{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:34.989901", "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-Jun-01_to_2012-Jun-05_189.0_-13.0"}, "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": 2012060000037}, "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": "June 01 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 05 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 63166.49282936386}, "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": ["Samoa"]}, "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": ["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": -13.0}, "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": 189.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "189.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 187.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 190.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.25, -12.5], [-173.03, -11.97], [-172.5, -11.75], [-172.25, -11.85], [-172.0, -11.75], [-171.75, -11.85], [-171.5, -11.75], [-171.25, -11.85], [-171.0, -11.75], [-170.47, -11.97], [-170.32, -12.32], [-170.25, -12.35], [-170.0, -12.25], [-169.47, -12.47], [-169.25, -13.0], [-169.47, -13.53], [-170.0, -13.75], [-170.25, -13.65], [-170.5, -13.75], [-170.75, -13.65], [-171.0, -13.75], [-171.25, -13.65], [-171.5, -13.75], [-171.75, -13.65], [-172.0, -13.75], [-172.53, -13.53], [-172.68, -13.18], [-173.03, -13.03], [-173.25, -12.5]]]]}, "2012-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.25, -12.5], [-173.03, -11.97], [-172.5, -11.75], [-172.25, -11.85], [-172.0, -11.75], [-171.75, -11.85], [-171.5, -11.75], [-171.25, -11.85], [-171.0, -11.75], [-170.47, -11.97], [-170.32, -12.32], [-170.25, -12.35], [-170.0, -12.25], [-169.47, -12.47], [-169.25, -13.0], [-169.47, -13.53], [-170.0, -13.75], [-170.25, -13.65], [-170.5, -13.75], [-170.75, -13.65], [-171.0, -13.75], [-171.25, -13.65], [-171.5, -13.75], [-171.75, -13.65], [-172.0, -13.75], [-172.53, -13.53], [-172.68, -13.18], [-173.03, -13.03], [-173.25, -12.5]]]]}, "2012-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.04, -13.0], [-173.25, -12.5], [-173.03, -11.97], [-172.5, -11.75], [-172.25, -11.85], [-172.0, -11.75], [-171.75, -11.85], [-171.5, -11.75], [-171.25, -11.85], [-171.0, -11.75], [-170.47, -11.97], [-170.32, -12.32], [-170.25, -12.35], [-170.0, -12.25], [-169.47, -12.47], [-169.32, -12.82], [-168.97, -12.97], [-168.75, -13.5], [-168.97, -14.03], [-169.5, -14.25], [-169.75, -14.15], [-169.82, -14.18], [-169.97, -14.53], [-170.5, -14.75], [-170.75, -14.65], [-171.0, -14.75], [-171.25, -14.65], [-171.5, -14.75], [-171.75, -14.65], [-172.0, -14.75], [-172.25, -14.65], [-172.5, -14.75], [-173.03, -14.53], [-173.25, -14.0], [-173.15, -13.75], [-173.25, -13.5], [-173.04, -13.0]]]]}, "2012-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.03, -12.97], [-172.5, -12.75], [-172.25, -12.85], [-172.0, -12.75], [-171.75, -12.85], [-171.68, -12.82], [-171.53, -12.47], [-171.0, -12.25], [-170.47, -12.47], [-170.32, -12.82], [-170.25, -12.85], [-170.0, -12.75], [-169.75, -12.85], [-169.5, -12.75], [-168.97, -12.97], [-168.75, -13.5], [-168.97, -14.03], [-169.5, -14.25], [-169.75, -14.15], [-169.82, -14.18], [-169.97, -14.53], [-170.5, -14.75], [-170.75, -14.65], [-171.0, -14.75], [-171.25, -14.65], [-171.5, -14.75], [-171.75, -14.65], [-172.0, -14.75], [-172.25, -14.65], [-172.5, -14.75], [-173.03, -14.53], [-173.25, -14.0], [-173.15, -13.75], [-173.25, -13.5], [-173.03, -12.97]]]]}, "2012-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.03, -12.97], [-172.5, -12.75], [-172.25, -12.85], [-172.0, -12.75], [-171.75, -12.85], [-171.68, -12.82], [-171.53, -12.47], [-171.0, -12.25], [-170.47, -12.47], [-170.32, -12.82], [-170.25, -12.85], [-170.0, -12.75], [-169.75, -12.85], [-169.5, -12.75], [-168.97, -12.97], [-168.75, -13.5], [-168.97, -14.03], [-169.5, -14.25], [-169.75, -14.15], [-169.82, -14.18], [-169.97, -14.53], [-170.5, -14.75], [-170.75, -14.65], [-171.0, -14.75], [-171.25, -14.65], [-171.5, -14.75], [-171.75, -14.65], [-172.0, -14.75], [-172.25, -14.65], [-172.5, -14.75], [-173.03, -14.53], [-173.25, -14.0], [-173.15, -13.75], [-173.25, -13.5], [-173.03, -12.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.3717970748099333}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0401116394757712}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.196284833775167, 26.277779641374707, 25.99917005029397, 25.765501528227333, 25.50620180280646]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.096904521711963, 26.136088442785365, 24.165602106775452, 24.18768457077016, 24.135716065278814]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.127159257529052, -1.0138129832607712, -0.9684171464922455, -0.9619272588626498, -1.1920532274819318]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.221747535898544, -1.0693414860498933, -1.1445131827994146, -1.1910514797464202, -1.3717970748099333]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7530221579864405, -1.6157711337463143, -1.583005746690628, -1.6242393801697856, -2.027715804788234]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.90435677247752, -1.6762664704381676, -1.912411658123672, -2.041087804211892, -2.3087888364583167]}}