{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:16.366641", "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": "2013-Dec-13_to_2013-Dec-17_301.0_5.0"}, "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": 2013120000562}, "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 13 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 17 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 86066.09113305711}, "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": ["Guyana", "Venezuela"]}, "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": 5.0}, "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": 301.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.0\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": 4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 7.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, 7.5], [-62.03, 8.03], [-61.5, 8.25], [-60.97, 8.03], [-60.82, 7.68], [-60.75, 7.65], [-60.5, 7.75], [-60.25, 7.65], [-60.0, 7.75], [-59.75, 7.65], [-59.5, 7.75], [-59.0, 7.54], [-58.5, 7.75], [-57.97, 7.53], [-57.82, 7.18], [-57.47, 7.03], [-57.32, 6.68], [-56.97, 6.53], [-56.75, 6.0], [-56.85, 5.75], [-56.75, 5.5], [-56.97, 4.97], [-57.5, 4.75], [-58.0, 4.96], [-58.5, 4.75], [-58.75, 4.85], [-59.0, 4.75], [-59.53, 4.97], [-59.68, 5.32], [-60.03, 5.47], [-60.18, 5.82], [-60.53, 5.97], [-60.68, 6.32], [-60.75, 6.35], [-61.0, 6.25], [-61.53, 6.47], [-61.68, 6.82], [-62.03, 6.97], [-62.25, 7.5]]]]}, "2013-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, 7.5], [-62.03, 8.03], [-61.5, 8.25], [-60.97, 8.03], [-60.82, 7.68], [-60.75, 7.65], [-60.5, 7.75], [-60.25, 7.65], [-60.0, 7.75], [-59.75, 7.65], [-59.5, 7.75], [-59.0, 7.54], [-58.5, 7.75], [-57.97, 7.53], [-57.82, 7.18], [-57.47, 7.03], [-57.32, 6.68], [-56.97, 6.53], [-56.75, 6.0], [-56.85, 5.75], [-56.75, 5.5], [-56.97, 4.97], [-57.5, 4.75], [-57.8, 4.88], [-57.97, 4.47], [-58.32, 4.32], [-58.47, 3.97], [-59.0, 3.75], [-59.53, 3.97], [-59.68, 4.32], [-60.03, 4.47], [-60.18, 4.82], [-60.25, 4.85], [-60.5, 4.75], [-60.75, 4.85], [-61.0, 4.75], [-61.53, 4.97], [-61.75, 5.5], [-61.53, 6.03], [-61.18, 6.18], [-61.12, 6.3], [-61.53, 6.47], [-61.68, 6.82], [-62.03, 6.97], [-62.25, 7.5]]]]}, "2013-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, 7.5], [-62.03, 8.03], [-61.5, 8.25], [-60.97, 8.03], [-60.82, 7.68], [-60.75, 7.65], [-60.5, 7.75], [-60.25, 7.65], [-60.0, 7.75], [-59.75, 7.65], [-59.5, 7.75], [-59.0, 7.54], [-58.5, 7.75], [-57.97, 7.53], [-57.82, 7.18], [-57.47, 7.03], [-57.32, 6.68], [-56.97, 6.53], [-56.75, 6.0], [-56.85, 5.75], [-56.75, 5.5], [-56.97, 4.97], [-57.5, 4.75], [-57.8, 4.88], [-57.97, 4.47], [-58.32, 4.32], [-58.47, 3.97], [-59.0, 3.75], [-59.53, 3.97], [-59.68, 4.32], [-60.03, 4.47], [-60.18, 4.82], [-60.25, 4.85], [-60.5, 4.75], [-60.75, 4.85], [-61.0, 4.75], [-61.53, 4.97], [-61.75, 5.5], [-61.53, 6.03], [-61.18, 6.18], [-61.12, 6.3], [-61.53, 6.47], [-61.68, 6.82], [-62.03, 6.97], [-62.25, 7.5]]]]}, "2013-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.5, 6.75], [-60.25, 6.65], [-60.0, 6.75], [-59.75, 6.65], [-59.5, 6.75], [-58.97, 6.53], [-58.82, 6.18], [-58.75, 6.15], [-58.5, 6.25], [-57.97, 6.03], [-57.75, 5.5], [-57.85, 5.25], [-57.75, 5.0], [-57.97, 4.47], [-58.32, 4.32], [-58.47, 3.97], [-59.0, 3.75], [-59.53, 3.97], [-59.68, 4.32], [-60.03, 4.47], [-60.18, 4.82], [-60.25, 4.85], [-60.5, 4.75], [-60.75, 4.85], [-61.0, 4.75], [-61.53, 4.97], [-61.75, 5.5], [-61.53, 6.03], [-61.18, 6.18], [-61.03, 6.53], [-60.5, 6.75]]]]}, "2013-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.0, 5.75], [-58.47, 5.53], [-58.25, 5.0], [-58.47, 4.47], [-59.0, 4.25], [-59.53, 4.47], [-59.75, 5.0], [-59.53, 5.53], [-59.0, 5.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.994487758216394}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2420580911107597}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.090962891433207, 23.311212125193435, 23.169818329441625, 22.410980447755435, 23.834314405981047]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.332052291948116, 19.998023050902987, 19.64308166772838, 19.592357270278796, 23.834314405981047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0298267713198597, -1.230686202458626, -1.3466234094728122, -1.3453753528459147, -1.1096814129122095]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5464525534342783, -1.9315299079754027, -1.994487758216394, -1.9140627107494765, -1.1096814129122095]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5542365748926663, -1.7274915891383762, -1.892953863409435, -1.6851342874367115, -1.313847217508843]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9964868589217937, -2.1377611710520132, -2.3159253705790994, -2.182255854371334, -1.313847217508843]}}