{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:38.834049", "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-Aug-04_to_2017-Aug-06_310.5_-19.5"}, "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": 2017080000173}, "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": "August 04 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 06 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": 61231.36757073151}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "S.E.South-America", "South-American-Monsoon"]}, "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": -19.5}, "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": 310.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "310.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 308.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 311.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.65, -18.75], [-51.75, -18.5], [-51.53, -17.97], [-51.0, -17.75], [-50.75, -17.85], [-50.5, -17.75], [-50.25, -17.85], [-50.0, -17.75], [-49.47, -17.97], [-49.32, -18.32], [-49.25, -18.35], [-49.0, -18.25], [-48.75, -18.35], [-48.5, -18.25], [-47.97, -18.47], [-47.75, -19.0], [-47.85, -19.25], [-47.75, -19.5], [-47.85, -19.75], [-47.75, -20.0], [-47.97, -20.53], [-48.5, -20.75], [-48.75, -20.65], [-48.82, -20.68], [-48.97, -21.03], [-49.5, -21.25], [-50.03, -21.03], [-50.18, -20.68], [-50.25, -20.65], [-50.5, -20.75], [-51.03, -20.53], [-51.18, -20.18], [-51.53, -20.03], [-51.75, -19.5], [-51.65, -19.25], [-51.75, -19.0], [-51.65, -18.75]]]]}, "2017-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.65, -18.75], [-51.75, -18.5], [-51.53, -17.97], [-51.0, -17.75], [-50.75, -17.85], [-50.5, -17.75], [-50.25, -17.85], [-50.0, -17.75], [-49.47, -17.97], [-49.32, -18.32], [-49.25, -18.35], [-49.0, -18.25], [-48.75, -18.35], [-48.5, -18.25], [-47.97, -18.47], [-47.75, -19.0], [-47.85, -19.25], [-47.75, -19.5], [-47.85, -19.75], [-47.75, -20.0], [-47.97, -20.53], [-48.5, -20.75], [-48.75, -20.65], [-48.82, -20.68], [-48.97, -21.03], [-49.5, -21.25], [-50.03, -21.03], [-50.18, -20.68], [-50.25, -20.65], [-50.5, -20.75], [-51.03, -20.53], [-51.18, -20.18], [-51.53, -20.03], [-51.75, -19.5], [-51.65, -19.25], [-51.75, -19.0], [-51.65, -18.75]]]]}, "2017-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.65, -18.75], [-51.75, -18.5], [-51.53, -17.97], [-51.0, -17.75], [-50.75, -17.85], [-50.5, -17.75], [-50.25, -17.85], [-50.0, -17.75], [-49.47, -17.97], [-49.32, -18.32], [-49.25, -18.35], [-49.0, -18.25], [-48.75, -18.35], [-48.5, -18.25], [-47.97, -18.47], [-47.75, -19.0], [-47.85, -19.25], [-47.75, -19.5], [-47.85, -19.75], [-47.75, -20.0], [-47.97, -20.53], [-48.5, -20.75], [-48.75, -20.65], [-48.82, -20.68], [-48.97, -21.03], [-49.5, -21.25], [-50.03, -21.03], [-50.18, -20.68], [-50.25, -20.65], [-50.5, -20.75], [-51.03, -20.53], [-51.18, -20.18], [-51.53, -20.03], [-51.75, -19.5], [-51.65, -19.25], [-51.75, -19.0], [-51.65, -18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.634053785756237}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7673506484882915}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.44953381369544, 19.327431348871812, 20.116628131028676]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.95493443171705, 18.274064028398243, 19.436851738567213]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.465091042284547, -3.743231490204009, -3.093729412976318]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.634053785756237, -4.384537134813343, -3.903700434700397]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1249343373173795, -1.8636438162248476, -1.4967082657905173]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.317335293584928, -2.1314538792883124, -1.7959056374519888]}}