{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:56.435947", "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": "2011-Mar-13_to_2011-Mar-18_294.5_-27.5"}, "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": 2011030000741}, "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": "March 13 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 18 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 385690.6078230772}, "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", "Bolivia", "Paraguay"]}, "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": -27.5}, "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": 294.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "294.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, -26.97], [-66.18, -26.82], [-66.03, -26.47], [-65.68, -26.32], [-65.65, -26.25], [-65.68, -26.18], [-66.03, -26.03], [-66.25, -25.5], [-66.15, -25.25], [-66.25, -25.0], [-66.03, -24.47], [-65.68, -24.32], [-65.65, -24.25], [-65.75, -24.0], [-65.53, -23.47], [-65.18, -23.32], [-65.15, -23.25], [-65.25, -23.0], [-65.15, -22.75], [-65.25, -22.5], [-65.15, -22.25], [-65.25, -22.0], [-65.03, -21.47], [-64.68, -21.32], [-64.53, -20.97], [-64.0, -20.75], [-63.75, -20.85], [-63.68, -20.82], [-63.65, -20.75], [-63.75, -20.5], [-63.53, -19.97], [-63.0, -19.75], [-62.47, -19.97], [-62.32, -20.32], [-62.25, -20.35], [-62.0, -20.25], [-61.47, -20.47], [-61.32, -20.82], [-61.25, -20.85], [-61.0, -20.75], [-60.47, -20.97], [-60.25, -21.5], [-60.37, -21.8], [-59.97, -21.97], [-59.82, -22.32], [-59.47, -22.47], [-59.25, -23.0], [-59.35, -23.25], [-59.25, -23.5], [-59.35, -23.75], [-59.25, -24.0], [-59.35, -24.25], [-59.25, -24.5], [-59.35, -24.75], [-59.25, -25.0], [-59.46, -25.5], [-59.32, -25.82], [-58.97, -25.97], [-58.82, -26.32], [-58.47, -26.47], [-58.25, -27.0], [-58.35, -27.25], [-58.32, -27.32], [-57.97, -27.47], [-57.75, -28.0], [-57.85, -28.25], [-57.75, -28.5], [-57.97, -29.03], [-58.5, -29.25], [-58.75, -29.15], [-58.82, -29.18], [-58.97, -29.53], [-59.5, -29.75], [-59.75, -29.65], [-60.0, -29.75], [-60.53, -29.53], [-60.68, -29.18], [-60.75, -29.15], [-61.0, -29.25], [-61.53, -29.03], [-61.68, -28.68], [-62.03, -28.53], [-62.25, -28.0], [-62.15, -27.75], [-62.25, -27.5], [-62.03, -26.97], [-61.68, -26.82], [-61.65, -26.75], [-61.68, -26.68], [-62.0, -26.54], [-62.5, -26.75], [-62.75, -26.65], [-63.0, -26.75], [-63.25, -26.65], [-63.32, -26.68], [-63.35, -26.75], [-63.25, -27.0], [-63.35, -27.25], [-63.25, -27.5], [-63.47, -28.03], [-63.82, -28.18], [-63.97, -28.53], [-64.5, -28.75], [-64.75, -28.65], [-64.82, -28.68], [-64.97, -29.03], [-65.5, -29.25], [-66.03, -29.03], [-66.18, -28.68], [-66.53, -28.53], [-66.75, -28.0], [-66.65, -27.75], [-66.75, -27.5], [-66.53, -26.97]], [[-61.53, -22.97], [-61.18, -22.82], [-61.15, -22.75], [-61.25, -22.5], [-61.12, -22.2], [-61.25, -22.15], [-61.32