], [36.5, -68.25], [36.75, -68.35], [37.0, -68.25], [37.53, -68.47], [37.75, -69.0], [37.53, -69.53], [37.18, -69.68], [37.03, -70.03], [36.68, -70.18], [36.53, -70.53], [36.0, -70.75], [35.75, -70.65], [35.68, -70.68], [35.53, -71.03], [35.0, -71.25], [34.75, -71.15], [34.5, -71.25], [34.25, -71.15], [34.0, -71.25], [33.75, -71.15], [33.5, -71.25], [32.97, -71.03], [32.82, -70.68], [32.75, -70.65], [32.5, -70.75], [31.97, -70.53]]]]}, "2014-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, -70.03], [27.75, -69.5], [27.97, -68.97], [28.5, -68.75], [28.75, -68.85], [29.0, -68.75], [29.25, -68.85], [29.5, -68.75], [29.75, -68.85], [29.82, -68.82], [29.97, -68.47], [30.5, -68.25], [30.75, -68.35], [31.0, -68.25], [31.25, -68.35], [31.5, -68.25], [31.75, -68.35], [31.82, -68.32], [31.97, -67.97], [32.5, -67.75], [33.0, -67.96], [33.5, -67.75], [33.75, -67.85], [34.0, -67.75], [34.25, -67.85], [34.5, -67.75], [35.03, -67.97], [35.18, -68.32], [35.25, -68.35], [35.5, -68.25], [35.75, -68.35], [36.0, -68.25], [36.25, -68.35], [36.5, -68.25], [36.75, -68.35], [37.0, -68.25], [37.53, -68.47], [37.75, -69.0], [37.53, -69.53], [37.18, -69.68], [37.03, -70.03], [36.68, -70.18], [36.53, -70.53], [36.0, -70.75], [35.75, -70.65], [35.68, -70.68], [35.53, -71.03], [35.0, -71.25], [34.75, -71.15], [34.5, -71.25], [34.25, -71.15], [34.0, -71.25], [33.75, -71.15], [33.5, -71.25], [32.97, -71.03], [32.82, -70.68], [32.75, -70.65], [32.5, -70.75], [32.25, -70.65], [32.0, -70.75], [31.75, -70.65], [31.5, -70.75], [30.97, -70.53], [30.82, -70.18], [30.75, -70.15], [30.5, -70.25], [30.25, -70.15], [30.0, -70.25], [29.75, -70.15], [29.5, -70.25], [29.25, -70.15], [29.0, -70.25], [28.75, -70.15], [28.5, -70.25], [27.97, -70.03]]]]}, "2014-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, -70.03], [27.75, -69.5], [27.97, -68.97], [28.5, -68.75], [28.75, -68.85], [29.0, -68.75], [29.25, -68.85], [29.5, -68.75], [29.75, -68.85], [29.82, -68.82], [29.97, -68.47], [30.5, -68.25], [30.75, -68.35], [31.0, -68.25], [31.25, -68.35], [31.5, -68.25], [31.75, -68.35], [31.82, -68.32], [31.97, -67.97], [32.5, -67.75], [33.0, -67.96], [33.5, -67.75], [33.75, -67.85], [34.0, -67.75], [34.25, -67.85], [34.5, -67.75], [35.03, -67.97], [35.18, -68.32], [35.25, -68.35], [35.5, -68.25], [36.03, -68.47], [36.25, -69.0], [36.15, -69.25], [36.25, -69.5], [36.03, -70.03], [35.5, -70.25], [35.25, -70.15], [35.0, -70.25], [34.5, -70.04], [34.0, -70.25], [33.75, -70.15], [33.68, -70.18], [33.53, -70.53], [33.0, -70.75], [32.75, -70.65], [32.5, -70.75], [32.25, -70.65], [32.0, -70.75], [31.75, -70.65], [31.5, -70.75], [30.97, -70.53], [30.82, -70.18], [30.75, -70.15], [30.5, -70.25], [30.25, -70.15], [30.0, -70.25], [29.75, -70.15], [29.5, -70.25], [29.25, -70.15], [29.0, -70.25], [28.75, -70.15], [28.5, -70.25], [27.97, -70.03]]]]}, "2014-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, -70.03], [27.75, -69.5], [27.97, -68.97], [28.5, -68.75], [28.75, -68.85], [29.0, -68.75], [29.25, -68.85], [29.5, -68.75], [29.75, -68.85], [29.82, -68.82], [29.97, -68.47], [30.5, -68.25], [30.75, -68.35], [31.0, -68.25], [31.25, -68.35], [31.5, -68.25], [31.75, -68.35], [31.82, -68.32], [31.97, -67.97], [32.5, -67.75], [33.0, -67.96], [33.5, -67.75], [33.75, -67.85], [34.0, -67.75], [34.25, -67.85], [34.5, -67.75], [35.03, -67.97], [35.18, -68.32], [35.53, -68.47], [35.75, -69.0], [35.53, -69.53], [35.0, -69.75], [34.75, -69.65], [34.5, -69.75], [34.25, -69.65], [34.18, -69.68], [34.03, -70.03], [33.68, -70.18], [33.53, -70.53], [33.0, -70.75], [32.5, -70.54], [32.0, -70.75], [31.75, -70.65], [31.5, -70.75], [30.97, -70.53], [30.82, -70.18], [30.75, -70.15], [30.5, -70.25], [30.25, -70.15], [30.0, -70.25], [29.75, -70.15], [29.5, -70.25], [29.25, -70.15], [29.0, -70.25], [28.75, -70.15], [28.5, -70.25], [27.97, -70.03]]]]}, "2014-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.47, -70.03], [29.25, -69.5], [29.47, -68.97], [30.0, -68.75], [30.25, -68.85], [30.32, -68.82], [30.47, -68.47], [31.0, -68.25], [31.25, -68.35], [31.5, -68.25], [31.75, -68.35], [32.0, -68.25], [32.25, -68.35], [32.5, -68.25], [32.75, -68.35], [33.0, -68.25], [33.25, -68.35], [33.5, -68.25], [33.75, -68.35], [34.0, -68.25], [34.25, -68.35], [34.5, -68.25], [34.75, -68.35], [35.0, -68.25], [35.53, -68.47], [35.75, -69.0], [35.53, -69.53], [35.0, -69.75], [34.75, -69.65], [34.5, -69.75], [34.25, -69.65], [34.18, -69.68], [34.03, -70.03], [33.68, -70.18], [33.53, -70.53], [33.0, -70.75], [32.5, -70.54], [32.0, -70.75], [31.75, -70.65], [31.5, -70.75], [30.97, -70.53], [30.82, -70.18], [30.75, -70.15], [30.5, -70.25], [30.25, -70.15], [30.0, -70.25], [29.47, -70.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -15.188246528529163}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.401832179799468}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-25.556860047407355, -25.26607490789351, -25.52413256823877, -24.333016453165015, -23.728162094636616, -25.7175198864754]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-31.71612532062389, -31.702395194201813, -31.103240884301186, -31.22554948173908, -29.472827826067743, -30.733079832313393]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.802280433861564, -7.534243800036881, -9.028786681198207, -8.68082772651612, -7.99558445728629, -8.839470693004026]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-12.824634001756067, -12.148167550490996, -15.188246528529163, -13.03877082071969, -12.293958840474176, -12.866479502277713]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.624691075640382, -1.624267368577863, -1.9060197973443411, -1.8016997136669746, -1.702507391481768, -1.7700328419310138]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0978350526637475, -2.0921398513741774, -2.6968975309507517, -2.4724582546542577, -2.2909884002727057, -2.2432338666226044]}}