{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:27.279305", "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": "2017-Nov-25_to_2017-Nov-27_305.0_-26.5"}, "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": 2017110000954}, "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 25 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 27 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 52678.59637419181}, "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", "Brazil", "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": -26.5}, "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": 305.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 307.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -27.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.15, -25.75], [-57.25, -25.5], [-57.03, -24.97], [-56.5, -24.75], [-56.0, -24.96], [-55.5, -24.75], [-54.97, -24.97], [-54.82, -25.32], [-54.75, -25.35], [-54.5, -25.25], [-54.25, -25.35], [-54.0, -25.25], [-53.75, -25.35], [-53.5, -25.25], [-52.97, -25.47], [-52.82, -25.82], [-52.75, -25.85], [-52.5, -25.75], [-51.97, -25.97], [-51.75, -26.5], [-51.97, -27.03], [-52.5, -27.25], [-52.75, -27.15], [-52.82, -27.18], [-52.97, -27.53], [-53.5, -27.75], [-54.03, -27.53], [-54.18, -27.18], [-54.25, -27.15], [-54.5, -27.25], [-54.75, -27.15], [-55.0, -27.25], [-55.25, -27.15], [-55.5, -27.25], [-55.75, -27.15], [-56.0, -27.25], [-56.25, -27.15], [-56.5, -27.25], [-57.03, -27.03], [-57.25, -26.5], [-57.15, -26.25], [-57.25, -26.0], [-57.15, -25.75]]]]}, "2017-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.15, -25.75], [-57.25, -25.5], [-57.03, -24.97], [-56.5, -24.75], [-56.0, -24.96], [-55.5, -24.75], [-54.97, -24.97], [-54.82, -25.32], [-54.75, -25.35], [-54.5, -25.25], [-54.25, -25.35], [-54.0, -25.25], [-53.75, -25.35], [-53.5, -25.25], [-52.97, -25.47], [-52.82, -25.82], [-52.75, -25.85], [-52.5, -25.75], [-51.97, -25.97], [-51.75, -26.5], [-51.97, -27.03], [-52.5, -27.25], [-52.75, -27.15], [-52.82, -27.18], [-52.97, -27.53], [-53.5, -27.75], [-54.03, -27.53], [-54.18, -27.18], [-54.25, -27.15], [-54.5, -27.25], [-54.75, -27.15], [-55.0, -27.25], [-55.25, -27.15], [-55.5, -27.25], [-55.75, -27.15], [-56.0, -27.25], [-56.25, -27.15], [-56.5, -27.25], [-57.03, -27.03], [-57.25, -26.5], [-57.15, -26.25], [-57.25, -26.0], [-57.15, -25.75]]]]}, "2017-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.15, -25.75], [-57.25, -25.5], [-57.03, -24.97], [-56.5, -24.75], [-56.0, -24.96], [-55.5, -24.75], [-54.97, -24.97], [-54.82, -25.32], [-54.75, -25.35], [-54.5, -25.25], [-54.25, -25.35], [-54.0, -25.25], [-53.75, -25.35], [-53.5, -25.25], [-52.97, -25.47], [-52.82, -25.82], [-52.75, -25.85], [-52.5, -25.75], [-51.97, -25.97], [-51.75, -26.5], [-51.97, -27.03], [-52.5, -27.25], [-52.75, -27.15], [-52.82, -27.18], [-52.97, -27.53], [-53.5, -27.75], [-54.03, -27.53], [-54.18, -27.18], [-54.25, -27.15], [-54.5, -27.25], [-54.75, -27.15], [-55.0, -27.25], [-55.25, -27.15], [-55.5, -27.25], [-55.75, -27.15], [-56.0, -27.25], [-56.25, -27.15], [-56.5, -27.25], [-57.03, -27.03], [-57.25, -26.5], [-57.15, -26.25], [-57.25, -26.0], [-57.15, -25.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.78257174316991}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.683617562002156}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.700614236998206, 19.039771935835176, 21.19264546535902]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.10564704418357, 17.615537451389002, 19.044092680633923]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2508187742355554, -4.982017289735731, -2.818016622035181]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.315643374084118, -5.78257174316991, -3.278146394033854]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6793095881287434, -2.562983146213231, -1.4570102487115726]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2692341908068, -2.787083994494919, -1.708698506322831]}}