{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:58.523984", "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": "2020-Nov-09_to_2020-Nov-15_312.0_-2.0"}, "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": 2020110000350}, "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": "November 09 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 15 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 315137.1952206412}, "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", "French Guiana"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "N.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": -2.0}, "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": 312.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "312.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.53, -2.03], [-52.75, -1.5], [-52.53, -0.97], [-52.0, -0.75], [-51.5, -0.96], [-51.0, -0.75], [-50.47, -0.97], [-50.3, -1.38], [-50.0, -1.25], [-49.75, -1.35], [-49.5, -1.25], [-48.97, -1.47], [-48.8, -1.88], [-48.5, -1.75], [-47.97, -1.97], [-47.82, -2.32], [-47.75, -2.35], [-47.5, -2.25], [-46.97, -2.47], [-46.75, -3.0], [-46.97, -3.53], [-47.5, -3.75], [-47.75, -3.65], [-47.82, -3.68], [-47.97, -4.03], [-48.5, -4.25], [-49.03, -4.03], [-49.18, -3.68], [-49.53, -3.53], [-49.75, -3.0], [-49.62, -2.7], [-49.75, -2.65], [-50.0, -2.75], [-50.53, -2.53], [-50.7, -2.12], [-51.0, -2.25], [-51.5, -2.04], [-52.0, -2.25], [-52.53, -2.03]]]]}, "2020-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.75, 2.0], [-54.53, 2.53], [-54.0, 2.75], [-53.75, 2.65], [-53.68, 2.68], [-53.53, 3.03], [-53.0, 3.25], [-52.47, 3.03], [-52.32, 2.68], [-51.97, 2.53], [-51.75, 2.0], [-51.85, 1.75], [-51.75, 1.5], [-51.97, 0.97], [-52.32, 0.82], [-52.35, 0.75], [-52.32, 0.68], [-51.97, 0.53], [-51.75, 0.0], [-51.85, -0.25], [-51.82, -0.32], [-51.47, -0.47], [-51.32, -0.82], [-51.25, -0.85], [-51.18, -0.82], [-51.15, -0.75], [-51.25, -0.5], [-51.15, -0.25], [-51.25, 0.0], [-51.03, 0.53], [-50.5, 0.75], [-50.25, 0.65], [-50.0, 0.75], [-49.75, 0.65], [-49.5, 0.75], [-48.97, 0.53], [-48.82, 0.18], [-48.47, 0.03], [-48.3, -0.38], [-48.0, -0.25], [-47.75, -0.35], [-47.5, -0.25], [-46.97, -0.47], [-46.82, -0.82], [-46.75, -0.85], [-46.5, -0.75], [-45.97, -0.97], [-45.82, -1.32], [-45.75, -1.35], [-45.5, -1.25], [-44.97, -1.47], [-44.75, -2.0], [-44.85, -2.25], [-44.75, -2.5], [-44.97, -3.03], [-45.5, -3.25], [-45.75, -3.15], [-45.82, -3.18], [-45.97, -3.53], [-46.32, -3.68], [-46.47, -4.03], [-47.0, -4.25], [-47.25, -4.15], [-47.5, -4.25], [-47.75, -4.15], [-48.0, -4.25], [-48.25, -4.15], [-48.5, -4.25], [-49.03, -4.03], [-49.18, -3.68], [-49.53, -3.53], [-49.75, -3.0], [-49.65, -2.75], [-49.68, -2.68], [-49.75, -2.65], [-50.0, -2.75], [-50.25, -2.65], [-50.5, -2.75], [-50.75, -2.65], [-51.0, -2.75], [-51.25, -2.65], [-51.5, -2.75], [-51.75, -2.65], [-52.0, -2.75], [-52.53, -2.53], [-52.68, -2.18], [-52.75, -2.15], [-53.0, -2.25], [-53.53, -2.03], [-53.75, -1.5], [-53.65, -1.25], [-53.75, -1.0], [-53.53, -0.47], [-53.18, -0.32], [-53.15, -0.25], [-53.18, -0.18], [-53.25, -0.15], [-53.5, -0.25], [-54.03, -0.03], [-54.18, 