{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:03.057555", "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-Feb-02_to_2010-Feb-09_142.5_-3.0"}, "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": 2010020000111}, "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": "February 02 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 09 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 64799.68021128389}, "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": ["Papua New Guinea"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": ["Bismarck Sea", "South Pacific 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": -3.0}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 145.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.75}, "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": {"2010-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -3.53], [141.75, -3.0], [141.97, -2.47], [142.5, 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"2010-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, -3.53], [141.25, -3.0], [141.47, -2.47], [142.0, -2.25], [142.25, -2.35], [142.5, -2.25], [142.75, -2.35], [143.0, -2.25], [143.53, -2.47], [143.7, -2.87], [144.0, -2.75], [144.53, -2.97], [144.68, -3.32], [145.03, -3.47], [145.25, -4.0], [145.03, -4.53], [144.5, -4.75], [143.97, -4.53], [143.82, -4.18], [143.47, -4.03], [143.3, -3.63], [143.0, -3.75], [142.75, -3.65], [142.5, -3.75], [142.25, -3.65], [142.0, -3.75], [141.47, -3.53]]]]}, "2010-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.47, -3.47], [140.82, -3.32], [140.88, -3.2], [140.47, -3.03], [140.25, -2.5], [140.47, -1.97], [141.0, -1.75], [141.25, -1.85], [141.5, -1.75], [141.75, -1.85], [142.0, -1.75], [142.25, -1.85], [142.5, -1.75], [143.03, -1.97], [143.18, -2.32], [143.25, -2.35], [143.5, -2.25], [143.75, -2.35], [144.0, -2.25], [144.53, -2.47], [144.68, -2.82], [144.75, -2.85], [145.0, -2.75], [145.53, -2.97], [145.75, -3.5], [145.65, -3.75], [145.75, -4.0], [145.53, -4.53], [145.0, -4.75], [144.75, -4.65], [144.5, -4.75], [143.97, -4.53], [143.82, -4.18], [143.75, -4.15], [143.5, -4.25], [143.25, -4.15], [143.0, -4.25], [142.5, -4.04], [142.18, -4.18], [142.03, -4.53], [141.68, -4.68], [141.53, -5.03], [141.0, -5.25], [140.47, -5.03], [140.25, -4.5], [140.35, -4.25], [140.25, -4.0], [140.47, -3.47]]]]}, "2010-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.47, -3.47], [140.82, -3.32], [140.88, -3.2], [140.47, -3.03], [140.25, -2.5], [140.47, -1.97], [141.0, -1.75], [141.25, -1.85], [141.5, -1.75], [141.75, -1.85], [142.0, -1.75], [142.25, -1.85], [142.5, -1.75], [143.03, -1.97], [143.18, -2.32], [143.25, -2.35], [143.5, -2.25], [143.75, -2.35], [144.0, -2.25], [144.53, -2.47], [144.68, -2.82], [144.75, -2.85], [145.0, -2.75], [145.53, -2.97], [145.75, -3.5], [145.65, -3.75], [145.75, -4.0], [145.53, -4.53], [145.0, -4.75], [144.75, -4.65], [144.5, -4.75], [143.97, -4.53], [143.82, -4.18], [143.75, -4.15], [143.5, -4.25], [143.25, -4.15], [143.0, -4.25], [142.5, -4.04], [142.18, -4.18], [142.03, -4.53], [141.68, -4.68], [141.53, -5.03], [141.0, -5.25], [140.47, -5.03], [140.25, -4.5], [140.35, -4.25], [140.25, -4.0], [140.47, -3.47]]]]}, "2010-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.47, -3.47], [140.82, -3.32], [140.88, -3.2], [140.47, -3.03], [140.25, -2.5], [140.47, -1.97], [141.0, -1.75], [141.25, -1.85], [141.5, -1.75], [141.75, -1.85], [142.0, -1.75], [142.25, -1.85], [142.5, -1.75], [143.03, -1.97], [143.18, -2.32], [143.25, -2.35], [143.5, -2.25], [143.75, -2.35], [144.0, -2.25], [144.53, -2.47], [144.68, -2.82], [144.75, -2.85], [145.0, -2.75], [145.53, -2.97], [145.75, -3.5], [145.65, -3.75], [145.75, -4.0], [145.53, -4.53], [145.0, -4.75], [144.75, -4.65], [144.5, -4.75], [143.97, -4.53], [143.82, -4.18], [143.75, -4.15], [143.5, -4.25], [143.25, -4.15], [143.0, -4.25], [142.5, -4.04], [142.18, -4.18], [142.03, -4.53], [141.68, -4.68], [141.53, -5.03], [141.0, -5.25], [140.47, -5.03], [140.25, -4.5], [140.35, -4.25], [140.25, -4.0], [140.47, -3.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.8507816118776077}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0431001091518102}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.348772328361747, 25.975073073905378, 26.286720870761258, 25.560631910032896, 26.049201100900973, 25.275425301178927, 25.37803161164726, 25.40443472619245]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.295029161162745, 25.90464380046086, 26.2722248159605, 25.560631910032896, 25.4496693035004, 22.267489791599417, 22.462578183786263, 22.303295394584495]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7173832587144489, -1.0731151261978766, -0.7489303568152934, -0.845384346413141, -0.8395115815496297, -1.1490617458139485, -1.0574877194756704, -1.0368176036993921]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.720741621736579, -1.0855250854481824, -0.7904568575885946, -0.845384346413141, -0.9513721660417218, -1.8507816118776077, -1.4607808089572245, -1.5465528821230237]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3700011245635384, -2.027707765357986, -1.393912103310918, -1.5861499729752069, -1.5484416079499936, -1.885582273162176, -1.768255730101481, -1.7202126827043571]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.378122716221034, -2.049083633169562, -1.4684495092470862, -1.5861499729752069, -1.8159394754650322, -2.3045726030111284, -2.2696448505046414, -2.203056784296593]}}