{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:31.991544", "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": "2021-Dec-19_to_2021-Dec-21_319.5_-19.5"}, "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": 2021120000635}, "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": "December 19 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 21 2021"}, "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": 143119.08270636655}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "S.E.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 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": -19.5}, "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": 319.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "319.5\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": 320.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.65, -18.75], [-43.75, -18.5], [-43.65, -18.25], 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"2021-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.65, -18.75], [-43.75, -18.5], [-43.65, -18.25], [-43.75, -18.0], [-43.53, -17.47], [-43.0, -17.25], [-42.75, -17.35], [-42.68, -17.32], [-42.53, -16.97], [-42.18, -16.82], [-42.03, -16.47], [-41.5, -16.25], [-41.25, -16.35], [-41.0, -16.25], [-40.47, -16.47], [-40.32, -16.82], [-40.25, -16.85], [-40.0, -16.75], [-39.47, -16.97], [-39.25, -17.5], [-39.35, -17.75], [-39.25, -18.0], [-39.35, -18.25], [-39.25, -18.5], [-39.35, -18.75], [-39.25, -19.0], [-39.35, -19.25], [-39.25, -19.5], [-39.35, -19.75], [-39.25, -20.0], [-39.47, -20.53], [-39.82, -20.68], [-39.97, -21.03], [-40.32, -21.18], [-40.47, -21.53], [-40.82, -21.68], [-40.97, -22.03], [-41.5, -22.25], [-41.75, -22.15], [-42.0, -22.25], [-42.53, -22.03], [-42.75, -21.5], [-42.65, -21.25], [-42.75, -21.0], [-42.65, -20.75], [-42.75, -20.5], [-42.65, -20.25], [-42.68, -20.18], [-42.75, -20.15], [-43.0, -20.25], [-43.53, -20.03], [-43.75, -19.5], [-43.65, -19.25], [-43.75, -19.0], [-43.65, -18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.725627690995736}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0904182478321696}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.019118053807233, 21.132311246299764, 22.019741862566377]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.292125113283475, 17.87438118086476, 19.269515011698047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.783846745208001, -3.687958055480502, -2.7994499428080055]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.9740647506122855, -4.725627690995736, -3.540434967750002]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.936443438240656, -2.5643597685450055, -1.9551428826012207]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4495170279382816, -3.175150064154939, -2.4806715627800644]}}