{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:48.115690", "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": "2016-Dec-29_to_2017-Jan-01_297.0_-6.0"}, "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": 2016120000810}, "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 29 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 01 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 110795.97660320916}, "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.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": -6.0}, "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": 297.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "297.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.25, -5.0], [-64.03, -4.47], [-63.5, -4.25], [-62.97, -4.47], [-62.82, -4.82], [-62.47, -4.97], [-62.25, -5.5], [-62.35, -5.75], [-62.25, -6.0], [-62.47, -6.53], [-63.0, -6.75], [-63.53, -6.53], [-63.75, -6.0], [-63.65, -5.75], [-63.68, -5.68], [-64.03, -5.53], [-64.25, -5.0]]]]}, "2016-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.03, -3.47], [-63.5, -3.25], [-63.25, -3.35], [-63.18, -3.32], [-63.03, -2.97], [-62.68, -2.82], [-62.65, -2.75], [-62.75, -2.5], [-62.53, -1.97], [-62.0, -1.75], [-61.75, -1.85], [-61.5, -1.75], [-60.97, -1.97], [-60.75, -2.5], [-60.85, -2.75], [-60.75, -3.0], [-60.87, -3.3], [-60.47, -3.47], [-60.25, -4.0], [-60.47, -4.53], [-60.82, -4.68], [-60.85, -4.75], [-60.75, -5.0], [-60.85, -5.25], [-60.82, -5.32], [-60.47, -5.47], [-60.25, -6.0], [-60.35, -6.25], [-60.25, -6.5], [-60.35, -6.75], [-60.25, -7.0], [-60.35, -7.25], [-60.25, -7.5], [-60.47, -8.03], [-61.0, -8.25], [-61.25, -8.15], [-61.5, -8.25], [-61.75, -8.15], [-62.0, -8.25], [-62.53, -8.03], [-62.75, -7.5], [-62.65, -7.25], [-62.68, -7.18], [-63.03, -7.03], [-63.18, -6.68], [-63.53, -6.53], [-63.75, -6.0], [-63.65, -5.75], [-63.68, -5.68], [-64.03, -5.53], [-64.25, -5.0], [-64.04, -4.5], [-64.25, -4.0], [-64.03, -3.47]]]]}, "2016-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.03, -3.47], [-63.5, -3.25], [-63.25, -3.35], [-63.18, -3.32], [-63.03, -2.97], [-62.68, -2.82], [-62.65, -2.75], [-62.75, -2.5], [-62.53, -1.97], [-62.0, -1.75], [-61.75, -1.85], [-61.5, -1.75], [-60.97, -1.97], [-60.75, -2.5], [-60.85, -2.75], [-60.75, -3.0], [-60.87, -3.3], [-60.47, -3.47], [-60.25, -4.0], [-60.47, -4.53], [-60.82, -4.68], [-60.85, -4.75], [-60.75, -5.0], [-60.85, -5.25], [-60.82, -5.32], [-60.47, -5.47], [-60.25, -6.0], [-60.35, -6.25], [-60.25, -6.5], [-60.35, -6.75], [-60.25, -7.0], [-60.35, -7.25], [-60.25, -7.5], [-60.47, -8.03], [-61.0, -8.25], [-61.25, -8.15], [-61.5, -8.25], [-61.75, -8.15], [-62.0, -8.25], [-62.53, -8.03], [-62.75, -7.5], [-62.65, -7.25], [-62.68, -7.18], [-63.03, -7.03], [-63.18, -6.68], [-63.53, -6.53], [-63.75, -6.0], [-63.65, -5.75], [-63.68, -5.68], [-64.03, -5.53], [-64.25, -5.0], [-64.04, -4.5], [-64.25, -4.0], [-64.03, -3.47]]]]}, "2017-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.25, -4.0], [-64.03, -3.47], [-63.5, -3.25], [-63.25, -3.35], [-63.18, -3.32], [-63.03, -2.97], [-62.68, -2.82], [-62.65, -2.75], [-62.75, -2.5], [-62.53, -1.97], [-62.0, -1.75], [-61.75, -1.85], [-61.5, -1.75], [-60.97, -1.97], [-60.75, -2.5], [-60.85, -2.75], [-60.75, -3.0], [-60.87, -3.3], [-60.47, -3.47], [-60.25, -4.0], [-60.47, -4.53], [-60.82, -4.68], [-60.85, -4.75], [-60.75, -5.0], [-60.85, -5.25], [-60.82, -5.32], [-60.47, -5.47], [-60.25, -6.0], [-60.35, -6.25], [-60.25, -6.5], [-60.35, -6.75], [-60.25, -7.0], [-60.35, -7.25], [-60.25, -7.5], [-60.47, -8.03], [-61.0, -8.25], [-61.25, -8.15], [-61.5, -8.25], [-61.75, -8.15], [-62.0, -8.25], [-62.53, -8.03], [-62.75, -7.5], [-62.65, -7.25], [-62.68, -7.18], [-63.03, -7.03], [-63.18, -6.68], [-63.53, -6.53], [-63.75, -6.0], [-63.53, -5.47], [-63.0, -5.25], [-63.53, -5.03], [-63.68, -4.68], [-64.03, -4.53], [-64.25, -4.0]], [[-62.7, -5.38], [-62.65, -5.25], [-62.68, -5.18], [-62.75, -5.15], [-63.0, -5.25], [-62.7, -5.38]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.0844897708371946}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2535405113656914}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.048861017241222, 24.65479955666831, 24.413091436987145, 24.70296098090489]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.733776516661408, 23.970406171613604, 23.517988660376204, 24.124665114058644]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9264005445249192, -1.215792224181213, -1.4480145692159425, -1.1164608689114124]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0912078921820125, -1.686486041688397, -2.0844897708371946, -1.600264362391556]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2372666410881938, -1.6101299144165597, -1.902763002184327, -1.482521716961224]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4764970972547886, -2.3776571014744885, -2.41394561810051, -2.153374231934031]}}