{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:37.101735", "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": "2022-Oct-05_to_2022-Oct-07_175.5_-39.0"}, "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": 2022100000244}, "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 05 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 07 2022"}, "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": 73897.39992959399}, "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"]}, "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", "Tasman 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": -39.0}, "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": 175.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "175.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 173.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 177.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -37.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[174.32, -38.32], [174.35, -38.25], [174.25, -38.0], [174.47, -37.47], [175.0, -37.25], [175.5, -37.46], [176.0, -37.25], [176.53, -37.47], [176.7, -37.87], [177.0, -37.75], [177.53, -37.97], [177.75, -38.5], [177.65, -38.75], [177.75, -39.0], [177.65, -39.25], [177.75, -39.5], [177.65, -39.75], [177.75, -40.0], [177.53, -40.53], [177.18, -40.68], [177.03, -41.03], [176.68, -41.18], [176.53, -41.53], [176.0, -41.75], [175.75, -41.65], [175.5, -41.75], [175.25, -41.65], [175.0, -41.75], [174.47, -41.53], [174.25, -41.0], [174.35, -40.75], [174.25, -40.5], [174.35, -40.25], [174.32, -40.18], [174.25, -40.15], [174.0, -40.25], [173.47, -40.03], [173.25, -39.5], [173.47, -38.97], [173.82, -38.82], [173.97, -38.47], [174.32, -38.32]]]]}, "2022-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[174.32, -38.32], [174.35, -38.25], [174.25, -38.0], [174.47, -37.47], [175.0, -37.25], [175.5, -37.46], [176.0, -37.25], [176.53, -37.47], [176.7, -37.87], [177.0, -37.75], [177.53, -37.97], [177.75, -38.5], [177.65, -38.75], [177.75, -39.0], [177.65, -39.25], [177.75, -39.5], [177.65, -39.75], [177.75, -40.0], [177.53, -40.53], [177.18, -40.68], [177.03, -41.03], [176.68, -41.18], [176.53, -41.53], [176.0, -41.75], [175.75, -41.65], [175.5, -41.75], [175.25, -41.65], [175.0, -41.75], [174.47, -41.53], [174.25, -41.0], [174.35, -40.75], [174.25, -40.5], [174.35, -40.25], [174.32, -40.18], [174.25, -40.15], [174.0, -40.25], [173.47, -40.03], [173.25, -39.5], [173.47, -38.97], [173.82, -38.82], [173.97, -38.47], [174.32, -38.32]]]]}, "2022-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[174.32, -38.32], [174.35, -38.25], [174.25, -38.0], [174.47, -37.47], [175.0, -37.25], [175.5, -37.46], [176.0, -37.25], [176.53, -37.47], [176.7, -37.87], [177.0, -37.75], [177.53, -37.97], [177.75, -38.5], [177.65, -38.75], [177.75, -39.0], [177.65, -39.25], [177.75, -39.5], [177.65, -39.75], [177.75, -40.0], [177.53, -40.53], [177.18, -40.68], [177.03, -41.03], [176.68, -41.18], [176.53, -41.53], [176.0, -41.75], [175.75, -41.65], [175.5, -41.75], [175.25, -41.65], [175.0, -41.75], [174.47, -41.53], [174.25, -41.0], [174.35, -40.75], [174.25, -40.5], [174.35, -40.25], [174.32, -40.18], [174.25, -40.15], [174.0, -40.25], [173.47, -40.03], [173.25, -39.5], [173.47, -38.97], [173.82, -38.82], [173.97, -38.47], [174.32, -38.32]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.730399863796663}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.671243920647548}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.748883307273843, 4.7894879610914245, 7.26563278545683]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.3335509158679315, 0.21544943755912982, 3.068334273351354]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.136620174533763, -6.166625269207629, -3.7104863182012506]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.7463730657729, -7.730399863796663, -4.9072038356214875]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9907471778642718, -2.920268447511144, -1.7256450626774797]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.024553316795562, -3.5566398176517353, -2.065576598011423]}}