{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:03.990678", "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-Dec-05_to_2011-Dec-09_324.5_-7.5"}, "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": 2011120000353}, "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 05 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 09 2011"}, "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": 55225.40743002073}, "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"]}, "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": -7.5}, "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": 324.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "324.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 322.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 325.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.75, -7.0], [-37.53, -6.47], [-37.18, -6.32], [-37.03, -5.97], [-36.68, -5.82], [-36.65, -5.75], [-36.75, -5.5], [-36.53, -4.97], [-36.0, -4.75], [-35.75, -4.85], [-35.5, -4.75], [-34.97, -4.97], [-34.75, -5.5], [-34.85, -5.75], [-34.75, -6.0], [-34.85, -6.25], [-34.75, -6.5], [-34.85, -6.75], [-34.82, -6.82], [-34.47, -6.97], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.47, -8.53], [-35.0, -8.75], [-35.25, -8.65], [-35.32, -8.68], [-35.47, -9.03], [-36.0, -9.25], [-36.53, -9.03], [-36.75, -8.5], [-36.62, -8.2], [-37.03, -8.03], [-37.18, -7.68], [-37.53, -7.53], [-37.75, -7.0]]]]}, "2011-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.75, -7.0], [-37.53, -6.47], [-37.18, -6.32], [-37.03, -5.97], [-36.68, -5.82], [-36.65, -5.75], [-36.75, -5.5], [-36.53, -4.97], [-36.0, -4.75], [-35.75, -4.85], [-35.5, -4.75], [-34.97, -4.97], [-34.75, -5.5], [-34.85, -5.75], [-34.75, -6.0], [-34.85, -6.25], [-34.75, -6.5], [-34.85, -6.75], [-34.82, -6.82], [-34.47, -6.97], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.47, -8.53], [-35.0, -8.75], [-35.25, -8.65], [-35.32, -8.68], [-35.47, -9.03], [-36.0, -9.25], [-36.53, -9.03], [-36.75, -8.5], [-36.62, -8.2], [-37.03, -8.03], [-37.18, -7.68], [-37.53, -7.53], [-37.75, -7.0]]]]}, "2011-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.75, -7.0], [-37.53, -6.47], [-37.18, -6.32], [-37.03, -5.97], [-36.68, -5.82], [-36.65, -5.75], [-36.75, -5.5], [-36.53, -4.97], [-36.0, -4.75], [-35.75, -4.85], [-35.5, -4.75], [-34.97, -4.97], [-34.75, -5.5], [-34.85, -5.75], [-34.75, -6.0], [-34.85, -6.25], [-34.75, -6.5], [-34.85, -6.75], [-34.82, -6.82], [-34.47, -6.97], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.47, -8.53], [-35.0, -8.75], [-35.25, -8.65], [-35.32, -8.68], [-35.47, -9.03], [-36.0, -9.25], [-36.53, -9.03], [-36.75, -8.5], [-36.62, -8.2], [-37.03, -8.03], [-37.18, -7.68], [-37.53, -7.53], [-37.75, -7.0]]]]}, "2011-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -6.5], [-37.03, -5.97], [-36.68, -5.82], [-36.53, -5.47], [-36.0, -5.25], [-35.75, -5.35], [-35.5, -5.25], [-34.97, -5.47], [-34.75, -6.0], [-34.85, -6.25], [-34.75, -6.5], [-34.85, -6.75], [-34.82, -6.82], [-34.47, -6.97], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.47, -8.53], [-35.0, -8.75], [-35.25, -8.65], [-35.5, -8.75], [-36.03, -8.53], [-36.18, -8.18], [-36.53, -8.03], [-36.75, -7.5], [-36.65, -7.25], [-36.68, -7.18], [-37.03, -7.03], [-37.25, -6.5]]]]}, "2011-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-35.5, -6.75], [-34.97, -6.97], [-34.75, -7.5], [-34.97, -8.03], [-35.5, -8.25], [-36.03, -8.03], [-36.25, -7.5], [-36.03, -6.97], [-35.5, -6.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.6378154705832912}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1092058671244631}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.204632000975153, 25.314381043866206, 25.431313281912708, 25.17552136038256, 25.327189725726896]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.927308515274433, 23.13426781917468, 23.134892444840432, 23.67227872589342, 25.327189725726896]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1947570726915002, -1.0996445178008178, -0.9974972550712001, -1.1901519121885873, -0.7807909309326533]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5163588215281152, -1.2822288412730245, -1.2143352192109091, -1.6378154705832912, -0.7807909309326533]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8839784680144949, -1.7524176647847176, -1.6005433132667073, -1.9879053826523645, -1.269781970323812]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2779652573179296, -2.488159967615189, -1.9200309620490594, -2.657189918793122, -1.269781970323812]}}