{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:50.505239", "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-Jul-21_to_2014-Jul-23_179.0_-38.0"}, "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": 2014070000954}, "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": "July 21 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 23 2014"}, "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": 54209.02244651435}, "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 Zealand"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["New-Zealand", "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": ["South 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": -38.0}, "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": 179.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "179.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 177.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 183.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -38.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[178.0, -36.75], [178.25, -36.85], [178.32, -36.82], [178.47, -36.47], [179.0, -36.25], [179.25, -36.35], [179.5, -36.25], [179.75, -36.35], [180.0, -36.25], [180.0, -38.04], [179.68, -38.18], [179.53, -38.53], [179.0, -38.75], [178.47, -38.53], [178.32, -38.18], [178.25, -38.15], [178.18, -38.18], [178.03, -38.53], [177.5, -38.75], [176.97, -38.53], [176.75, -38.0], [176.97, -37.47], [177.32, -37.32], [177.47, -36.97], [178.0, -36.75]]], [[[-179.75, -36.35], [-179.68, -36.32], [-179.53, -35.97], [-179.0, -35.75], [-178.75, -35.85], [-178.68, -35.82], [-178.53, -35.47], [-178.0, -35.25], [-177.75, -35.35], [-177.5, -35.25], [-177.25, -35.35], [-177.0, -35.25], [-176.47, -35.47], [-176.25, -36.0], [-176.47, -36.53], [-177.0, -36.75], [-177.25, -36.65], [-177.32, -36.68], [-177.47, -37.03], [-177.82, -37.18], [-177.85, -37.25], [-177.82, -37.32], [-177.47, -37.47], [-177.25, -38.0], [-177.47, -38.53], [-178.0, -38.75], [-178.25, -38.65], [-178.5, -38.75], [-178.75, -38.65], [-179.0, -38.75], [-179.53, -38.53], [-179.75, -38.0], [-179.62, -37.7], [-179.75, -37.65], [-179.82, -37.68], [-179.97, -38.03], [-180.0, -38.04], [-180.0, -36.25], [-179.75, -36.35]]]]}, "2014-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[178.0, -36.75], [178.25, -36.85], [178.32, -36.82], [178.47, -36.47], [179.0, -36.25], [179.25, -36.35], [179.5, -36.25], [179.75, -36.35], [180.0, -36.25], [180.0, -38.04], [179.68, -38.18], [179.53, -38.53], [179.0, -38.75], [178.47, -38.53], [178.32, -38.18], [178.25, -38.15], [178.18, -38.18], [178.03, -38.53], [177.5, -38.75], [176.97, -38.53], [176.75, -38.0], [176.97, -37.47], [177.32, -37.32], [177.47, -36.97], [178.0, -36.75]]], [[[-179.75, -36.35], [-179.68, -36.32], [-179.53, -35.97], [-179.0, -35.75], [-178.75, -35.85], [-178.68, -35.82], [-178.53, -35.47], [-178.0, -35.25], [-177.75, -35.35], [-177.5, -35.25], [-177.25, -35.35], [-177.0, -35.25], [-176.47, -35.47], [-176.25, -36.0], [-176.47, -36.53], [-177.0, -36.75], [-177.25, -36.65], [-177.32, -36.68], [-177.47, -37.03], [-177.82, -37.18], [-177.85, -37.25], [-177.82, -37.32], [-177.47, -37.47], [-177.25, -38.0], [-177.47, -38.53], [-178.0, -38.75], [-178.25, -38.65], [-178.5, -38.75], [-178.75, -38.65], [-179.0, -38.75], [-179.53, -38.53], [-179.75, -38.0], [-179.62, -37.7], [-179.75, -37.65], [-179.82, -37.68], [-179.97, -38.03], [-180.0, -38.04], [-180.0, -36.25], [-179.75, -36.35]]]]}, "2014-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[178.0, -36.75], [178.25, -36.85], [178.32, -36.82], [178.47, -36.47], [179.0, -36.25], [179.25, -36.35], [179.5, -36.25], [179.75, -36.35], [180.0, -36.25], [180.0, -38.04], [179.68, -38.18], [179.53, -38.53], [179.0, -38.75], [178.47, -38.53], [178.32, -38.18], [178.25, -38.15], [178.18, -38.18], [178.03, -38.53], [177.5, -38.75], [176.97, -38.53], [176.75, -38.0], [176.97, -37.47], [177.32, -37.32], [177.47, -36.97], [178.0, -36.75]]], [[[-179.75, -36.35], [-179.68, -36.32], [-179.53, -35.97], [-179.0, -35.75], [-178.75, -35.85], [-178.68, -35.82], [-178.53, -35.47], [-178.0, -35.25], [-177.75, -35.35], [-177.5, -35.25], [-177.25, -35.35], [-177.0, -35.25], [-176.47, -35.47], [-176.25, -36.0], [-176.47, -36.53], [-177.0, -36.75], [-177.25, -36.65], [-177.32, -36.68], [-177.47, -37.03], [-177.82, -37.18], [-177.85, -37.25], [-177.82, -37.32], [-177.47, -37.47], [-177.25, -38.0], [-177.47, -38.53], [-178.0, -38.75], [-178.25, -38.65], [-178.5, -38.75], [-178.75, -38.65], [-179.0, -38.75], [-179.53, -38.53], [-179.75, -38.0], [-179.62, -37.7], [-179.75, -37.65], [-179.82, -37.68], [-179.97, -38.03], [-180.0, -38.04], [-180.0, -36.25], [-179.75, -36.35]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.368662611835248}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4474012505970824}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.058789894259064, 10.162430435596946, 11.638691877219003]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.798308076097385, 4.353840029390369, 5.609077181666294]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4016319448843975, -3.229272345961138, -1.7112994609457117]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3370042559182025, -4.368662611835248, -3.028675349738819]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0241194012642394, -2.698398547254069, -1.4292505637265471]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6085364123814503, -3.2061708217668867, -1.5652067571435913]}}