0.32], [-54.25, 0.35], [-54.5, 0.25], [-55.03, 0.47], [-55.25, 1.0], [-55.03, 1.53], [-54.68, 1.68], [-54.65, 1.75], [-54.75, 2.0]]]]}, "2020-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, 2.03], [-56.18, 2.18], [-56.03, 2.53], [-55.5, 2.75], [-55.25, 2.65], [-55.0, 2.75], [-54.5, 2.54], [-54.0, 2.75], [-53.75, 2.65], [-53.68, 2.68], [-53.53, 3.03], [-53.0, 3.25], [-52.47, 3.03], [-52.32, 2.68], [-51.97, 2.53], [-51.75, 2.0], [-51.85, 1.75], [-51.75, 1.5], [-51.85, 1.25], [-51.82, 1.18], [-51.75, 1.15], [-51.5, 1.25], [-50.97, 1.03], [-50.8, 0.62], [-50.5, 0.75], [-50.25, 0.65], [-50.0, 0.75], [-49.75, 0.65], [-49.5, 0.75], [-48.97, 0.53], [-48.82, 0.18], [-48.47, 0.03], [-48.3, -0.38], [-48.0, -0.25], [-47.75, -0.35], [-47.5, -0.25], [-46.97, -0.47], [-46.82, -0.82], [-46.75, -0.85], [-46.5, -0.75], [-45.97, -0.97], [-45.82, -1.32], [-45.75, -1.35], [-45.5, -1.25], [-44.97, -1.47], [-44.75, -2.0], [-44.85, -2.25], [-44.75, -2.5], [-44.85, -2.75], [-44.75, -3.0], [-44.97, -3.53], [-45.5, -3.75], [-46.0, -3.54], [-46.32, -3.68], [-46.47, -4.03], [-47.0, -4.25], [-47.25, -4.15], [-47.5, -4.25], [-47.75, -4.15], [-48.0, -4.25], [-48.25, -4.15], [-48.5, -4.25], [-49.03, -4.03], [-49.18, -3.68], [-49.53, -3.53], [-49.75, -3.0], [-49.65, -2.75], [-49.68, -2.68], [-49.75, -2.65], [-50.0, -2.75], [-50.25, -2.65], [-50.5, -2.75], [-50.75, -2.65], [-51.0, -2.75], [-51.25, -2.65], [-51.5, -2.75], [-51.75, -2.65], [-52.0, -2.75], [-52.53, -2.53], [-52.68, -2.18], [-52.75, -2.15], [-53.0, -2.25], [-53.53, -2.03], [-53.75, -1.5], [-53.65, -1.25], [-53.75, -1.0], [-53.65, -0.75], [-53.75, -0.5], [-53.65, -0.25], [-53.68, -0.18], [-53.75, -0.15], [-54.0, -0.25], [-54.25, -0.15], [-54.5, -0.25], [-54.75, -0.15], [-55.0, -0.25], [-55.25, -0.15], [-55.5, -0.25], [-56.03, -0.03], [-56.18, 0.32], [-56.53, 0.47], [-56.75, 1.0], [-56.65, 1.25], [-56.75, 1.5], [-56.53, 2.03]], [[-51.18, -0.82], [-51.15, -0.75], [-51.25, -0.5], [-51.15, -0.25], [-51.2, -0.12], [-51.32, -0.18], [-51.46, -0.5], [-51.32, -0.82], [-51.25, -0.85], [-51.18, -0.82]]]]}, "2020-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, 2.03], [-56.18, 2.18], [-56.03, 2.53], [-55.5, 2.75], [-55.25, 2.65], [-55.0, 2.75], [-54.5, 2.54], [-54.0, 2.75], [-53.75, 2.65], [-53.68, 2.68], [-53.53, 3.03], [-53.0, 3.25], [-52.47, 3.03], [-52.32, 2.68], [-51.97, 2.53], [-51.75, 2.0], [-51.85, 1.75], [-51.82, 1.68], [-51.75, 1.65], [-51.5, 1.75], [-50.97, 1.53], [-50.75, 1.0], [-50.85, 0.75], [-50.8, 0.62], [-50.5, 0.75], [-50.25, 0.65], [-50.0, 0.75], [-49.75, 0.65], [-49.5, 0.75], [-48.97, 0.53], [-48.82, 0.18], [-48.47, 