{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:15.408958", "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": "2018-Oct-12_to_2018-Oct-14_175.5_-41.0"}, "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": 2018100000426}, "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 12 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 14 2018"}, "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": 130181.39974315776}, "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": -41.0}, "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": 180.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -42.25}, "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": {"2018-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[174.5, -38.25], [174.75, -38.35], [175.0, -38.25], [175.25, -38.35], [175.38, -38.3], [175.25, -38.0], [175.47, -37.47], [176.0, -37.25], [176.25, -37.35], [176.5, -37.25], [176.75, -37.35], [177.0, -37.25], [177.53, -37.47], [177.68, -37.82], [178.03, -37.97], [178.25, -38.5], [178.13, -38.8], [178.53, -38.97], [178.68, -39.32], [178.75, -39.35], [179.0, -39.25], [179.25, -39.35], [179.5, -39.25], [180.0, -39.46], [180.0, -42.54], [179.5, -42.75], [178.97, -42.53], [178.82, -42.18], [178.75, -42.15], [178.5, -42.25], [177.97, -42.03], [177.82, -41.68], [177.75, -41.65], [177.5, -41.75], [176.97, -41.53], [176.82, -41.18], [176.75, -41.15], [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], [174.46, -40.5], [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], [174.5, -38.25]]], [[[-179.97, -39.47], [-179.82, -39.82], [-179.47, -39.97], [-179.25, -40.5], [-179.35, -40.75], [-179.25, -41.0], [-179.35, -41.25], [-179.25, -41.5], [-179.47, -42.03], [-179.82, -42.18], [-179.97, -42.53], [-180.0, -42.54], [-180.0, -39.46], [-179.97, -39.47]]]]}, "2018-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[174.5, -38.25], [174.75, -38.35], [175.0, -38.25], [175.25, -38.35], [175.38, -38.3], [175.25, -38.0], [175.47, -37.47], [176.0, -37.25], [176.25, -37.35], [176.5, -37.25], [176.75, -37.35], [177.0, -37.25], [177.53, -37.47], [177.68, -37.82], [178.03, -37.97], [178.25, -38.5], [178.13, -38.8], [178.53, -38.97], [178.68, -39.32], [178.75, -39.35], [179.0, -39.25], [179.25, -39.35], [179.5, -39.25], [180.0, -39.46], [180.0, -42.54], [179.5, -42.75], [178.97, -42.53], [178.82, -42.18], [178.75, -42.15], [178.5, -42.25], [177.97, -42.03], [177.82, -41.68], [177.75, -41.65], [177.5, -41.75], [176.97, -41.53], [176.82, -41.18], [176.75, -41.15], [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], [174.46, -40.5], [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], [174.5, -38.25]]], [[[-179.97, -39.47], [-179.82, -39.82], [-179.47, -39.97], [-179.25, -40.5], [-179.35, -40.75], [-179.25, -41.0], [-179.35, -41.25], [-179.25, -41.5], [-179.47, -42.03], [-179.82, -42.18], [-179.97, -42.53], [-180.0, -42.54], [-180.0, -39.46], [-179.97, -39.47]]]]}, "2018-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[174.5, -38.25], [174.75, -38.35], [175.0, -38.25], [175.25, -38.35], [175.38, -38.3], [175.25, -38.0], [175.47, -37.47], [176.0, -37.25], [176.25, -37.35], [176.5, -37.25], [176.75, -37.35], [177.0, -37.25], [177.53, -37.47], [177.68, -37.82], [178.03, -37.97], [178.25, -38.5], [178.13, -38.8], [178.53, -38.97], [178.68, -39.32], [178.75, -39.35], [179.0, -39.25], [179.25, -39.35], 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-5.897529540778919}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.081376952483254}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.98947711773127, 8.509711791183577, 9.185110241897974]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.541487370900768, 3.0155544156648943, 3.4543457715338945]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9661765332452785, -3.4430181397815494, -2.8349361844229346]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.654544752633626, -5.897529540778919, -5.3398736550424815]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.723555599448482, -1.932318023510417, -1.6039729811718657]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.473000568177783, -2.5699869293176043, -2.07068113853519]}}