{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:52.180656", "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": "2021-Aug-01_to_2021-Aug-05_325.0_-8.0"}, "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": 2021080000057}, "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": "August 01 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 05 2021"}, "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": 58042.85999348118}, "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": ["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": -8.0}, "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": 325.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "325.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 322.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 325.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.5, -7.75], [-36.97, -7.97], [-36.75, -8.5], [-36.97, -9.03], [-37.5, -9.25], [-38.03, -9.03], [-38.25, -8.5], [-38.03, -7.97], [-37.5, -7.75]]]]}, "2021-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.25, -8.5], [-38.03, -7.97], [-37.5, -7.75], [-36.97, -7.97], [-36.82, -8.32], [-36.47, -8.47], [-36.32, -8.82], [-36.25, -8.85], [-36.18, -8.82], [-36.15, -8.75], [-36.25, -8.5], [-36.03, -7.97], [-35.68, -7.82], [-35.65, -7.75], [-35.75, -7.5], [-35.53, -6.97], [-35.0, -6.75], [-34.75, -6.85], [-34.5, -6.75], [-33.97, -6.97], [-33.75, -7.5], [-33.85, -7.75], [-33.75, -8.0], [-33.85, -8.25], [-33.75, -8.5], [-33.85, -8.75], [-33.75, -9.0], [-33.97, -9.53], [-34.32, -9.68], [-34.35, -9.75], [-34.25, -10.0], [-34.47, -10.53], [-35.0, -10.75], [-35.5, -10.54], [-36.0, -10.75], [-36.53, -10.53], [-36.68, -10.18], [-37.03, -10.03], [-37.18, -9.68], [-37.53, -9.53], [-37.68, -9.18], [-38.03, -9.03], [-38.25, -8.5]]]]}, "2021-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.25, -8.5], [-38.03, -7.97], [-37.5, -7.75], [-36.97, -7.97], [-36.82, -8.32], [-36.47, -8.47], [-36.32, -8.82], [-36.25, -8.85], [-36.18, -8.82], [-36.15, -8.75], [-36.25, -8.5], [-36.03, -7.97], [-35.68, -7.82], [-35.65, -7.75], [-35.75, -7.5], [-35.65, -7.25], [-35.75, -7.0], [-35.53, -6.47], [-35.0, -6.25], [-34.47, -6.47], [-34.32, -6.82], [-33.97, -6.97], [-33.75, -7.5], [-33.85, -7.75], [-33.75, -8.0], [-33.85, -8.25], [-33.75, -8.5], [-33.85, -8.75], [-33.75, -9.0], [-33.97, -9.53], [-34.32, -9.68], [-34.35, -9.75], [-34.25, -10.0], [-34.47, -10.53], [-35.0, -10.75], [-35.5, -10.54], [-36.0, -10.75], [-36.53, -10.53], [-36.68, -10.18], [-37.03, -10.03], [-37.18, -9.68], [-37.53, -9.53], [-37.68, -9.18], [-38.03, -9.03], [-38.25, -8.5]]]]}, "2021-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.25, -8.5], [-38.03, -7.97], [-37.5, -7.75], [-36.97, -7.97], [-36.82, -8.32], [-36.47, -8.47], [-36.32, -8.82], [-36.25, -8.85], [-36.18, -8.82], [-36.15, -8.75], [-36.25, -8.5], [-36.03, -7.97], [-35.68, -7.82], [-35.65, -7.75], [-35.75, -7.5], [-35.65, -7.25], [-35.75, -7.0], [-35.53, -6.47], [-35.0, -6.25], [-34.47, -6.47], [-34.32, -6.82], [-33.97, -6.97], [-33.75, -7.5], [-33.85, -7.75], [-33.75, -8.0], [-33.85, -8.25], [-33.75, -8.5], [-33.85, -8.75], [-33.75, -9.0], [-33.97, -9.53], [-34.32, -9.68], [-34.35, -9.75], [-34.25, -10.0], [-34.47, -10.53], [-35.0, -10.75], [-35.5, -10.54], [-36.0, -10.75], [-36.53, -10.53], [-36.68, -10.18], [-37.03, -10.03], [-37.18, -9.68], [-37.53, -9.53], [-37.68, -9.18], [-38.03, -9.03], [-38.25, -8.5]]]]}, "2021-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.25, -8.5], [-38.03, -7.97], [-37.5, -7.75], [-36.97, -7.97], [-36.82, -8.32], [-36.47, -8.47], [-36.32, -8.82], [-36.25, -8.85], [-36.18, -8.82], [-36.15, -8.75], [-36.25, -8.5], [-36.03, -7.97], [-35.68, -7.82], [-35.65, -7.75], [-35.75, -7.5], [-35.65, -7.25], [-35.75, -7.0], [-35.53, -6.47], [-35.0, -6.25], [-34.47, -6.47], [-34.32, -6.82], [-33.97, -6.97], [-33.75, -7.5], [-33.97, -8.03], [-34.32, -8.18], [-34.35, -8.25], [-34.25, -8.5], [-34.47, -9.03], [-34.82, -9.18], [-34.97, -9.53], [-35.32, -9.68], [-35.35, -9.75], [-35.25, -10.0], [-35.47, -10.53], [-36.0, -10.75], [-36.53, -10.53], [-36.68, -10.18], [-37.03, -10.03], [-37.18, -9.68], [-37.53, -9.53], [-37.68, -9.18], [-38.03, -9.03], [-38.25, -8.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.9015317432768484}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1372935121287981}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.0999314313799, 22.72631704817968, 22.861258418217233, 22.55334872427244, 22.02709176719941]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.0999314313799, 20.139204175375482, 20.78280903627609, 20.20816469620786, 20.109203948795255]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1293976483781876, -1.0582632097209594, -0.963588113803894, -1.2949426433710212, -1.2819193772673525]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1293976483781876, -1.7009630089213488, -1.3823618688566626, -1.7209264725978528, -1.9015317432768484]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3324116737338225, -1.8375454397252926, -1.7249070685620485, -2.3321135835305875, -2.165030510554821]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3324116737338225, -2.464337392994581, -2.4069727671930665, -3.0430079946996313, -2.7264630504285976]}}