{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:19.708360", "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": "2010-Dec-15_to_2010-Dec-19_299.5_4.0"}, "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": 2010120000756}, "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 15 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 19 2010"}, "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": 562079.1602163541}, "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", "Guyana", "Suriname", "Venezuela"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "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": ["South Atlantic Ocean"]}, "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": 4.0}, "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": 299.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 294.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 310.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.75, -2.5], [-52.97, -3.03], [-53.32, -3.18], [-53.47, -3.53], [-54.0, -3.75], [-54.53, -3.53], [-54.75, -3.0], [-54.53, -2.47], [-54.18, -2.32], [-54.03, -1.97], [-53.5, -1.75], [-52.97, -1.97], [-52.75, -2.5]]], [[[-59.53, 3.03], [-59.18, 3.18], [-59.15, 3.25], [-59.25, 3.5], [-59.03, 4.03], [-58.5, 4.25], [-58.25, 4.15], [-58.0, 4.25], [-57.5, 4.04], [-57.0, 4.25], [-56.47, 4.03], [-56.25, 3.5], [-56.35, 3.25], [-56.32, 3.18], [-55.97, 3.03], [-55.82, 2.68], [-55.47, 2.53], [-55.25, 2.0], [-55.35, 1.75], [-55.25, 1.5], [-55.47, 0.97], [-56.0, 0.75], [-56.25, 0.85], [-56.32, 0.82], [-56.47, 0.47], [-56.82, 0.32], [-56.97, -0.03], [-57.5, -0.25], [-57.75, -0.15], [-58.0, -0.25], [-58.53, -0.03], [-58.75, 0.5], [-58.65, 0.75], [-58.68, 0.82], [-58.75, 0.85], [-59.0, 0.75], [-59.53, 0.97], [-59.75, 1.5], [-59.65, 1.75], [-59.75, 2.0], [-59.65, 2.25], [-59.75, 2.5], [-59.53, 3.03]], [[-57.7, 1.88], [-57.82, 1.82], [-57.85, 1.75], [-57.82, 1.68], [-57.75, 1.65], [-57.68, 1.68], [-57.65, 1.75], [-57.7, 1.88]]], [[[-64.25, 2.0], [-64.03, 2.53], [-63.62, 2.7], [-63.75, 3.0], [-63.65, 3.25], [-63.75, 3.5], [-63.53, 4.03], [-63.0, 4.25], [-62.75, 4.15], [-62.68, 4.18], [-62.53, 4.53], [-62.0, 4.75], [-61.47, 4.53], [-61.25, 4.0], [-61.35, 3.75], [-61.25, 3.5], [-61.35, 3.25], [-61.25, 3.0], [-61.47, 2.47], [-62.0, 2.25], [-62.43, 2.43], [-62.25, 2.0], [-62.47, 1.47], [-62.87, 1.3], [-62.75, 1.0], [-62.85, 0.75], [-62.75, 0.5], [-62.97, -0.03], [-63.5, -0.25], [-63.75, -0.15], [-64.0, -0.25], [-64.53, -0.03], [-64.75, 0.5], [-64.65, 0.75], [-64.75, 1.0], [-64.53, 1.53], [-64.12, 1.7], [-64.25, 2.0]]], [[[-61.25, 4.5], [-61.03, 5.03], [-60.5, 5.25], [-59.97, 5.03], [-59.75, 4.5], [-59.97, 3.97], [-60.5, 3.75], [-61.03, 3.97], [-61.25, 4.5]]]]}, "2010-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.65, 1.25], [-64.75, 1.5], [-64.53, 2.03], [-64.18, 2.18], [-64.03, 2.53], [-63.68, 2.68], [-63.65, 2.75], [-63.75, 3.0], [-63.65, 3.25], [-63.75, 3.5], [-63.53, 4.03], [-63.0, 4.25], [-62.75, 4.15], [-62.68, 4.18], [-62.53, 4.53], [-62.18, 4.68], [-62.03, 5.03], [-61.5, 