, -22.18], [-61.47, -22.53], [-62.0, -22.75], [-62.25, -22.65], [-62.32, -22.68], [-62.35, -22.75], [-62.25, -23.0], [-62.35, -23.25], [-62.32, -23.32], [-62.25, -23.35], [-62.0, -23.25], [-61.75, -23.35], [-61.68, -23.32], [-61.53, -22.97]]]]}, "2011-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, -26.97], [-66.18, -26.82], [-66.03, -26.47], [-65.68, -26.32], [-65.65, -26.25], [-65.68, -26.18], [-66.03, -26.03], [-66.25, -25.5], [-66.15, -25.25], [-66.25, -25.0], [-66.03, -24.47], [-65.68, -24.32], [-65.65, -24.25], [-65.75, -24.0], [-65.53, -23.47], [-65.18, -23.32], [-65.15, -23.25], [-65.25, -23.0], [-65.15, -22.75], [-65.25, -22.5], [-65.15, -22.25], [-65.25, -22.0], [-65.03, -21.47], [-64.68, -21.32], [-64.53, -20.97], [-64.0, -20.75], [-63.75, -20.85], [-63.68, -20.82], [-63.65, -20.75], [-63.75, -20.5], [-63.53, -19.97], [-63.0, -19.75], [-62.47, -19.97], [-62.32, -20.32], [-62.25, -20.35], [-62.0, -20.25], [-61.47, -20.47], [-61.32, -20.82], [-61.25, -20.85], [-61.0, -20.75], [-60.47, -20.97], [-60.25, -21.5], [-60.37, -21.8], [-59.97, -21.97], [-59.82, -22.32], [-59.47, -22.47], [-59.25, -23.0], [-59.35, -23.25], [-59.25, -23.5], [-59.35, -23.75], [-59.25, -24.0], [-59.35, -24.25], [-59.25, -24.5], [-59.35, -24.75], [-59.25, -25.0], [-59.46, -25.5], [-59.32, -25.82], [-58.97, -25.97], [-58.82, -26.32], [-58.47, -26.47], [-58.25, -27.0], [-58.35, -27.25], [-58.32, -27.32], [-57.97, -27.47], [-57.75, -28.0], [-57.85, -28.25], [-57.75, -28.5], [-57.97, -29.03], [-58.5, -29.25], [-58.75, -29.15], [-58.82, -29.18], [-58.97, -29.53], [-59.5, -29.75], [-59.75, -29.65], [-60.0, -29.75], [-60.53, -29.53], [-60.68, -29.18], [-60.75, -29.15], [-61.0, -29.25], [-61.53, -29.03], [-61.68, -28.68], [-62.03, -28.53], [-62.25, -28.0], [-62.15, -27.75], [-62.25, -27.5], [-62.03, -26.97], [-61.68, -26.82], [-61.65, -26.75], [-61.68, -26.68], [-62.0, -26.54], [-62.5, -26.75], [-62.75, -26.65], [-63.0, -26.75], [-63.25, -26.65], [-63.32, -26.68], [-63.35, -26.75], [-63.25, -27.0], [-63.35, -27.25], [-63.25, -27.5], [-63.47, -28.03], [-63.82, -28.18], [-63.97, -28.53], [-64.5, -28.75], [-64.75, -28.65], [-64.82, -28.68], [-64.97, -29.03], [-65.5, -29.25], [-66.03, -29.03], [-66.18, -28.68], [-66.53, -28.53], [-66.75, -28.0], [-66.65, -27.75], [-66.75, -27.5], [-66.53, -26.97]], [[-61.53, -22.97], [-61.18, -22.82], [-61.15, -22.75], [-61.25, -22.5], [-61.12, -22.2], [-61.25, -22.15], [-61.32, -22.18], [-61.47, -22.53], [-62.0, -22.75], [-62.25, -22.65], [-62.32, -22.68], [-62.35, -22.75], [-62.25, -23.0], [-62.35, -23.25], [-62.32, -23.32], [-62.25, -23.35], [-62.0, -23.25], [-61.75, -23.35], [-61.68, -23.32], [-61.53, -22.97]]]]}, "2011-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, -26.97], [-66.18, -26.82], [-66.03, -26.47], [-65.68, -26.32], [-65.65, -26.25], [-65.68, -26.18], [-66.03, -26.03], [-66.25, -25.5], [-66.15, -25.25], [-66.25, -25.0], [-66.03, -24.47], [-65.68, -24.32], [-65.65, -24.25], [-65.75, -24.0], [-65.53, -23.47], [-65.18, -23.32], [-65.15, -23.25], [-65.25, -23.0], [-65.15, -22.75], [-65.25, -22.5], [-65.15, -22.25], [-65.25, -22.0], [-65.03, -21.47], [-64.68, -21.32], [-64.53, -20.97], [-64.0, -20.75], [-63.75, -20.85], [-63.68, -20.82], [-63.65, -20.75], [-63.75, -20.5], [-63.53, -19.97], [-63.0, -19.75], [-62.47, -19.97], [-62.32, -20.32], [-62.25, -20.35], [-62.0, -20.25], [-61.47, -20.47], [-61.32, -20.82], [-61.25, -20.85], [-61.0, -20.75], [-60.47, -20.97], [-60.25, -21.5], [-60.37, -21.8], [-59.97, -21.97], [-59.82, -22.32], [-59.47, -22.47], [-59.25, -23.0], [-59.35, -23.25], [-59.25, -23.5], [-59.35, -23.75], [-59.25, -24.0], [-59.35, -24.25], [-59.25, -24.5], [-59.35, -24.75], [-59.25, -25.0], [-59.46, -25.5], [-59.32, -25.82], [-58.97, -25.97], [-58.82, -26.32], [-58.47, -26.47], [-58.25, -27.0], [-58.35, -27.25], [-58.32, -27.32], [-57.97, -27.47], [-57.75, -28.0], [-57.85, -28.25], [-57.75, -28.5], [-57.97, -29.03], [-58.5, -29.25], [-58.75, -29.15], [-58.82, -29.18], [-58.97, -29.53], [-59.5, -29.75], [-59.75, -29.65], [-60.0, -29.75], [-60.53, -29.53], [-60.68, -29.18], [-60.75, -29.15], [-61.0, -29.25], [-61.53, -29.03], [-61.68, -28.68], [-62.03, -28.53], [-62.25, -28.0], [-62.15, -27.75], [-62.25, -27.5], [-62.03, -26.97], [-61.68, -26.82], [-61.65, -26.75], [-61.68, -26.68], [-62.0, -26.54], [-62.5, -26.75], [-62.75, -26.65], [-63.0, -26.75], [-63.25, -26.65], [-63.32, -26.68], [-63.35, -26.75], [-63.25, -27.0], [-63.35, -27.25], [-63.25, -27.5], [-63.47, -28.03], [-63.82, -28.18], [-63.97, -28.53], [-64.5, -28.75], [-64.75, -28.65], [-64.82, -28.68], [-64.97, -29.03], [-65.5, -29.25], [-66.03, -29.03], [-66.18, -28.68], [-66.53, -28.53], [-66.75, -28.0], [-66.65, -27.75], [-66.75, -27.5], [-66.53, -26.97]], [[-61.53, -22.97], [-61.18, -22.82], [-61.15, -22.75], [-61.25, -22.5], [-61.12, -22.2], [-61.25, -22.15], [-61.32, -22.18], [-61.47, -22.53], [-62.0, -22.75], [-62.25, -22.65], [-62.32, -22.68], [-62.35, -22.75], [-62.25, -23.0], [-62.35, -23.25], [-62.32, -23.32], [-62.25, -23.35], [-62.0, -23.25], [-61.75, -23.35], [-61.68, -23.32], [-61.53, -22.97]]]]}, "2011-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.03, -27.53], [-68.25, -27.0], [-68.03, -26.47], [-67.5, -26.25], [-67.25, -26.35], [-67.0, -26.25], [-66.75, -26.35], [-66.5, -26.25], [-66.0, -26.46], [-65.68, -26.32], [-65.65, -26.25], [-65.68, -26.18], [-66.03, -26.03], [-66.25, -25.5], [-66.15, -25.25], [-66.25, -25.0], [-66.03, -24.47], [-65.68, -24.32], [-65.65, -24.25], [-65.75, -24.0], [-65.53, -23.47], [-65.18, -23.32], [-65.03, -22.97], [-64.5, -22.75], [-63.97, -22.97], [-63.75, -23.5], [-63.85, -23.75], [-63.75, -24.0], [-63.85, -24.25], [-63.75, -24.5], [-63.85, -24.75], [-63.75, -25.0], [-63.85, -25.25], [-63.75, -25.5], [