{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:01.282553", "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": "2016-Aug-21_to_2016-Aug-25_322.5_-54.0"}, "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": 2016080000597}, "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": "August 21 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 25 2016"}, "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": 131958.97731295112}, "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": ["South Georgia and the South Sandwich Islands"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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 Atlantic 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": -54.0}, "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": 322.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "322.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 316.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 325.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -55.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -52.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.25, -53.0], [-44.03, -52.47], [-43.5, -52.25], [-43.25, -52.35], [-43.18, -52.32], [-43.03, -51.97], [-42.5, -51.75], [-42.25, -51.85], [-42.0, -51.75], [-41.75, -51.85], [-41.5, -51.75], [-40.97, -51.97], [-40.82, -52.32], [-40.75, -52.35], [-40.68, -52.32], [-40.53, -51.97], [-40.0, -51.75], [-39.75, -51.85], [-39.5, -51.75], [-39.25, -51.85], [-39.0, -51.75], [-38.75, -51.85], [-38.5, -51.75], [-38.25, -51.85], [-38.0, -51.75], [-37.75, -51.85], [-37.5, -51.75], [-36.97, -51.97], [-36.82, -52.32], [-36.75, -52.35], [-36.5, -52.25], [-36.25, -52.35], [-36.0, -52.25], [-35.47, -52.47], [-35.32, -52.82], [-35.25, -52.85], [-35.0, -52.75], [-34.47, -52.97], [-34.25, -53.5], [-34.47, -54.03], [-34.82, -54.18], [-34.97, -54.53], [-35.32, -54.68], [-35.47, -55.03], [-36.0, -55.25], [-36.25, -55.15], [-36.5, -55.25], [-36.75, -55.15], [-37.0, -55.25], [-37.25, -55.15], [-37.32, -55.18], [-37.47, -55.53], [-38.0, -55.75], [-38.25, -55.65], [-38.5, -55.75], [-38.75, -55.65], [-39.0, -55.75], [-39.25, -55.65], [-39.5, -55.75], [-39.75, -55.65], [-40.0, -55.75], [-40.25, -55.65], [-40.5, -55.75], [-41.03, -55.53], [-41.18, -55.18], [-41.53, -55.03], [-41.68, -54.68], [-42.03, -54.53], [-42.18, -54.18], [-42.25, -54.15], [-42.5, -54.25], [-42.75, -54.15], [-43.0, -54.25], [-43.53, -54.03], [-43.68, -53.68], [-44.03, -53.53], [-44.25, -53.0]]]]}, "2016-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.25, -53.0], [-44.03, -52.47], [-43.5, -52.25], [-43.25, -52.35], [-43.18, -52.32], [-43.03, -51.97], [-42.5, -51.75], [-42.25, -51.85], [-42.0, -51.75], [-41.75, -51.85], [-41.5, -51.75], [-40.97, -51.97], [-40.82, -52.32], [-40.75, -52.35], [-40.68, -52.32], [-40.53, -51.97], [-40.0, -51.75], [-39.75, -51.85], [-39.5, -51.75], [-39.25, -51.85], [-39.0, -51.75], [-38.75, -51.85], [-38.5, -51.75], [-38.25, -51.85], [-38.0, -51.75], [-37.75, -51.85], [-37.5, -51.75], [-36.97, -51.97], [-36.82, -52.32], [-36.75, -52.35], [-36.5, -52.25], [-36.25, -52.35], [-36.0, -52.25], [-35.47, -52.47], [-35.32, -52.82], [-35.25, -52.85], [-35.0, -52.75], [-34.47, -52.97], [-34.25, -53.5], [-34.47, -54.03], [-34.82, -54.18], [-34.97, -54.53], [-35.32, -54.68], [-35.47, -55.03], [-36.0, -55.25], [-36.25, -55.15], [-36.5, -55.25], [-36.75, -55.15], [-37.0, -55.25], [-37.25, -55.15], [-37.32, -55.18], [-37.47, -55.53], [-38.0, -55.75], [-38.25, -55.65], [-38.5, -55.75], [-38.75, -55.65], [-39.0, -55.75], [-39.25, -55.65], [-39.5, -55.75], [-39.75, -55.65], [-40.0, -55.75], [-40.25, -55.65], [-40.5, -55.75], [-41.03, -55.53], [-41.18, -55.18], [-41.53, -55.03], [-41.68, -54.68], [-42.03, -54.53], [-42.18, -54.18], [-42.25, -54.15], [-42.5, -54.25], [-42.75, -54.15], [-43.0, -54.25], [-43.53, -54.03], [-43.68, -53.68], [-44.03, -53.53], [-44.25, -53.0]]]]}, "2016-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.25, -53.0], [-44.03, -52.47], [-43.5, -52.25], [-43.25, -52.35], [-43.18, -52.32], [-43.03, -51.97], [-42.5, -51.75], [-42.25, -51.85], [-42.0, -51.75], [-41.75, -51.85], [-41.5, -51.75], [-40.97, -51.97], [-40.82, -52.32], [-40.75, -52.35], [-40.68, -52.32], [-40.53, -51.97], [-40.0, -51.75], [-39.75, -51.85], [-39.5, -51.75], [-39.25, -51.85], [-39.0, -51.75], [-38.75, -51.85], [-38.5, -51.75], [-38.25, -51.85], [-38.0, -51.75], [-37.75, -51.85], [-37.5, -51.75], [-36.97, -51.97], [-36.82, -52.32], [-36.75, -52.35], [-36.5, -52.25], [-36.25, -52.35], [-36.0, -52.25], [-35.47, -52.47], [-35.32, -52.82], [-35.25, -52.85], [-35.0, -52.75], [-34.47, -52.97], [-34.25, -53.5], [-34.47, -54.03], [-34.82, -54.18], [-34.97, -54.53], [-35.32, -54.68], [-35.47, -55.03], [-36.0, -55.25], [-36.25, -55.15], [-36.5, -55.25], [-36.75, -55.15], [-37.0, -55.25], [-37.25, -55.15], [-37.32, -55.18], [-37.47, -55.53], [-38.0, -55.75], [-38.25, -55.65], [-38.5, -55.75], [-38.75, -55.65], [-39.0, -55.75], [-39.25, -55.65], [-39.5, -55.75], [-39.75, -55.65], [-40.0, -55.75], [-40.25, -55.65], [-40.5, -55.75], [-41.03, -55.53], [-41.18, -55.18], [-41.53, -55.03], [-41.68, -54.68], [-42.03, -54.53], [-42.18, -54.18], [-42.25, -54.15], [-42.5, -54.25], [-42.75, -54.15], [-43.0, -54.25], [-43.53, -54.03], [-43.68, -53.68], [-44.03, -53.53], [-44.25, -53.0]]]]}, "2016-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.5, -53.25], [-36.97, -53.47], [-36.75, -54.0], [-36.97, -54.53], [-37.5, -54.75], [-38.03, -54.53], [-38.25, -54.0], [-38.03, -53.47], [-37.5, -53.25]]]]}, "2016-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.5, -53.25], [-36.97, -53.47], [-36.75, -54.0], [-36.97, -54.53], [-37.5, -54.75], [-38.03, -54.53], [-38.25, -54.0], [-38.03, -53.47], [-37.5, -53.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.7724505663196055}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.322737098794941}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-5.05297312316884, -5.6502904221268295, -3.7303687443174454, -6.032663083019827, -5.850993132395104]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-10.890586663191755, -12.576316678276271, -9.67040096209206, -6.032663083019827, -5.850993132395104]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.588037098307083, -5.1350757315682936, -3.2489986993739226, -4.238796998442126, -4.12586043290554]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.135643246679592, -7.7724505663196055, -4.874298457514101, -4.238796998442126, -4.12586043290554]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.337071409964517, -2.5726974506575977, -1.6325610726312632, -1.6253684452993085, -1.669604882732008]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.780670010905269, -2.7849810247996003, -1.8436050877924286, -1.6253684452993085, -1.669604882732008]}}