5.25], [-61.0, 5.04], [-60.5, 5.25], [-59.97, 5.03], [-59.82, 4.68], [-59.75, 4.65], [-59.5, 4.75], [-59.25, 4.65], [-59.0, 4.75], [-58.47, 4.53], [-58.32, 4.18], [-58.25, 4.15], [-58.0, 4.25], [-57.5, 4.04], [-57.0, 4.25], [-56.47, 4.03], [-56.25, 3.5], [-56.35, 3.25], [-56.32, 3.18], [-55.97, 3.03], [-55.82, 2.68], [-55.47, 2.53], [-55.32, 2.18], [-54.97, 2.03], [-54.82, 1.68], [-54.75, 1.65], [-54.5, 1.75], [-54.25, 1.65], [-54.0, 1.75], [-53.75, 1.65], [-53.5, 1.75], [-52.97, 1.53], [-52.82, 1.18], [-52.75, 1.15], [-52.5, 1.25], [-51.97, 1.03], [-51.75, 0.5], [-51.85, 0.25], [-51.82, 0.18], [-51.75, 0.15], [-51.5, 0.25], [-50.97, 0.03], [-50.75, -0.5], [-50.85, -0.75], [-50.82, -0.82], [-50.47, -0.97], [-50.25, -1.5], [-50.35, -1.75], [-50.25, -2.0], [-50.46, -2.5], [-50.32, -2.82], [-50.25, -2.85], [-50.0, -2.75], [-49.47, -2.97], [-49.25, -3.5], [-49.35, -3.75], [-49.32, -3.82], [-48.97, -3.97], [-48.75, -4.5], [-48.97, -5.03], [-49.5, -5.25], [-49.75, -5.15], [-49.82, -5.18], [-49.97, -5.53], [-50.5, -5.75], [-50.75, -5.65], [-51.0, -5.75], [-51.53, -5.53], [-51.68, -5.18], [-52.03, -5.03], [-52.18, -4.68], [-52.53, -4.53], [-52.75, -4.0], [-52.54, -3.5], [-52.68, -3.18], [-52.75, -3.15], [-52.82, -3.18], [-52.97, -3.53], [-53.5, -3.75], [-53.75, -3.65], [-54.0, -3.75], [-54.25, -3.65], [-54.5, -3.75], [-55.03, -3.53], [-55.18, -3.18], [-55.53, -3.03], [-55.68, -2.68], [-56.03, -2.53], [-56.18, -2.18], [-56.53, -2.03], [-56.75, -1.5], [-56.65, -1.25], [-56.68, -1.18], [-57.03, -1.03], [-57.25, -0.5], [-57.15, -0.25], [-57.18, -0.18], [-57.25, -0.15], [-57.5, -0.25], [-57.75, -0.15], [-58.0, -0.25], [-58.53, -0.03], [-58.75, 0.5], [-58.65, 0.75], [-58.68, 0.82], [-58.75, 0.85], [-59.0, 0.75], [-59.25, 0.85], [-59.32, 0.82], [-59.47, 0.47], [-60.0, 0.25], [-60.53, 0.47], [-60.68, 0.82], [-61.03, 0.97], [-61.18, 1.32], [-61.53, 1.47], [-61.68, 1.82], [-61.75, 1.85], [-62.0, 1.75], [-62.25, 1.85], [-62.32, 1.82], [-62.47, 1.47], [-62.82, 1.32], [-62.85, 1.25], [-62.75, 1.0], [-62.85, 0.75], [-62.75, 0.5], [-62.97, -0.03], [-63.5, -0.25], [-63.75, -0.15], [-64.0, -0.25], [-64.53, -0.03], [-64.75, 0.5], [-64.65, 0.75], [-64.75, 1.0], [-64.65, 1.25]]]]}, "2010-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, 2.5], [-65.15, 2.75], [-65.25, 3.0], [-65.03, 3.53], [-64.5, 3.75], [-63.97, 3.53], [-63.75, 3.0], [-63.65, 3.25], [-63.75, 3.5], [-63.53, 4.03], [-63.0, 4.25], [-62.75, 4.15], [-62.68, 4.18], [-62.53, 4.53], [-62.18, 4.68], [-62.03, 5.03], [-61.5, 5.25], [-61.0, 5.04], [-60.5, 5.25], [-59.97, 5.03], [-59.82, 4.68], [-59.75, 4.65], [-59.5, 4.75], [-59.25, 4.65], [-59.0, 4.75], [-58.47, 4.53], [-58.32, 4.18], [-58.25, 4.15], [-58.0, 4.25], [-57.5, 4.04], [-57.0, 4.25], [-56.47, 4.03], [-56.25, 3.5], [-56.35, 3.25], [-56.32, 3.18], [-55.97, 3.03], [-55.82, 2.68], [-55.47, 2.53], [-55.32, 2.18], [-54.97, 2.03], [-54.82, 1.68], [-54.75, 1.65], [-54.5, 1.75], [-54.25, 1.65], [-54.0, 1.75], [-53.75, 1.65], [-53.5, 1.75], [-52.97, 1.53], [-52.82, 1.18], [-52.75, 1.15], [-52.5, 