{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:39.628377", "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": "2018-Dec-01_to_2018-Dec-03_302.0_-39.5"}, "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": 2018120000025}, "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": "December 01 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 03 2018"}, "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": 65958.85007689842}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America", "S.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": -39.5}, "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": 302.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "302.0\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": 302.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -42.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -38.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.15, -41.75], [-61.25, -41.5], [-61.03, -40.97], [-60.68, -40.82], [-60.65, -40.75], [-60.75, -40.5], [-60.65, -40.25], [-60.75, -40.0], [-60.65, -39.75], [-60.75, -39.5], [-60.53, -38.97], [-60.18, -38.82], [-60.03, -38.47], [-59.5, -38.25], [-59.25, -38.35], [-59.18, -38.32], [-59.03, -37.97], [-58.5, -37.75], [-57.97, -37.97], [-57.82, -38.32], [-57.47, -38.47], [-57.25, -39.0], [-57.35, -39.25], [-57.25, -39.5], [-57.35, -39.75], [-57.25, -40.0], [-57.47, -40.53], [-58.0, -40.75], [-58.25, -40.65], [-58.32, -40.68], [-58.35, -40.75], [-58.25, -41.0], [-58.47, -41.53], [-58.82, -41.68], [-58.85, -41.75], [-58.75, -42.0], [-58.97, -42.53], [-59.5, -42.75], [-59.75, -42.65], [-59.82, -42.68], [-59.97, -43.03], [-60.5, -43.25], [-61.03, -43.03], [-61.25, -42.5], [-61.15, -42.25], [-61.25, -42.0], [-61.15, -41.75]]]]}, "2018-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.15, -41.75], [-61.25, -41.5], [-61.03, -40.97], [-60.68, -40.82], [-60.65, -40.75], [-60.75, -40.5], [-60.65, -40.25], [-60.75, -40.0], [-60.65, -39.75], [-60.75, -39.5], [-60.53, -38.97], [-60.18, -38.82], [-60.03, -38.47], [-59.5, -38.25], [-59.25, -38.35], [-59.18, -38.32], [-59.03, -37.97], [-58.5, -37.75], [-57.97, -37.97], [-57.82, -38.32], [-57.47, -38.47], [-57.25, -39.0], [-57.35, -39.25], [-57.25, -39.5], [-57.35, -39.75], [-57.25, -40.0], [-57.47, -40.53], [-58.0, -40.75], [-58.25, -40.65], [-58.32, -40.68], [-58.35, -40.75], [-58.25, -41.0], [-58.47, -41.53], [-58.82, -41.68], [-58.85, -41.75], [-58.75, -42.0], [-58.97, -42.53], [-59.5, -42.75], [-59.75, -42.65], [-59.82, -42.68], [-59.97, -43.03], [-60.5, -43.25], [-61.03, -43.03], [-61.25, -42.5], [-61.15, -42.25], [-61.25, -42.0], [-61.15, -41.75]]]]}, "2018-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.15, -41.75], [-61.25, -41.5], [-61.03, -40.97], [-60.68, -40.82], [-60.65, -40.75], [-60.75, -40.5], [-60.65, -40.25], [-60.75, -40.0], [-60.65, -39.75], [-60.75, -39.5], [-60.53, -38.97], [-60.18, -38.82], [-60.03, -38.47], [-59.5, -38.25], [-59.25, -38.35], [-59.18, -38.32], [-59.03, -37.97], [-58.5, -37.75], [-57.97, -37.97], [-57.82, -38.32], [-57.47, -38.47], [-57.25, -39.0], [-57.35, -39.25], [-57.25, -39.5], [-57.35, -39.75], [-57.25, -40.0], [-57.47, -40.53], [-58.0, -40.75], [-58.25, -40.65], [-58.32, -40.68], [-58.35, -40.75], [-58.25, -41.0], [-58.47, -41.53], [-58.82, -41.68], [-58.85, -41.75], [-58.75, -42.0], [-58.97, -42.53], [-59.5, -42.75], [-59.75, -42.65], [-59.82, -42.68], [-59.97, -43.03], [-60.5, -43.25], [-61.03, -43.03], [-61.25, -42.5], [-61.15, -42.25], [-61.25, -42.0], [-61.15, -41.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.656286019617198}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.879494780746264}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.187763066391426, 11.735195539611027, 11.902686202988946]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.971713965476795, 10.763627949965667, 10.80983125933085]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.661668167405866, -3.0741519080084294, -2.9026642668244955]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.7829320689501174, -4.656286019617198, -3.9822897712845133]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.454235865434289, -1.6533842755862125, -1.5380127873319478]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6136411533287296, -2.002300340473301, -1.7671285326665953]}}