0.03], [-48.3, -0.38], [-48.0, -0.25], [-47.75, -0.35], [-47.5, -0.25], [-46.97, -0.47], [-46.82, -0.82], [-46.75, -0.85], [-46.5, -0.75], [-45.97, -0.97], [-45.82, -1.32], [-45.75, -1.35], [-45.5, -1.25], [-44.97, -1.47], [-44.75, -2.0], [-44.85, -2.25], [-44.75, -2.5], [-44.85, -2.75], [-44.75, -3.0], [-44.97, -3.53], [-45.5, -3.75], [-46.0, -3.54], [-46.32, -3.68], [-46.47, -4.03], [-47.0, -4.25], [-47.25, -4.15], [-47.5, -4.25], [-47.75, -4.15], [-48.0, -4.25], [-48.53, -4.03], [-48.68, -3.68], [-49.03, -3.53], [-49.18, -3.18], [-49.53, -3.03], [-49.68, -2.68], [-49.75, -2.65], [-50.0, -2.75], [-50.25, -2.65], [-50.5, -2.75], [-50.75, -2.65], [-51.0, -2.75], [-51.25, -2.65], [-51.5, -2.75], [-51.75, -2.65], [-52.0, -2.75], [-52.53, -2.53], [-52.68, -2.18], [-52.75, -2.15], [-53.0, -2.25], [-53.53, -2.03], [-53.75, -1.5], [-53.65, -1.25], [-53.75, -1.0], [-53.65, -0.75], [-53.75, -0.5], [-53.65, -0.25], [-53.68, -0.18], [-53.75, -0.15], [-54.0, -0.25], [-54.25, -0.15], [-54.5, -0.25], [-54.75, -0.15], [-55.0, -0.25], [-55.25, -0.15], [-55.5, -0.25], [-56.03, -0.03], [-56.18, 0.32], [-56.53, 0.47], [-56.75, 1.0], [-56.65, 1.25], [-56.75, 1.5], [-56.53, 2.03]], [[-51.18, -0.82], [-51.15, -0.75], [-51.25, -0.5], [-51.15, -0.25], [-51.2, -0.12], [-51.32, -0.18], [-51.46, -0.5], [-51.32, -0.82], [-51.25, -0.85], [-51.18, -0.82]]]]}, "2020-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.68, -1.32], [-48.53, -0.97], [-48.0, -0.75], [-47.75, -0.85], [-47.5, -0.75], [-46.97, -0.97], [-46.82, -1.32], [-46.47, -1.47], [-46.32, -1.82], [-46.25, -1.85], [-46.0, -1.75], [-45.47, -1.97], [-45.32, -2.32], [-44.97, -2.47], [-44.75, -3.0], [-44.97, -3.53], [-45.5, -3.75], [-46.03, -3.53], [-46.18, -3.18], [-46.25, -3.15], [-46.5, -3.25], [-46.93, -3.07], [-46.75, -3.5], [-46.97, -4.03], [-47.5, -4.25], [-48.03, -4.03], [-48.25, -3.5], [-48.12, -3.2], [-48.25, -3.15], [-48.5, -3.25], [-49.03, -3.03], [-49.25, -2.5], [-49.15, -2.25], [-49.25, -2.0], [-49.03, -1.47], [-48.68, -1.32]], [[-47.25, -2.65], [-47.32, -2.68], [-47.37, -2.8], [-47.07, -2.93], [-47.18, -2.68], [-47.25, -2.65]]], [[[-56.18, 2.18], [-56.03, 2.53], [-55.5, 2.75], [-55.25, 2.65], [-55.0, 2.75], [-54.47, 2.53], [-54.32, 2.18], [-54.25, 2.15], [-54.18, 2.18], [-54.03, 2.53], [-53.68, 2.68], [-53.53, 3.03], [-53.0, 3.25], [-52.75, 3.15], [-52.5, 3.25], [-51.97, 3.03], [-51.75, 2.5], [-51.85, 2.25], [-51.75, 2.0], [-51.85, 1.75], [-51.82, 1.68], [-51.75, 1.65], [-51.5, 1.75], [-50.97, 1.53], [-50.75, 1.0], [-50.85, 0.75], [-50.75, 0.5], [-50.97, -0.03], [-51.32, -0.18], [-51.47, -0.53], [-51.82, -0.68], [-51.85, -0.75], [-51.75, -1.0], [-51.97, -1.53], [-52.5, -1.75], [-52.75, -1.65], [-53.0, -1.75], [-53.53, -1.53], [-53.75, -1.0], [-53.65, -0.75], [-53.75, -0.5], [-53.65, -0.25], [-53.68, -0.18], [-53.75, -0.15], [-54.0, -0.25], [-54.25, -0.15], [-54.5, -0.25], [-54.75, -0.15], [-55.0, -0.25], [-55.25, -0.15], [-55.5, -0.25], [-56.03, -0.03], [-56.18, 0.32], [-56.53, 0.47], [-56.75, 1.0], [-56.65, 