{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:22.989294", "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": "2012-Jan-22_to_2012-Jan-24_175.5_-39.5"}, "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": 2012010001115}, "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": "January 22 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 24 2012"}, "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": 126103.29538509279}, "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": -39.5}, "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": 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": 174.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 178.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[173.96, -42.0], [173.75, -41.5], [173.97, -40.97], [174.5, -40.75], [174.75, -40.85], [175.0, -40.75], [175.25, -40.85], [175.38, -40.8], [175.32, -40.68], [174.97, -40.53], [174.82, -40.18], [174.47, -40.03], [174.25, -39.5], [174.47, -38.97], [175.0, -38.75], [175.25, -38.85], [175.5, -38.75], [176.03, -38.97], [176.18, -39.32], [176.5, -39.46], [176.82, -39.32], [176.97, -38.97], [177.32, -38.82], [177.47, -38.47], [178.0, -38.25], [178.53, -38.47], [178.75, -39.0], [178.54, -39.5], [178.75, -40.0], [178.53, -40.53], [178.0, -40.75], [177.75, -40.65], [177.68, -40.68], [177.65, -40.75], [177.68, -40.82], [178.03, -40.97], [178.25, -41.5], [178.15, -41.75], [178.18, -41.82], [178.53, -41.97], [178.75, -42.5], [178.65, -42.75], [178.75, -43.0], [178.53, -43.53], [178.18, -43.68], [178.15, -43.75], [178.25, -44.0], [178.03, -44.53], [177.68, -44.68], [177.53, -45.03], [177.0, -45.25], [176.47, -45.03], [176.32, -44.68], [176.25, -44.65], [176.0, -44.75], [175.75, -44.65], [175.5, -44.75], [175.25, -44.65], [175.0, -44.75], [174.47, -44.53], [174.32, -44.18], [173.97, -44.03], [173.75, -43.5], [173.96, -43.0], [173.75, -42.5], [173.96, -42.0]]]]}, "2012-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[173.96, -42.0], [173.75, -41.5], [173.97, -40.97], [174.5, -40.75], [174.75, -40.85], [175.0, -40.75], [175.25, -40.85], [175.38, -40.8], [175.32, -40.68], [174.97, -40.53], [174.82, -40.18], [174.47, -40.03], [174.25, -39.5], [174.47, -38.97], [175.0, -38.75], [175.25, -38.85], [175.5, -38.75], [176.03, -38.97], [176.18, -39.32], [176.5, -39.46], [176.82, -39.32], [176.97, -38.97], [177.32, -38.82], [177.47, -38.47], [178.0, -38.25], [178.53, -38.47], [178.75, -39.0], [178.54, -39.5], [178.75, -40.0], [178.53, -40.53], [178.0, -40.75], [177.75, -40.65], [177.68, -40.68], [177.65, -40.75], [177.68, -40.82], [178.03, -40.97], [178.25, -41.5], [178.15, -41.75], [178.18, -41.82], [178.53, -41.97], [178.75, -42.5], [178.65, -42.75], [178.75, -43.0], [178.53, -43.53], [178.18, -43.68], [178.15, -43.75], 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[12.769114113360672, 13.454059940014758, 13.979271661060466]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.958899634340582, 8.939138313617036, 11.586420917177804]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.552723299873163, -2.8879281446869287, -2.37542700283209]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.378743106599529, -6.440000074458737, -3.7985980945077245]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2189919277184087, -1.7880939190872507, -1.4460841595775071]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.8058351712268776, -2.5675128473070283, -1.7500929150569806]}}