{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:18:43.605007", "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-Mar-23_to_2022-Mar-27_306.0_-26.0"}, "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": 2022030000794}, "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": "March 23 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 27 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": 125276.50395839888}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America", "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": -26.0}, "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": 306.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 304.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -28.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -23.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-51.25, -26.0], [-51.35, -26.25], [-51.25, -26.5], [-51.35, -26.75], [-51.32, -26.82], [-50.97, -26.97], [-50.75, -27.5], [-50.85, -27.75], [-50.75, -28.0], [-50.97, -28.53], [-51.5, -28.75], [-52.03, -28.53], [-52.18, -28.18], [-52.25, -28.15], [-52.5, -28.25], [-52.75, -28.15], [-53.0, -28.25], [-53.25, -28.15], [-53.5, -28.25], [-54.03, -28.03], [-54.25, -27.5], [-54.15, -27.25], [-54.18, -27.18], [-54.25, -27.15], [-54.5, -27.25], [-55.03, -27.03], [-55.18, -26.68], [-55.53, -26.53], [-55.75, -26.0], [-55.54, -25.5], [-55.75, -25.0], [-55.65, -24.75], [-55.68, -24.68], [-56.03, -24.53], [-56.25, -24.0], [-56.03, -23.47], [-55.5, -23.25], [-55.25, -23.35], [-55.18, -23.32], [-55.03, -22.97], [-54.5, -22.75], [-53.97, -22.97], [-53.82, -23.32], [-53.75, -23.35], [-53.5, -23.25], [-53.25, -23.35], [-53.0, -23.25], [-52.47, -23.47], [-52.25, -24.0], [-52.35, -24.25], [-52.32, -24.32], [-51.97, -24.47], [-51.82, -24.82], [-51.47, -24.97], [-51.25, -25.5], [-51.35, -25.75], [-51.25, -26.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.75, -26.0], [-52.52999999999997, -25.47], [-52.0, -25.25], [-51.47000000000003, -25.47], [-51.25, -26.0], [-51.35000000000002, -26.25], [-51.25, -26.5], [-51.47000000000003, -27.03], [-52.0, -27.25], [-52.52999999999997, -27.03], [-52.75, -26.5], [-52.64999999999998, -26.25], [-52.75, -26.0]]]]}, "2022-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.0, -26.75], [-54.52999999999997, -26.53], [-54.75, -26.0], [-54.52999999999997, -25.47], [-54.0, -25.25], [-53.75, -25.35], [-53.5, -25.25], [-53.0, -25.46], [-52.5, -25.25], [-52.25, -25.35], [-52.0, -25.25], [-51.47000000000003, -25.47], [-51.25, -26.0], [-51.35000000000002, -26.25], [-51.25, -26.5], [-51.47000000000003, -27.03], [-52.0, -27.25], [-52.52999999999997, -27.03], [-52.68000000000001, -26.68], [-53.0, -26.54], [-53.5, -26.75], [-53.75, -26.65], [-54.0, -26.75]]]]}, "2022-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.02999999999997, -24.53], [-56.25, -24.0], [-56.02999999999997, -23.47], [-55.5, -23.25], [-55.25, -23.35], [-55.18000000000001, -23.32], [-55.02999999999997, -22.97], [-54.5, -22.75], [-53.97000000000003, -22.97], [-53.81999999999999, -23.32], [-53.75, -23.35], [-53.5, -23.25], [-53.25, -23.35], [-53.0, -23.25], [-52.47000000000003, -23.47], [-52.25, -24.0], [-52.35000000000002, -24.25], [-52.31999999999999, -24.32], [-51.97000000000003, -24.47], [-51.81999999999999, -24.82], [-51.47000000000003, -24.97], [-51.25, -25.5], [-51.35000000000002, -25.75], [-51.25, -26.0], [-51.35000000000002, -26.25], [-51.25, -26.5], [-51.35000000000002, -26.75], [-51.31999999999999, -26.82], [-50.97000000000003, -26.97], [-50.75, -27.5], [-50.85000000000002, -27.75], [-50.75, -28.0], [-50.97000000000003, -28.53], [-51.5, 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maximum t2m.", "value": [16.541902286281868, 16.71331606619725, 16.15040167783303, 15.389409143788896, 16.041698535919636]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9897728772374137, -1.961814445116579, -3.6351005773394767, -4.139944410729098, -2.626861956436984]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9941187310591886, -2.4932954373807092, -4.622803978333138, -5.578030641079181, -3.706781566027871]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4688057093297686, -1.2822048488590103, -2.0900103173338294, -2.22771680077691, -1.3526954680031194]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.540792323647843, -1.438885116835225, -2.605293701736151, -2.8035644431889803, -1.6965025686598942]}}