{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:05.526700", "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": "2015-Jan-16_to_2015-Jan-18_285.0_-52.5"}, "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": 2015010000751}, "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 16 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 18 2015"}, "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": 117802.26719583382}, "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": ["Chile"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Pacific-Ocean", "S.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": -52.5}, "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": 285.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "285.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 278.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 286.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -54.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -49.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.75, -53.0], [-81.53, -52.47], [-81.18, -52.32], 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-53.65], [-79.0, -53.75], [-79.25, -53.65], [-79.32, -53.68], [-79.47, -54.03], [-80.0, -54.25], [-80.25, -54.15], [-80.5, -54.25], [-81.03, -54.03], [-81.18, -53.68], [-81.53, -53.53], [-81.75, -53.0]]]]}, "2015-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.75, -53.0], [-81.53, -52.47], [-81.18, -52.32], [-81.03, -51.97], [-80.5, -51.75], [-79.97, -51.97], [-79.82, -52.32], [-79.75, -52.35], [-79.68, -52.32], [-79.54, -52.0], [-79.75, -51.5], [-79.65, -51.25], [-79.75, -51.0], [-79.65, -50.75], [-79.75, -50.5], [-79.53, -49.97], [-79.18, -49.82], [-79.03, -49.47], [-78.5, -49.25], [-78.0, -49.46], [-77.5, -49.25], [-76.97, -49.47], [-76.82, -49.82], [-76.47, -49.97], [-76.32, -50.32], [-76.25, -50.35], [-76.0, -50.25], [-75.47, -50.47], [-75.32, -50.82], [-75.25, -50.85], [-75.0, -50.75], [-74.75, -50.85], [-74.5, -50.75], [-73.97, -50.97], [-73.82, -51.32], [-73.47, -51.47], [-73.25, -52.0], [-73.47, -52.53], [-74.0, -52.75], [-74.25, -52.65], [-74.32, 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"value": -2.4020426011331324}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5185790745088987}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.478250100775028, 7.156506084586169, 7.4228494259085664]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.4049167373264595, 6.0405510527302795, 6.827866444395056]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3280598685764524, -1.7080673704402696, -1.5196099845099742]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8292596195129818, -2.4020426011331324, -1.8202256372813963]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5741662277673425, -2.0233078734817562, -1.6431642255081766]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.023516058368683, -2.648636110155958, -1.9919998455083936]}}