{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:48.626185", "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": "2015-Sep-11_to_2015-Sep-13_302.0_-21.0"}, "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": 2015090000440}, "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": "September 11 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 13 2015"}, "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": 69424.9939320517}, "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", "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": -21.0}, "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": 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": 298.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 302.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, -20.53], [-62.25, -20.0], [-62.03, -19.47], [-61.5, -19.25], [-61.25, -19.35], [-61.18, -19.32], [-61.03, -18.97], [-60.5, -18.75], [-60.25, -18.85], [-60.0, -18.75], [-59.75, -18.85], [-59.5, -18.75], [-58.97, -18.97], [-58.82, -19.32], [-58.47, -19.47], [-58.32, -19.82], [-57.97, -19.97], [-57.82, -20.32], [-57.47, -20.47], [-57.32, -20.82], [-56.97, -20.97], [-56.75, -21.5], [-56.85, -21.75], [-56.75, -22.0], [-56.97, -22.53], [-57.5, -22.75], [-58.0, -22.54], [-58.5, -22.75], [-59.03, -22.53], [-59.18, -22.18], [-59.53, -22.03], [-59.68, -21.68], [-60.03, -21.53], [-60.18, -21.18], [-60.25, -21.15], [-60.5, -21.25], [-61.03, -21.03], [-61.18, -20.68], [-61.25, -20.65], [-61.5, -20.75], [-62.03, -20.53]]]]}, "2015-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, -20.53], [-62.25, -20.0], [-62.03, -19.47], [-61.5, -19.25], [-61.25, -19.35], [-61.18, -19.32], [-61.03, -18.97], [-60.5, -18.75], [-60.25, -18.85], [-60.0, -18.75], [-59.75, -18.85], [-59.5, -18.75], [-58.97, -18.97], [-58.82, -19.32], [-58.47, -19.47], [-58.32, -19.82], [-57.97, -19.97], [-57.82, -20.32], [-57.47, -20.47], [-57.32, -20.82], [-56.97, -20.97], [-56.75, -21.5], [-56.85, -21.75], [-56.75, -22.0], [-56.97, -22.53], [-57.5, -22.75], [-58.0, -22.54], [-58.5, -22.75], [-59.03, -22.53], [-59.18, -22.18], [-59.53, -22.03], [-59.68, -21.68], [-60.03, -21.53], [-60.18, -21.18], [-60.25, -21.15], [-60.5, -21.25], [-61.03, -21.03], [-61.18, -20.68], [-61.25, -20.65], [-61.5, -20.75], [-62.03, -20.53]]]]}, "2015-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, -20.53], [-62.25, -20.0], [-62.03, -19.47], [-61.5, -19.25], [-61.25, -19.35], [-61.18, -19.32], [-61.03, -18.97], [-60.5, -18.75], [-60.25, -18.85], [-60.0, -18.75], [-59.75, -18.85], [-59.5, -18.75], [-58.97, -18.97], [-58.82, -19.32], [-58.47, -19.47], [-58.32, -19.82], [-57.97, -19.97], [-57.82, -20.32], [-57.47, -20.47], [-57.32, -20.82], [-56.97, -20.97], [-56.75, -21.5], [-56.85, -21.75], [-56.75, -22.0], [-56.97, -22.53], [-57.5, -22.75], [-58.0, -22.54], [-58.5, -22.75], [-59.03, -22.53], [-59.18, -22.18], [-59.53, -22.03], [-59.68, -21.68], [-60.03, -21.53], [-60.18, -21.18], [-60.25, -21.15], [-60.5, -21.25], [-61.03, -21.03], [-61.18, -20.68], [-61.25, -20.65], [-61.5, -20.75], [-62.03, -20.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.722108852797362}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.097747054471219}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.11849050233235, 16.052031643102225, 17.20099811730256]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.001574233924828, 13.422777336944137, 16.003375627851426]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.277968064176032, -9.140205708033747, -7.875067391203882]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.466733129314036, -10.722108852797362, -8.804066817422893]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4633033147504797, -1.863872841114181, -1.614239992979761]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5255899663945065, -2.1989849175485268, -1.8418140712931732]}}