{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:43.991618", "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": "2022-Jul-29_to_2022-Aug-02_304.5_-0.5"}, "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": 2022070001142}, "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": "July 29 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 02 2022"}, "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": 132800.21206970917}, "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", "Suriname"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": []}, "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": -0.5}, "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": 304.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "304.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 302.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.75, 3.5], [-57.53, 4.03], [-57.0, 4.25], [-56.75, 4.15], [-56.5, 4.25], [-56.25, 4.15], [-56.18, 4.18], [-56.15, 4.25], [-56.25, 4.5], [-56.03, 5.03], [-55.5, 5.25], [-54.97, 5.03], [-54.82, 4.68], [-54.75, 4.65], [-54.5, 4.75], [-53.97, 4.53], [-53.75, 4.0], [-53.85, 3.75], [-53.75, 3.5], [-53.96, 3.0], [-53.75, 2.5], [-53.85, 2.25], [-53.75, 2.0], [-53.85, 1.75], [-53.75, 1.5], [-53.97, 0.97], [-54.32, 0.82], [-54.35, 0.75], [-54.25, 0.5], [-54.35, 0.25], [-54.25, 0.0], [-54.35, -0.25], [-54.25, -0.5], [-54.47, -1.03], [-55.0, -1.25], [-55.25, -1.15], [-55.5, -1.25], [-56.03, -1.03], [-56.18, -0.68], [-56.53, -0.53], [-56.68, -0.18], [-57.03, -0.03], [-57.25, 0.5], [-57.15, 0.75], [-57.25, 1.0], [-57.15, 1.25], [-57.25, 1.5], [-57.15, 1.75], [-57.25, 2.0], [-57.15, 2.25], [-57.25, 2.5], [-57.15, 2.75], [-57.18, 2.82], [-57.53, 2.97], [-57.75, 3.5]]]]}, "2022-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.75, 3.5], [-57.53, 4.03], [-57.0, 4.25], [-56.75, 4.15], [-56.5, 4.25], [-56.25, 4.15], [-56.18, 4.18], [-56.15, 4.25], [-56.25, 4.5], [-56.03, 5.03], [-55.5, 5.25], [-54.97, 5.03], [-54.82, 4.68], [-54.75, 4.65], [-54.5, 4.75], [-53.97, 4.53], [-53.75, 4.0], [-53.85, 3.75], [-53.75, 3.5], [-53.96, 3.0], [-53.75, 2.5], [-53.85, 2.25], [-53.75, 2.0], [-53.85, 1.75], [-53.75, 1.5], [-53.97, 0.97], [-54.32, 0.82], [-54.35, 0.75], [-54.25, 0.5], [-54.35, 0.25], [-54.25, 0.0], [-54.35, -0.25], [-54.25, -0.5], [-54.47, -1.03], [-55.0, -1.25], [-55.25, -1.15], [-55.5, -1.25], [-56.03, -1.03], [-56.18, -0.68], [-56.53, -0.53], [-56.68, -0.18], [-57.03, -0.03], [-57.25, 0.5], [-57.15, 0.75], [-57.25, 1.0], [-57.15, 1.25], [-57.25, 1.5], [-57.15, 1.75], [-57.25, 2.0], [-57.15, 2.25], [-57.25, 2.5], [-57.15, 2.75], [-57.18, 2.82], [-57.53, 2.97], [-57.75, 3.5]]]]}, "2022-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.75, 3.5], [-57.53, 4.03], [-57.0, 4.25], [-56.75, 4.15], [-56.5, 4.25], [-56.25, 4.15], [-56.18, 4.18], [-56.15, 4.25], [-56.25, 4.5], [-56.03, 5.03], [-55.5, 5.25], [-54.97, 5.03], [-54.82, 4.68], [-54.75, 4.65], [-54.5, 4.75], [-53.97, 4.53], [-53.75, 4.0], [-53.85, 3.75], [-53.75, 3.5], [-53.96, 3.0], [-53.75, 2.5], [-53.85, 2.25], [-53.75, 2.0], [-53.85, 1.75], [-53.75, 1.5], [-53.97, 0.97], [-54.32, 0.82], [-54.35, 0.75], [-54.25, 0.5], [-54.35, 0.25], [-54.25, 0.0], [-54.35, -0.25], [-54.32, -0.32], [-53.97, -0.47], [-53.75, -1.0], [-53.97, -1.53], [-54.5, -1.75], [-55.03, -1.53], [-55.18, -1.18], [-55.25, -1.15], [-55.5, -1.25], [-56.03, -1.03], [-56.18, -0.68], [-56.53, -0.53], [-56.68, -0.18], [-57.03, -0.03], [-57.25, 0.5], [-57.15, 0.75], [-57.25, 1.0], [-57.15, 1.25], [-57.25, 1.5], [-57.15, 1.75], [-57.25, 2.0], [-57.15, 2.25], [-57.25, 2.5], [-57.15, 2.75], [-57.18, 2.82], [-57.53, 2.97], [-57.75, 3.5]]]]}, "2022-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.03, 0.53], [-55.5, 0.75], [-54.97, 0.53], [-54.82, 0.18], [-54.47, 0.03], [-54.32, -0.32], [-53.97, -0.47], [-53.75, -1.0], [-53.97, -1.53], [-54.5, -1.75], [-55.03, -1.53], [-55.18, -1.18], [-55.25, -1.15], [-55.5, -1.25], [-56.03, -1.03], [-56.25, -0.5], [-56.15, -0.25], [-56.25, 0.0], [-56.03, 0.53]]]]}, "2022-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.03, -1.03], [-56.25, -0.5], [-56.03, 0.03], [-55.5, 0.25], [-55.25, 0.15], [-55.0, 0.25], [-54.47, 0.03], [-54.32, -0.32], [-53.97, -0.47], [-53.75, -1.0], [-53.97, -1.53], [-54.5, -1.75], [-55.03, -1.53], [-55.18, -1.18], [-55.25, -1.15], [-55.5, -1.25], [-56.03, -1.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.441029805224275}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5866899160898364}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.45231052809129, 23.251319224097017, 23.720903186177623, 23.620641577819924, 23.636809036555064]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.526425104981115, 22.384910406936456, 22.969487408173393, 23.32445150763664, 23.345989567982542]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6106418976213626, -1.8319423380145199, -1.3818121607890432, -1.2486561224871906, -1.2051211518178018]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2193536452402896, -2.441029805224275, -1.828296795875076, -1.4049257230991543, -1.2590844310335]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1605445867741944, -2.436802182704585, -1.8601958923476625, -1.6497701464271004, -1.6518483087752498]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.696556774774534, -2.986783394340015, -2.4425699304563877, -1.7815977613999774, -1.7690402292895513]}}