{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:29.476265", "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": "2023-Mar-01_to_2023-Mar-03_305.5_-23.0"}, "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": 2023030000014}, "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 01 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2023"}, "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": 119018.56111078605}, "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", "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": -23.0}, "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": 305.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.5\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": 307.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.5, -22.75], [-56.25, -22.85], [-56.18, -22.82], [-56.15, -22.75], [-56.25, -22.5], [-56.15, -22.25], [-56.25, -22.0], [-56.03, -21.47], [-55.68, -21.32], [-55.53, -20.97], [-55.0, -20.75], [-54.75, -20.85], [-54.5, -20.75], [-53.97, -20.97], [-53.82, -21.32], [-53.47, -21.47], [-53.25, -22.0], [-53.35, -22.25], [-53.32, -22.32], [-52.97, -22.47], [-52.75, -23.0], [-52.85, -23.25], [-52.82, -23.32], [-52.47, -23.47], [-52.25, -24.0], [-52.35, -24.25], [-52.25, -24.5], [-52.47, -25.03], [-53.0, -25.25], [-53.25, -25.15], [-53.5, -25.25], [-53.75, -25.15], [-53.82, -25.18], [-53.97, -25.53], [-54.5, -25.75], [-54.75, -25.65], [-55.0, -25.75], [-55.25, -25.65], [-55.5, -25.75], [-55.75, -25.65], [-56.0, -25.75], [-56.53, -25.53], [-56.75, -25.0], [-56.65, -24.75], [-56.68, -24.68], [-56.75, -24.65], [-57.0, -24.75], [-57.53, -24.53], [-57.75, -24.0], [-57.53, -23.47], [-57.18, -23.32], [-57.03, -22.97], [-56.5, -22.75]]]]}, "2023-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.5, -22.75], [-56.25, -22.85], [-56.18, -22.82], [-56.15, -22.75], [-56.25, -22.5], [-56.15, -22.25], [-56.25, -22.0], [-56.03, -21.47], [-55.68, -21.32], [-55.53, -20.97], [-55.0, -20.75], [-54.75, -20.85], [-54.5, -20.75], [-53.97, -20.97], [-53.82, -21.32], [-53.47, -21.47], [-53.25, -22.0], [-53.35, -22.25], [-53.32, -22.32], [-52.97, -22.47], [-52.75, -23.0], [-52.85, -23.25], [-52.82, -23.32], [-52.47, -23.47], [-52.25, -24.0], [-52.35, -24.25], [-52.25, -24.5], [-52.47, -25.03], [-53.0, -25.25], [-53.25, -25.15], [-53.5, -25.25], [-53.75, -25.15], [-53.82, -25.18], [-53.97, -25.53], [-54.5, -25.75], [-54.75, -25.65], [-55.0, -25.75], [-55.25, -25.65], [-55.5, -25.75], [-55.75, -25.65], [-56.0, -25.75], [-56.53, -25.53], [-56.75, -25.0], [-56.65, -24.75], [-56.68, -24.68], [-56.75, -24.65], [-57.0, -24.75], [-57.53, -24.53], [-57.75, -24.0], [-57.53, -23.47], [-57.18, -23.32], [-57.03, -22.97], [-56.5, -22.75]]]]}, "2023-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.5, -22.75], [-56.25, -22.85], [-56.18, -22.82], [-56.15, -22.75], [-56.25, -22.5], [-56.15, -22.25], [-56.25, -22.0], [-56.03, -21.47], [-55.68, -21.32], [-55.53, -20.97], [-55.0, -20.75], [-54.75, -20.85], [-54.5, -20.75], [-53.97, -20.97], [-53.82, -21.32], [-53.47, -21.47], [-53.25, -22.0], [-53.35, -22.25], [-53.32, -22.32], [-52.97, -22.47], [-52.75, -23.0], [-52.85, -23.25], [-52.82, -23.32], [-52.47, -23.47], [-52.25, -24.0], [-52.35, -24.25], [-52.25, -24.5], [-52.47, -25.03], [-53.0, -25.25], [-53.25, -25.15], [-53.5, -25.25], [-53.75, -25.15], [-53.82, -25.18], [-53.97, -25.53], [-54.5, -25.75], [-54.75, -25.65], [-55.0, -25.75], [-55.25, -25.65], [-55.5, -25.75], [-55.75, -25.65], [-56.0, -25.75], [-56.53, -25.53], [-56.75, -25.0], [-56.65, -24.75], [-56.68, -24.68], [-56.75, -24.65], [-57.0, -24.75], [-57.53, -24.53], [-57.75, -24.0], [-57.53, -23.47], [-57.18, -23.32], [-57.03, -22.97], [-56.5, -22.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.060992949688455}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.8610173761198086}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.890423146226453, 22.70351907557165, 23.005891619872386]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.885129532624944, 21.763696692139888, 21.68409616889079]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.8153095819056726, -3.0281315707386947, -2.739610975715059]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.476487095724167, -4.060992949688455, -3.30655422559272]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6949249788583625, -1.8354515417512358, -1.692443028750843]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1510738486762926, -2.2330090331792447, -2.1127544346650264]}}