{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:45.170685", "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": "2011-Feb-09_to_2011-Feb-12_295.5_-17.5"}, "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": 2011020000554}, "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": "February 09 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 12 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 76826.60557845401}, "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": ["Bolivia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon"]}, "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": []}, "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": -17.5}, "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": 295.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "295.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 293.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 297.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.25, -17.0], [-66.03, -16.47], [-65.68, -16.32], 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[-64.5, -14.75], [-64.25, -14.85], [-64.0, -14.75], [-63.75, -14.85], [-63.5, -14.75], [-62.97, -14.97], [-62.82, -15.32], [-62.75, -15.35], [-62.5, -15.25], [-61.97, -15.47], [-61.75, -16.0], [-61.97, -16.53], [-62.5, -16.75], [-62.75, -16.65], [-63.0, -16.75], [-63.25, -16.65], [-63.32, -16.68], [-63.35, -16.75], [-63.25, -17.0], [-63.46, -17.5], [-63.25, -18.0], [-63.35, -18.25], [-63.25, -18.5], [-63.35, -18.75], [-63.25, -19.0], [-63.47, -19.53], [-64.0, -19.75], [-64.25, -19.65], [-64.5, -19.75], [-65.03, -19.53], [-65.18, -19.18], [-65.53, -19.03], [-65.75, -18.5], [-65.65, -18.25], [-65.75, -18.0], [-65.65, -17.75], [-65.68, -17.68], [-66.03, -17.53], [-66.18, -17.18], [-66.53, -17.03], [-66.75, -16.5]]]]}, "2011-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.75, -16.5], [-66.53, -15.97], [-66.0, -15.75], [-65.5, -15.96], [-65.18, -15.82], [-65.15, -15.75], [-65.25, -15.5], [-65.03, -14.97], [-64.5, -14.75], [-64.25, -14.85], [-64.0, -14.75], [-63.75, -14.85], [-63.5, -14.75], [-62.97, -14.97], [-62.82, -15.32], [-62.75, -15.35], [-62.5, -15.25], [-61.97, -15.47], [-61.75, -16.0], [-61.97, -16.53], [-62.5, -16.75], [-62.75, -16.65], [-63.0, -16.75], [-63.25, -16.65], [-63.32, -16.68], [-63.35, -16.75], [-63.25, -17.0], [-63.46, -17.5], [-63.25, -18.0], [-63.35, -18.25], [-63.25, -18.5], [-63.35, -18.75], [-63.25, -19.0], [-63.47, -19.53], [-64.0, -19.75], [-64.25, -19.65], [-64.5, -19.75], [-65.03, -19.53], [-65.18, -19.18], [-65.53, -19.03], [-65.75, -18.5], [-65.65, -18.25], [-65.75, -18.0], [-65.65, -17.75], [-65.68, -17.68], [-66.03, -17.53], [-66.18, -17.18], [-66.53, -17.03], [-66.75, -16.5]]]]}, "2011-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.75, -16.5], [-66.53, -15.97], [-66.0, -15.75], [-65.47, -15.97], [-65.32, -16.32], [-65.07, -16.43], [-65.25, -16.0], [-65.03, -15.47], [-64.5, -15.25], [-63.97, -15.47], [-63.75, -16.0], [-63.97, -16.53], [-64.5, -16.75], [-63.97, -16.97], [-63.75, -17.5], [-63.97, -18.03], [-64.5, -18.25], [-64.75, -18.15], [-65.0, -18.25], [-65.53, -18.03], [-65.68, -17.68], [-66.03, -17.53], [-66.18, -17.18], [-66.53, -17.03], [-66.75, -16.5]], [[-64.93, -16.57], [-64.82, -16.82], [-64.75, -16.85], [-64.5, -16.75], [-64.93, -16.57]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2608934237304084}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2297429577384564}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.721819065744796, 20.35865600679648, 20.649571263689324, 20.388673471511368]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.963258170100687, 15.075127642309667, 14.31328155113954, 15.815863827250553]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.210326855792971, -2.4995785403799267, -2.112127564009453, -1.5352784851210572]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.783257630927494, -3.2608934237304084, -2.911659700048915, -1.731148137240666]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5250051348547664, -1.8105450235479326, -1.5733125809272452, -1.3739053856256012]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8152054902198704, -2.45667342606179, -2.2300375810565787, -1.5516155026914997]}}