1.25], [-56.75, 1.5], [-56.53, 2.03], [-56.18, 2.18]]]]}, "2020-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.5, -1.25], [-48.25, -1.35], [-48.0, -1.25], [-47.75, -1.35], [-47.5, -1.25], [-46.97, -1.47], [-46.75, -2.0], [-46.97, -2.53], [-47.32, -2.68], [-47.47, -3.03], [-48.0, -3.25], [-48.25, -3.15], [-48.5, -3.25], [-49.03, -3.03], [-49.25, -2.5], [-49.15, -2.25], [-49.25, -2.0], [-49.03, -1.47], [-48.5, -1.25]]], [[[-56.03, 2.53], [-55.5, 2.75], [-55.25, 2.65], [-55.0, 2.75], [-54.47, 2.53], [-54.32, 2.18], [-54.25, 2.15], [-54.18, 2.18], [-54.03, 2.53], [-53.68, 2.68], [-53.53, 3.03], [-53.0, 3.25], [-52.75, 3.15], [-52.5, 3.25], [-51.97, 3.03], [-51.75, 2.5], [-51.85, 2.25], [-51.75, 2.0], [-51.85, 1.75], [-51.82, 1.68], [-51.75, 1.65], [-51.5, 1.75], [-50.97, 1.53], [-50.75, 1.0], [-50.85, 0.75], [-50.75, 0.5], [-50.97, -0.03], [-51.32, -0.18], [-51.47, -0.53], [-51.82, -0.68], [-51.85, -0.75], [-51.75, -1.0], [-51.97, -1.53], [-52.5, -1.75], [-53.03, -1.53], [-53.18, -1.18], [-53.53, -1.03], [-53.75, -0.5], [-53.65, -0.25], [-53.68, -0.18], [-53.75, -0.15], [-54.0, -0.25], [-54.5, -0.04], [-55.0, -0.25], [-55.53, -0.03], [-55.75, 0.5], [-55.65, 0.75], [-55.75, 1.0], [-55.65, 1.25], [-55.68, 1.32], [-56.03, 1.47], [-56.25, 2.0], [-56.03, 2.53]]]]}, "2020-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.0, 3.25], [-52.75, 3.15], [-52.5, 3.25], [-51.97, 3.03], [-51.75, 2.5], [-51.85, 2.25], [-51.75, 2.0], [-51.97, 1.47], [-52.5, 1.25], [-52.75, 1.35], [-53.0, 1.25], [-53.25, 1.35], [-53.5, 1.25], [-54.03, 1.47], [-54.25, 2.0], [-54.03, 2.53], [-53.68, 2.68], [-53.53, 3.03], [-53.0, 3.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.970751685658797}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.955414980702884}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.12380505231397, 26.470858370104793, 25.564604625677134, 26.215372268403712, 26.0671754688438, 25.612388028075145, 25.86503783614046]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.40764605856026, 25.641245313058675, 23.751163150830337, 24.52079964580713, 24.51594602159429, 24.42709773391988, 25.536892392482002]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4147543938415084, -1.6993524609321278, -2.4590055986414683, -1.7975742438145832, -1.697639287683835, -2.11548229476305, -1.669018479736701]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7217684770840833, -2.58968215318464, -3.970751685658797, -2.8110424246804087, -2.3501339597405035, -3.1646031614330354, -1.7847154212354326]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.413670708837366, -1.9973702381539127, -2.8352658541547804, -1.9753852071804294, -1.5747244487419065, -1.91305397618301, -1.535820447307853]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5580354786262134, -3.210987759601819, -5.405084965832521, -2.9184189332320565, -2.017117019325208, -2.827118334059063, -1.606662791973339]}}