-63.85, -25.75], [-63.75, -26.0], [-63.85, -26.25], [-63.82, -26.32], [-63.47, -26.47], [-63.25, -27.0], [-63.35, -27.25], [-63.25, -27.5], [-63.47, -28.03], [-63.82, -28.18], [-63.97, -28.53], [-64.5, -28.75], [-64.75, -28.65], [-64.82, -28.68], [-64.97, -29.03], [-65.5, -29.25], [-66.03, -29.03], [-66.18, -28.68], [-66.53, -28.53], [-66.75, -28.0], [-66.65, -27.75], [-66.68, -27.68], [-66.75, -27.65], [-67.0, -27.75], [-67.25, -27.65], [-67.5, -27.75], [-68.03, -27.53]]]]}, "2011-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.03, -27.53], [-68.25, -27.0], [-68.03, -26.47], [-67.5, -26.25], [-67.25, -26.35], [-67.0, -26.25], [-66.75, -26.35], [-66.5, -26.25], [-65.97, -26.47], [-65.8, -26.88], [-65.5, -26.75], [-65.25, -26.85], [-65.18, -26.82], [-65.15, -26.75], [-65.25, -26.5], [-65.15, -26.25], [-65.25, -26.0], [-65.15, -25.75], [-65.25, -25.5], [-65.03, -24.97], [-64.5, -24.75], [-63.97, -24.97], [-63.75, -25.5], [-63.85, -25.75], [-63.75, -26.0], [-63.85, -26.25], [-63.82, -26.32], [-63.47, -26.47], [-63.25, -27.0], [-63.35, -27.25], [-63.25, -27.5], [-63.47, -28.03], [-63.82, -28.18], [-63.97, -28.53], [-64.5, -28.75], [-64.75, -28.65], [-65.0, -28.75], [-65.53, -28.53], [-65.68, -28.18], [-66.03, -28.03], [-66.2, -27.62], [-66.5, -27.75], [-66.75, -27.65], [-67.0, -27.75], [-67.25, -27.65], [-67.5, -27.75], [-68.03, -27.53]]]]}, "2011-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.03, -27.53], [-68.25, -27.0], [-68.03, -26.47], [-67.5, -26.25], [-67.25, -26.35], [-67.0, -26.25], [-66.75, -26.35], [-66.5, -26.25], [-65.97, -26.47], [-65.75, -27.0], [-65.97, -27.53], [-66.5, -27.75], [-66.75, -27.65], [-67.0, -27.75], [-67.25, -27.65], [-67.5, -27.75], [-68.03, -27.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.360473917346383}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.415660469771122}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.068516384457325, 17.578248636642627, 20.345284015846858, 16.445873355443496, 17.590643720930814, 8.299482944534873]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.614955724026515, 9.743263879579445, 11.510230197176725, 6.367919013553319, 6.3350331460040366, 6.254765666656851]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.6011565128886485, -7.019064908477885, -4.161037820941827, -4.19923906155792, -3.611843357977652, -2.766132860974267]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.865237935538289, -8.360473917346383, -5.551494316948208, -4.701232052363309, -4.391683973797569, -3.1894842343950813]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8513614365781348, -2.389471728954692, -1.4550481342435881, -1.7091489706018228, -1.3703423811701947, -1.507584933803119]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4057876906226463, -2.9782005482323575, -2.511351727069396, -2.1155515074847466, -1.7216524148612715, -1.772610995386169]}}