1.25], [-51.97, 1.03], [-51.75, 0.5], [-51.85, 0.25], [-51.82, 0.18], [-51.75, 0.15], [-51.5, 0.25], [-50.97, 0.03], [-50.75, -0.5], [-50.85, -0.75], [-50.82, -0.82], [-50.47, -0.97], [-50.25, -1.5], [-50.35, -1.75], [-50.25, -2.0], [-50.46, -2.5], [-50.32, -2.82], [-50.25, -2.85], [-50.0, -2.75], [-49.47, -2.97], [-49.25, -3.5], [-49.35, -3.75], [-49.32, -3.82], [-48.97, -3.97], [-48.75, -4.5], [-48.97, -5.03], [-49.5, -5.25], [-49.75, -5.15], [-49.82, -5.18], [-49.97, -5.53], [-50.5, -5.75], [-50.75, -5.65], [-51.0, -5.75], [-51.53, -5.53], [-51.68, -5.18], [-52.03, -5.03], [-52.18, -4.68], [-52.53, -4.53], [-52.75, -4.0], [-52.54, -3.5], [-52.68, -3.18], [-52.75, -3.15], [-52.82, -3.18], [-52.97, -3.53], [-53.5, -3.75], [-53.75, -3.65], [-54.0, -3.75], [-54.25, -3.65], [-54.5, -3.75], [-55.03, -3.53], [-55.18, -3.18], [-55.53, -3.03], [-55.68, -2.68], [-56.03, -2.53], [-56.18, -2.18], [-56.53, -2.03], [-56.75, -1.5], [-56.65, -1.25], [-56.68, -1.18], [-57.03, -1.03], [-57.25, -0.5], [-57.15, -0.25], [-57.18, -0.18], [-57.25, -0.15], [-57.5, -0.25], [-57.75, -0.15], [-58.0, -0.25], [-58.53, -0.03], [-58.75, 0.5], [-58.65, 0.75], [-58.68, 0.82], [-58.75, 0.85], [-59.0, 0.75], [-59.25, 0.85], [-59.32, 0.82], [-59.47, 0.47], [-60.0, 0.25], [-60.53, 0.47], [-60.68, 0.82], [-61.03, 0.97], [-61.18, 1.32], [-61.53, 1.47], [-61.68, 1.82], [-61.75, 1.85], [-62.0, 1.75], [-62.25, 1.85], [-62.32, 1.82], [-62.47, 1.47], [-62.82, 1.32], [-62.85, 1.25], [-62.75, 1.0], [-62.85, 0.75], [-62.75, 0.5], [-62.97, -0.03], [-63.5, -0.25], [-63.75, -0.15], [-64.0, -0.25], [-64.53, -0.03], [-64.75, 0.5], [-64.65, 0.75], [-64.7, 0.88], [-65.0, 0.75], [-65.53, 0.97], [-65.75, 1.5], [-65.53, 2.03], [-65.18, 2.18], [-65.15, 2.25], [-65.25, 2.5]], [[-63.85, 2.75], [-63.8, 2.62], [-63.68, 2.68], [-63.65, 2.75], [-63.75, 3.0], [-63.85, 2.75]]]]}, "2010-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, 2.5], [-65.15, 2.75], [-65.25, 3.0], [-65.03, 3.53], [-64.5, 3.75], [-63.97, 3.53], [-63.75, 3.0], [-63.65, 3.25], [-63.75, 3.5], [-63.53, 4.03], [-63.0, 4.25], [-62.75, 4.15], [-62.68, 4.18], [-62.53, 4.53], [-62.18, 4.68], [-62.03, 5.03], [-61.5, 5.25], [-61.0, 5.04], [-60.5, 5.25], [-59.97, 5.03], [-59.82, 4.68], [-59.75, 4.65], [-59.5, 4.75], [-59.25, 4.65], [-59.0, 4.75], [-58.47, 4.53], [-58.32, 4.18], [-58.25, 4.15], [-58.0, 4.25], [-57.5, 4.04], [-57.0, 4.25], [-56.47, 4.03], [-56.25, 3.5], [-56.35, 3.25], [-56.32, 3.18], [-55.97, 3.03], [-55.82, 2.68], [-55.47, 2.53], [-55.32, 2.18], [-54.97, 2.03], [-54.82, 1.68], [-54.75, 1.65], [-54.5, 1.75], [-54.25, 1.65], [-54.0, 1.75], [-53.75, 1.65], [-53.5, 1.75], [-52.97, 1.53], [-52.82, 1.18], [-52.75, 1.15], [-52.5, 1.25], [-51.97, 1.03], [-51.75, 0.5], [-51.85, 0.25], [-51.82, 0.18], [-51.75, 0.15], [-51.5, 0.25], [-50.97, 