{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:29.014493", "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": "2020-Apr-14_to_2020-Apr-16_311.0_-16.5"}, "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": 2020040000388}, "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 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 16 2020"}, "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": 53508.10795861749}, "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", "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": -16.5}, "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": 311.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "311.0\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": -17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.53, -14.47], [-51.18, -14.32], [-51.03, -13.97], [-50.5, -13.75], [-49.97, -13.97], [-49.82, -14.32], [-49.75, -14.35], [-49.5, -14.25], [-48.97, -14.47], [-48.75, -15.0], [-48.85, -15.25], [-48.82, -15.32], [-48.47, -15.47], [-48.32, -15.82], [-47.97, -15.97], [-47.75, -16.5], [-47.96, -17.0], [-47.75, -17.5], [-47.97, -18.03], [-48.5, -18.25], [-49.03, -18.03], [-49.18, -17.68], [-49.25, -17.65], [-49.5, -17.75], [-50.03, -17.53], [-50.18, -17.18], [-50.53, -17.03], [-50.75, -16.5], [-50.62, -16.2], [-50.75, -16.15], [-51.0, -16.25], [-51.53, -16.03], [-51.75, -15.5], [-51.65, -15.25], [-51.75, -15.0], [-51.53, -14.47]]]]}, "2020-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.53, -14.47], [-51.18, -14.32], [-51.03, -13.97], [-50.5, -13.75], [-49.97, -13.97], [-49.82, -14.32], [-49.75, -14.35], [-49.5, -14.25], [-48.97, -14.47], [-48.75, -15.0], [-48.85, -15.25], [-48.82, -15.32], [-48.47, -15.47], [-48.32, -15.82], [-47.97, -15.97], [-47.75, -16.5], [-47.96, -17.0], [-47.75, -17.5], [-47.97, -18.03], [-48.5, -18.25], [-49.03, -18.03], [-49.18, -17.68], [-49.25, -17.65], [-49.5, -17.75], [-50.03, -17.53], [-50.18, -17.18], [-50.53, -17.03], [-50.75, -16.5], [-50.62, -16.2], [-50.75, -16.15], [-51.0, -16.25], [-51.53, -16.03], [-51.75, -15.5], [-51.65, -15.25], [-51.75, -15.0], [-51.53, -14.47]]]]}, "2020-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.53, -14.47], [-51.18, -14.32], [-51.03, -13.97], [-50.5, -13.75], [-49.97, -13.97], [-49.82, -14.32], [-49.75, -14.35], [-49.5, -14.25], [-48.97, -14.47], [-48.75, -15.0], [-48.85, -15.25], [-48.82, -15.32], [-48.47, -15.47], [-48.32, -15.82], [-47.97, -15.97], [-47.75, -16.5], [-47.96, -17.0], [-47.75, -17.5], [-47.97, -18.03], [-48.5, -18.25], [-49.03, -18.03], [-49.18, -17.68], [-49.25, -17.65], [-49.5, -17.75], [-50.03, -17.53], [-50.18, -17.18], [-50.53, -17.03], [-50.75, -16.5], [-50.62, -16.2], [-50.75, -16.15], [-51.0, -16.25], [-51.53, -16.03], [-51.75, -15.5], [-51.65, -15.25], [-51.75, -15.0], [-51.53, -14.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7409500202962818}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3233947331469835}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.975042145675502, 21.74836922955359, 22.635042885538667]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.16332955541759, 19.59991364543805, 20.638569066447417]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.801308965151034, -3.0245190979559435, -2.144356136333973]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.029847554169862, -3.7409500202962818, -2.6668938566215843]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4266981603232614, -2.4193157444860898, -1.7080903869842545]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5922228294220435, -2.9512040693777624, -2.1704757152243825]}}