{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:38.488787", "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": "2013-Jun-30_to_2013-Jul-03_321.0_74.5"}, "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": 2013060001340}, "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 30 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 03 2013"}, "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": 73761.1155869854}, "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": ["Greenland"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Greenland/Iceland"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": 74.5}, "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": 321.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "321.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 316.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 324.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 72.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 76.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.53, 76.53], [-43.0, 76.75], [-42.75, 76.65], [-42.5, 76.75], [-42.25, 76.65], [-42.0, 76.75], [-41.75, 76.65], [-41.5, 76.75], [-40.97, 76.53], [-40.82, 76.18], [-40.75, 76.15], [-40.5, 76.25], [-40.25, 76.15], [-40.0, 76.25], [-39.75, 76.15], [-39.5, 76.25], [-39.25, 76.15], [-39.0, 76.25], [-38.75, 76.15], [-38.5, 76.25], [-37.97, 76.03], [-37.75, 75.5], [-37.85, 75.25], [-37.75, 75.0], [-37.97, 74.47], [-38.32, 74.32], [-38.35, 74.25], [-38.25, 74.0], [-38.47, 73.47], [-39.0, 73.25], [-39.5, 73.46], [-40.0, 73.25], [-40.53, 73.47], [-40.68, 73.82], [-40.75, 73.85], [-40.82, 73.82], [-40.97, 73.47], [-41.5, 73.25], [-42.03, 73.47], [-42.18, 73.82], [-42.25, 73.85], [-42.5, 73.75], [-43.03, 73.97], [-43.18, 74.32], [-43.53, 74.47], [-43.75, 75.0], [-43.54, 75.5], [-43.75, 76.0], [-43.53, 76.53]]]]}, "2013-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.54, 75.5], [-43.75, 76.0], [-43.53, 76.53], [-43.0, 76.75], [-42.75, 76.65], [-42.5, 76.75], [-42.25, 76.65], [-42.18, 76.68], [-42.03, 77.03], [-41.5, 77.25], [-41.25, 77.15], [-41.0, 77.25], [-40.75, 77.15], [-40.5, 77.25], [-40.25, 77.15], [-40.0, 77.25], [-39.75, 77.15], [-39.5, 77.25], [-39.25, 77.15], [-39.0, 77.25], [-38.47, 77.03], [-38.32, 76.68], [-37.97, 76.53], [-37.82, 76.18], [-37.47, 76.03], [-37.32, 75.68], [-37.25, 75.65], [-37.0, 75.75], [-36.75, 75.65], [-36.5, 75.75], [-35.97, 75.53], [-35.82, 75.18], [-35.47, 75.03], [-35.25, 74.5], [-35.35, 74.25], [-35.25, 74.0], [-35.47, 73.47], [-36.0, 73.25], [-36.25, 73.35], [-36.32, 73.32], [-36.47, 72.97], [-36.82, 72.82], [-36.97, 72.47], [-37.5, 72.25], [-37.75, 72.35], [-38.0, 72.25], [-38.25, 72.35], [-38.5, 72.25], [-38.75, 72.35], [-39.0, 72.25], [-39.25, 72.35], [-39.5, 72.25], [-39.75, 72.35], [-40.0, 72.25], [-40.25, 72.35], [-40.5, 72.25], [-40.75, 72.35], [-41.0, 72.25], [-41.25, 72.35], [-41.5, 72.25], [-42.03, 72.47], [-42.18, 72.82], [-42.25, 72.85], [-42.5, 72.75], [-43.03, 72.97], [-43.18, 73.32], [-43.53, 73.47], [-43.75, 74.0], [-43.54, 74.5], [-43.75, 75.0], [-43.54, 75.5]]]]}, "2013-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.54, 75.5], [-43.75, 76.0], [-43.53, 76.53], [-43.0, 76.75], [-42.75, 76.65], [-42.5, 76.75], [-42.25, 76.65], [-42.18, 76.68], [-42.03, 77.03], [-41.5, 77.25], [-41.25, 77.15], [-41.0, 77.25], [-40.75, 77.15], [-40.5, 77.25], [-40.25, 77.15], [-40.0, 77.25], [-39.75, 77.15], [-39.5, 77.25], [-39.25, 77.15], [-39.0, 77.25], [-38.47, 77.03], [-38.32, 76.68], [-37.97, 76.53], [-37.82, 76.18], [-37.47, 76.03], [-37.32, 75.68], [-37.25, 75.65], [-37.0, 75.75], [-36.75, 75.65], [-36.5, 75.75], [-35.97, 75.53], [-35.82, 75.18], [-35.47, 75.03], [-35.25, 74.5], [-35.35, 74.25], [-35.25, 74.0], [-35.47, 73.47], [-36.0, 73.25], [-36.25, 73.35], [-36.32, 73.32], [-36.47, 72.97], [-36.82, 72.82], [-36.97, 72.47], [-37.5, 72.25], [-37.75, 72.35], [-38.0, 72.25], [-38.25, 72.35], [-38.5, 72.25], [-38.75, 72.35], [-39.0, 72.25], [-39.25, 72.35], [-39.5, 72.25], [-39.75, 72.35], [-40.0, 72.25], 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73.35], [-36.32, 73.32], [-36.47, 72.97], [-36.82, 72.82], [-36.97, 72.47], [-37.5, 72.25], [-37.75, 72.35], [-38.0, 72.25], [-38.25, 72.35], [-38.5, 72.25], [-38.75, 72.35], [-39.0, 72.25], [-39.25, 72.35], [-39.5, 72.25], [-39.75, 72.35], [-40.0, 72.25], [-40.25, 72.35], [-40.5, 72.25], [-40.75, 72.35], [-41.0, 72.25], [-41.25, 72.35], [-41.5, 72.25], [-42.03, 72.47], [-42.18, 72.82], [-42.25, 72.85], [-42.5, 72.75], [-43.03, 72.97], [-43.18, 73.32], [-43.53, 73.47], [-43.75, 74.0], [-43.54, 74.5], [-43.75, 75.0], [-43.54, 75.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.120440758054912}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.483802426877406}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-16.61408064816169, -17.82819085755858, -17.514477360248975, -17.69322585857637]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-17.306215533297518, -19.141222921269417, -18.791068724990623, -19.327675203680172]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.795145603771773, -5.825447766443051, -5.369527838829267, -5.516590919644243]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.398534964194482, -6.959448338234239, -6.574984962617634, -7.120440758054912]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4941823696993692, -1.8089800588287002, -1.6868053495467545, -1.745528439363368]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7413243331487493, -2.1291174217568085, -1.98948349921812, -2.146295625944416]}}