0.03], [-50.75, -0.5], [-50.85, -0.75], [-50.82, -0.82], [-50.47, -0.97], [-50.25, -1.5], [-50.35, -1.75], [-50.25, -2.0], [-50.46, -2.5], [-50.32, -2.82], [-50.25, -2.85], [-50.0, -2.75], [-49.47, -2.97], [-49.25, -3.5], [-49.35, -3.75], [-49.32, -3.82], [-48.97, -3.97], [-48.75, -4.5], [-48.97, -5.03], [-49.5, -5.25], [-49.75, -5.15], [-49.82, -5.18], [-49.97, -5.53], [-50.5, -5.75], [-50.75, -5.65], [-51.0, -5.75], [-51.53, -5.53], [-51.68, -5.18], [-52.03, -5.03], [-52.18, -4.68], [-52.53, -4.53], [-52.75, -4.0], [-52.54, -3.5], [-52.68, -3.18], [-52.75, -3.15], [-52.82, -3.18], [-52.97, -3.53], [-53.5, -3.75], [-53.75, -3.65], [-54.0, -3.75], [-54.25, -3.65], [-54.5, -3.75], [-55.03, -3.53], [-55.18, -3.18], [-55.53, -3.03], [-55.68, -2.68], [-56.03, -2.53], [-56.18, -2.18], [-56.53, -2.03], [-56.75, -1.5], [-56.65, -1.25], [-56.68, -1.18], [-57.03, -1.03], [-57.25, -0.5], [-57.15, -0.25], [-57.18, -0.18], [-57.53, -0.03], [-57.75, 0.5], [-57.65, 0.75], [-57.68, 0.82], [-58.0, 0.96], [-58.5, 0.75], [-58.75, 0.85], [-59.0, 0.75], [-59.25, 0.85], [-59.32, 0.82], [-59.47, 0.47], [-60.0, 0.25], [-60.53, 0.47], [-60.68, 0.82], [-61.03, 0.97], [-61.18, 1.32], [-61.53, 1.47], [-61.68, 1.82], [-61.75, 1.85], [-62.0, 1.75], [-62.25, 1.85], [-62.5, 1.75], [-62.75, 1.85], [-62.82, 1.82], [-62.85, 1.75], [-62.75, 1.5], [-62.85, 1.25], [-62.75, 1.0], [-62.85, 0.75], [-62.75, 0.5], [-62.97, -0.03], [-63.5, -0.25], [-63.75, -0.15], [-64.0, -0.25], [-64.53, -0.03], [-64.75, 0.5], [-64.65, 0.75], [-64.7, 0.88], [-65.0, 0.75], [-65.53, 0.97], [-65.75, 1.5], [-65.53, 2.03], [-65.18, 2.18], [-65.15, 2.25], [-65.25, 2.5]], [[-63.85, 2.75], [-63.8, 2.62], [-63.68, 2.68], [-63.65, 2.75], [-63.75, 3.0], [-63.85, 2.75]]]]}, "2010-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.15, 2.75], [-65.25, 3.0], [-65.03, 3.53], [-64.5, 3.75], [-63.97, 3.53], [-63.75, 3.0], [-63.85, 2.75], [-63.75, 2.5], [-63.85, 2.25], [-63.75, 2.0], [-63.97, 1.47], [-64.32, 1.32], [-64.47, 0.97], [-65.0, 0.75], [-65.53, 0.97], [-65.75, 1.5], [-65.53, 2.03], [-65.18, 2.18], [-65.15, 2.25], [-65.25, 2.5], [-65.15, 2.75]]], [[[-61.03, 3.47], [-61.25, 4.0], [-61.03, 4.53], [-60.5, 4.75], [-59.97, 4.53], [-59.75, 4.0], [-59.97, 3.47], [-60.5, 3.25], [-61.03, 3.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.60813288256162}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3624606936256467}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.190105221820943, 23.961941086500985, 23.77027933554706, 24.308111185232235, 23.42700707360791]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.615533135898488, 21.27521506610418, 20.81390753854845, 21.318349268360294, 22.141191285542675]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5196045057514325, -2.58272236919821, -2.652642552128957, -2.069366857277041, -1.1868491737615159]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.487699490079933, -4.60813288256162, -4.261344496108848, -3.8641906750313524, -1.914031539003986]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5050279850575086, -2.223097147945042, -2.3679435744985806, -1.7881365579688826, -1.3489897541256912]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4821899581256193, -3.7326725757973036, -3.6294942014132685, -2.5188299036288675, -1.5064133789965284]}}