{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:06.323015", "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": "2019-Feb-14_to_2019-Feb-18_315.5_-21.5"}, "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": 2019020000475}, "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 14 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 18 2019"}, "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": 69693.51130675926}, "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": []}, "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": -21.5}, "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": 315.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "315.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 310.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 315.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -21.0], [-45.03, -20.47], [-44.5, -20.25], [-43.97, -20.47], [-43.75, -21.0], [-43.85, -21.25], [-43.75, -21.5], [-43.97, -22.03], [-44.32, -22.18], [-44.47, -22.53], [-45.0, -22.75], [-45.53, -22.53], [-45.75, -22.0], [-45.53, -21.47], [-45.18, -21.32], [-45.15, -21.25], [-45.25, -21.0]]]]}, "2019-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -21.0], [-45.15, -20.75], [-45.25, -20.5], [-45.03, -19.97], [-44.5, -19.75], [-43.97, -19.97], [-43.75, -20.5], [-43.85, -20.75], [-43.75, -21.0], [-43.85, -21.25], [-43.75, -21.5], [-43.97, -22.03], [-44.32, -22.18], [-44.47, -22.53], [-45.0, -22.75], [-45.53, -22.53], [-45.75, -22.0], [-45.53, -21.47], [-45.18, -21.32], [-45.15, -21.25], [-45.25, -21.0]]]]}, "2019-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.53, -17.97], [-49.0, -17.75], [-48.47, -17.97], [-48.32, -18.32], [-48.25, -18.35], [-48.18, -18.32], [-48.03, -17.97], [-47.5, -17.75], [-46.97, -17.97], [-46.82, -18.32], [-46.47, -18.47], [-46.32, -18.82], [-46.25, -18.85], [-46.0, -18.75], [-45.47, -18.97], [-45.32, -19.32], [-45.25, -19.35], [-45.0, -19.25], [-44.47, -19.47], [-44.32, -19.82], [-43.97, -19.97], [-43.75, -20.5], [-43.85, -20.75], [-43.75, -21.0], [-43.85, -21.25], [-43.75, -21.5], [-43.97, -22.03], [-44.32, -22.18], [-44.47, -22.53], [-45.0, -22.75], [-45.53, -22.53], [-45.75, -22.0], [-45.62, -21.7], [-46.03, -21.53], [-46.18, -21.18], [-46.25, -21.15], [-46.5, -21.25], [-46.75, -21.15], [-47.0, -21.25], [-47.53, -21.03], [-47.75, -20.5], [-47.65, -20.25], [-47.75, -20.0], [-47.62, -19.7], [-47.75, -19.65], [-48.0, -19.75], [-48.25, -19.65], [-48.5, -19.75], [-48.75, -19.65], [-49.0, -19.75], [-49.53, -19.53], [-49.75, -19.0], [-49.65, -18.75], [-49.75, -18.5], [-49.53, -17.97]]]]}, "2019-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.53, -17.97], [-49.0, -17.75], [-48.47, -17.97], [-48.32, -18.32], [-48.25, -18.35], [-48.18, -18.32], [-48.03, -17.97], [-47.5, -17.75], [-46.97, -17.97], [-46.82, -18.32], [-46.47, -18.47], [-46.32, -18.82], [-46.25, -18.85], [-46.0, -18.75], [-45.47, -18.97], [-45.32, -19.32], [-45.25, -19.35], [-45.0, -19.25], [-44.47, -19.47], [-44.32, -19.82], [-43.97, -19.97], [-43.75, -20.5], [-43.85, -20.75], [-43.75, -21.0], [-43.85, -21.25], [-43.75, -21.5], [-43.97, -22.03], [-44.32, -22.18], [-44.47, -22.53], [-45.0, -22.75], [-45.53, -22.53], [-45.75, -22.0], [-45.62, -21.7], [-46.03, -21.53], [-46.18, -21.18], [-46.25, -21.15], [-46.5, -21.25], [-46.75, -21.15], [-47.0, -21.25], [-47.53, -21.03], [-47.75, -20.5], [-47.65, -20.25], [-47.75, -20.0], [-47.62, -19.7], [-47.75, -19.65], [-48.0, -19.75], [-48.25, -19.65], [-48.5, -19.75], [-48.75, -19.65], [-49.0, -19.75], [-49.53, -19.53], [-49.75, -19.0], [-49.65, -18.75], [-49.75, -18.5], [-49.53, -17.97]]]]}, "2019-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.53, -17.97], [-49.0, -17.75], [-48.47, -17.97], [-48.32, -18.32], [-48.25, -18.35], [-48.18, -18.32], [-48.03, -17.97], [-47.5, -17.75], [-46.97, -17.97], [-46.82, -18.32], [-46.47, -18.47], [-46.32, -18.82], [-46.25, -18.85], [-46.0, -18.75], [-45.47, -18.97], [-45.32, -19.32], [-45.25, -19.35], [-45.0, -19.25], [-44.47, -19.47], [-44.32, -19.82], [-43.97, -19.97], [-43.75, -20.5], [-43.97, -21.03], [-44.32, -21.18], [-44.47, -21.53], [-45.0, -21.75], [-45.25, -21.65], [-45.5, -21.75], [-46.03, -21.53], [-46.18, -21.18], [-46.25, -21.15], [-46.5, -21.25], [-46.75, -21.15], [-47.0, -21.25], [-47.53, -21.03], [-47.75, -20.5], [-47.65, -20.25], [-47.75, -20.0], [-47.62, -19.7], [-47.75, -19.65], [-48.0, -19.75], [-48.25, -19.65], [-48.5, -19.75], [-48.75, -19.65], [-49.0, -19.75], [-49.53, -19.53], [-49.75, -19.0], [-49.65, -18.75], [-49.75, -18.5], [-49.53, -17.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0851144237382186}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1019445340938625}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.73279253295283, 20.267602807683772, 21.11580814868671, 21.02748051162081, 21.645209067556777]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.24366468848359, 19.85924460727182, 19.514651915326397, 19.749775089691695, 20.507581223810405]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3625589792149335, -1.9098758692136357, -2.1440205058979913, -2.28251963718211, -1.8468400353672276]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8735472013996173, -2.0045468715187553, -2.590835971698482, -3.0851144237382186, -2.361063827304349]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7262350368965393, -1.4153547844096814, -1.63306712560757, -1.8027358141578136, -1.4987051531660245]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.129165208080239, -1.4895934873321932, -2.0306915669093413, -2.2989416842301305, -1.90343080411932]}}