{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:22.780813", "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-Sep-15_to_2011-Sep-18_166.0_-22.5"}, "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": 2011090000688}, "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": "September 15 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 18 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": 51626.84602380557}, "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": ["New Caledonia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Pacific-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": ["Coral Sea"]}, "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": -22.5}, "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": 166.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "166.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 162.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 167.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.47, -22.03], [162.25, -21.5], [162.47, -20.97], [163.0, -20.75], [163.25, -20.85], [163.5, -20.75], [163.75, -20.85], [164.0, -20.75], [164.25, -20.85], [164.5, -20.75], [164.75, -20.85], [165.0, -20.75], [165.53, -20.97], [165.68, -21.32], [165.75, -21.35], [166.0, -21.25], [166.25, -21.35], [166.5, -21.25], [166.75, -21.35], [167.0, -21.25], [167.53, -21.47], [167.75, -22.0], [167.53, -22.53], [167.18, -22.68], [167.03, -23.03], [166.5, -23.25], [166.25, -23.15], [166.0, -23.25], [165.75, -23.15], [165.5, -23.25], [165.25, -23.15], [165.0, -23.25], [164.47, -23.03], [164.32, -22.68], [164.25, -22.65], [164.0, -22.75], [163.47, -22.53], [163.32, -22.18], [163.25, -22.15], [163.0, -22.25], [162.47, -22.03]]]]}, "2011-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.47, -22.03], [162.25, -21.5], [162.47, -20.97], [163.0, -20.75], [163.25, -20.85], [163.5, -20.75], [163.75, -20.85], [164.0, -20.75], [164.25, -20.85], [164.32, -20.82], [164.47, -20.47], [165.0, -20.25], [165.53, -20.47], [165.68, -20.82], [166.03, -20.97], [166.18, -21.32], [166.25, -21.35], [166.5, -21.25], [166.75, -21.35], [167.0, -21.25], [167.53, -21.47], [167.75, -22.0], [167.53, -22.53], [167.18, -22.68], [167.03, -23.03], [166.5, -23.25], [166.25, -23.15], [166.0, -23.25], [165.75, -23.15], [165.5, -23.25], [165.25, -23.15], [165.0, -23.25], [164.47, -23.03], [164.32, -22.68], [164.25, -22.65], [164.0, -22.75], [163.47, -22.53], [163.32, -22.18], [163.25, -22.15], [163.0, -22.25], [162.47, -22.03]]]]}, "2011-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.47, -22.03], [162.25, -21.5], [162.47, -20.97], [163.0, -20.75], [163.25, -20.85], [163.5, -20.75], [163.75, -20.85], [164.0, -20.75], [164.25, -20.85], [164.32, -20.82], [164.47, -20.47], [165.0, -20.25], [165.53, -20.47], [165.68, -20.82], [166.03, -20.97], [166.18, -21.32], [166.25, -21.35], [166.5, -21.25], [166.75, -21.35], [167.0, -21.25], [167.53, -21.47], [167.75, -22.0], [167.53, -22.53], [167.18, -22.68], [167.03, -23.03], [166.5, -23.25], [166.25, -23.15], [166.0, -23.25], [165.75, -23.15], [165.5, -23.25], [165.25, -23.15], [165.0, -23.25], [164.47, -23.03], [164.32, -22.68], [164.25, -22.65], [164.0, -22.75], [163.47, -22.53], [163.32, -22.18], [163.25, -22.15], [163.0, -22.25], [162.47, -22.03]]]]}, "2011-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[164.25, -21.0], [164.47, -20.47], [165.0, -20.25], [165.53, -20.47], [165.68, -20.82], [166.03, -20.97], [166.25, -21.5], [166.03, -22.03], [165.5, -22.25], [164.97, -22.03], [164.82, -21.68], [164.47, -21.53], [164.25, -21.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.213240234255238}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5982955252212836}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.65578502688544, 18.86742826560203, 19.67710822019626, 18.299418081073156]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.44434774128507, 15.166717749576492, 16.596880636715355, 18.251560001053974]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.334837809462993, -2.07429190699981, -1.3223469158932188, -1.905527299233455]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.847295728768188, -3.213240234255238, -2.601898631500262, -1.9489226148656371]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5089725326462382, -2.2214227773066595, -1.3633640430377387, -1.3699865207440083]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8638001138749059, -2.5535249885454103, -1.7730933920122294, -1.4593090710650582]}}