{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:21:02.086301", "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-Dec-21_to_2019-Dec-23_302.5_-31.5"}, "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": 2019120000544}, "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 21 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 23 2019"}, "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": 265592.6266241431}, "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": ["Argentina", "Brazil", "Paraguay", "Uruguay"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": -31.5}, "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": 302.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "302.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 304.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, -29.53], [-62.25, -29.0], [-62.03, -28.47], [-61.5, -28.25], [-61.25, -28.35], [-61.18, -28.32], [-61.03, -27.97], [-60.5, -27.75], [-60.25, -27.85], [-60.0, -27.75], [-59.5, -27.96], [-59.18, -27.82], [-59.15, -27.75], [-59.25, -27.5], [-59.04, -27.0], [-59.25, -26.5], [-59.03, -25.97], [-58.5, -25.75], [-58.25, -25.85], [-58.0, -25.75], [-57.47, -25.97], [-57.32, -26.32], [-57.25, -26.35], [-57.0, -26.25], [-56.75, -26.35], [-56.5, -26.25], [-56.25, -26.35], [-56.0, -26.25], [-55.47, -26.47], [-55.25, -27.0], [-55.35, -27.25], [-55.25, -27.5], [-55.35, -27.75], [-55.32, -27.82], [-54.97, -27.97], [-54.75, -28.5], [-54.85, -28.75], [-54.75, -29.0], [-54.97, -29.53], [-55.32, -29.68], [-55.46, -30.0], [-55.25, -30.5], [-55.35, -30.75], [-55.32, -30.82], [-54.97, -30.97], [-54.75, -31.5], [-54.97, -32.03], [-55.5, -32.25], [-55.8, -32.12], [-55.97, -32.53], [-56.5, -32.75], [-56.75, -32.65], [-56.82, -32.68], [-56.97, -33.03], [-57.5, -33.25], [-57.75, -33.15], [-58.0, -33.25], [-58.25, -33.15], [-58.5, -33.25], [-58.75, -33.15], [-59.0, -33.25], [-59.53, -33.03], [-59.68, -32.68], [-60.03, -32.53], [-60.18, -32.18], [-60.53, -32.03], [-60.68, -31.68], [-61.03, -31.53], [-61.25, -31.0], [-61.15, -30.75], [-61.25, -30.5], [-61.15, -30.25], [-61.25, -30.0], [-61.15, -29.75], [-61.18, -29.68], [-61.25, -29.65], [-61.5, -29.75], [-62.03, -29.53]]]]}, "2019-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, -29.53], [-62.25, -29.0], [-62.03, -28.47], [-61.5, -28.25], [-61.25, -28.35], [-61.18, -28.32], [-61.03, -27.97], [-60.5, -27.75], [-60.25, -27.85], [-60.0, -27.75], [-59.5, -27.96], [-59.18, -27.82], [-59.15, -27.75], [-59.25, -27.5], [-59.04, -27.0], [-59.25, -26.5], [-59.03, -25.97], [-58.5, -25.75], [-58.25, -25.85], [-58.0, -25.75], [-57.47, -25.97], [-57.32, -26.32], [-57.25, -26.35], [-57.0, -26.25], [-56.75, -26.35], [-56.5, -26.25], [-56.25, -26.35], [-56.0, -26.25], [-55.47, -26.47], [-55.25, -27.0], [-55.35, -27.25], [-55.25, -27.5], [-55.35, -27.75], [-55.32, -27.82], [-54.97, 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[-60.53, -32.03], [-60.68, -31.68], [-61.03, -31.53], [-61.25, -31.0], [-61.15, -30.75], [-61.25, -30.5], [-61.15, -30.25], [-61.25, -30.0], [-61.15, -29.75], [-61.18, -29.68], [-61.25, -29.65], [-61.5, -29.75], [-62.03, -29.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.443476941930044}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.690533649493098}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.484570040473784, 19.834448629975554, 21.004981186899613]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.49200221318864, 16.921824665038628, 19.234647507323928]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.518817782343524, -5.291424547741296, -4.261358618394482]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.693785506437848, -6.443476941930044, -5.27006573505588]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6943964212567464, -1.990159384762152, -1.560130784850009]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0717448008076427, -2.4209664317956268, -1.8887109568381948]}}