{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:37.222078", "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-Apr-14_to_2022-Apr-16_303.5_-27.5"}, "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": 2022040000464}, "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": "April 14 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 16 2022"}, "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": 90460.18315570703}, "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", "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": -27.5}, "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": 303.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 304.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, -27.97], [-60.68, -27.82], [-60.54, -27.5], [-60.75, -27.0], [-60.65, -26.75], [-60.75, -26.5], [-60.53, -25.97], [-60.0, -25.75], [-59.75, -25.85], [-59.5, -25.75], [-59.25, -25.85], [-59.0, -25.75], [-58.75, -25.85], [-58.5, -25.75], [-58.25, -25.85], [-58.0, -25.75], [-57.75, -25.85], [-57.5, -25.75], [-56.97, -25.97], [-56.82, -26.32], [-56.47, -26.47], [-56.32, -26.82], [-56.25, -26.85], [-56.0, -26.75], [-55.47, -26.97], [-55.25, -27.5], [-55.35, -27.75], [-55.25, -28.0], [-55.35, -28.25], [-55.25, -28.5], [-55.47, -29.03], [-56.0, -29.25], [-56.25, -29.15], [-56.5, -29.25], [-57.03, -29.03], [-57.18, -28.68], [-57.5, -28.54], [-58.0, -28.75], [-58.5, -28.54], [-59.0, -28.75], [-59.3, -28.62], [-59.35, -28.75], [-59.25, -29.0], [-59.47, -29.53], [-60.0, -29.75], [-60.25, -29.65], [-60.5, -29.75], [-61.03, -29.53], [-61.25, -29.0], [-61.15, -28.75], [-61.25, -28.5], [-61.03, -27.97]]]]}, "2022-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, -27.97], [-60.68, -27.82], [-60.54, -27.5], [-60.75, -27.0], [-60.65, -26.75], [-60.75, -26.5], [-60.53, -25.97], [-60.0, -25.75], [-59.75, -25.85], [-59.5, -25.75], [-59.25, -25.85], [-59.0, -25.75], [-58.75, -25.85], [-58.5, -25.75], [-58.25, -25.85], [-58.0, -25.75], [-57.75, -25.85], [-57.5, -25.75], [-56.97, -25.97], [-56.82, -26.32], [-56.47, -26.47], [-56.32, -26.82], [-56.25, -26.85], [-56.0, -26.75], [-55.47, -26.97], [-55.25, -27.5], [-55.35, -27.75], [-55.25, -28.0], [-55.35, -28.25], [-55.25, -28.5], [-55.47, -29.03], [-56.0, -29.25], [-56.25, -29.15], [-56.5, -29.25], [-57.03, -29.03], [-57.18, -28.68], [-57.5, -28.54], [-58.0, -28.75], [-58.5, -28.54], [-59.0, -28.75], [-59.3, -28.62], [-59.35, -28.75], [-59.25, -29.0], [-59.47, -29.53], [-60.0, -29.75], [-60.25, -29.65], [-60.5, -29.75], [-61.03, -29.53], [-61.25, -29.0], [-61.15, -28.75], [-61.25, -28.5], [-61.03, -27.97]]]]}, "2022-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, -27.97], [-60.68, -27.82], [-60.54, -27.5], [-60.75, -27.0], 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"mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.151968504442489}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.754745672756485, 15.985032514146155, 16.825813243141454]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.06648917364737, 14.906877064670653, 15.818133871722466]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.034067706511826, -5.667798668294779, -4.754039138520861]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.406896533694635, -6.262670768753878, -5.4001850484183365]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.456259528291742, -1.6572362702044043, -1.3970664568178164]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6273450483092746, -1.8416675706739556, -1.5648704775590203]}}