{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:04.624306", "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-Apr-26_to_2013-Apr-29_147.0_-2.0"}, "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": 2013040001038}, "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": "April 26 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 29 2013"}, "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": 58698.94088733508}, "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": ["Equatorial.Pacific-Ocean"]}, "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": -2.0}, "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": 147.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "147.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 144.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 148.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.47, -0.47], [145.0, -0.25], [145.53, -0.47], [145.68, -0.82], [146.03, -0.97], [146.18, -1.32], [146.25, -1.35], [146.5, -1.25], [147.03, -1.47], [147.25, -2.0], [147.13, -2.3], [147.25, -2.35], [147.5, -2.25], [148.03, -2.47], [148.25, -3.0], [148.03, -3.53], [147.5, -3.75], [147.25, -3.65], [147.0, -3.75], [146.47, -3.53], [146.25, -3.0], [146.38, -2.7], [146.25, -2.65], [146.0, -2.75], [145.47, -2.53], [145.32, -2.18], [145.25, -2.15], [145.0, -2.25], [144.47, -2.03], [144.25, -1.5], [144.35, -1.25], [144.25, -1.0], [144.47, -0.47]]]]}, "2013-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.47, -0.47], [145.0, -0.25], [145.53, -0.47], [145.68, -0.82], [146.03, -0.97], [146.18, -1.32], [146.25, -1.35], [146.5, -1.25], [146.75, -1.35], [147.0, -1.25], [147.25, -1.35], [147.32, -1.32], [147.35, -1.25], [147.25, -1.0], [147.35, -0.75], [147.25, -0.5], [147.47, 0.03], [148.0, 0.25], [148.25, 0.15], [148.5, 0.25], [149.03, 0.03], [149.25, -0.5], [149.15, -0.75], [149.25, -1.0], [149.15, -1.25], [149.25, -1.5], [149.15, -1.75], [149.25, -2.0], [149.03, -2.53], [148.68, -2.68], [148.53, -3.03], [148.18, -3.18], [148.03, -3.53], [147.5, -3.75], [147.25, -3.65], [147.0, -3.75], [146.47, -3.53], [146.25, -3.0], [146.38, -2.7], [146.25, -2.65], [146.0, -2.75], [145.47, -2.53], [145.32, -2.18], [145.25, -2.15], [145.0, -2.25], [144.47, -2.03], [144.25, -1.5], [144.35, -1.25], [144.25, -1.0], [144.47, -0.47]]]]}, "2013-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.47, -0.47], [145.0, -0.25], [145.53, -0.47], [145.68, -0.82], [146.03, -0.97], [146.18, -1.32], [146.25, -1.35], [146.5, -1.25], [146.75, -1.35], [147.0, -1.25], [147.25, -1.35], [147.32, -1.32], [147.35, -1.25], [147.25, -1.0], [147.35, -0.75], [147.25, -0.5], [147.47, 0.03], [148.0, 0.25], [148.25, 0.15], [148.5, 0.25], [149.03, 0.03], [149.25, -0.5], [149.15, -0.75], [149.25, -1.0], [149.15, -1.25], [149.25, -1.5], [149.15, -1.75], [149.25, -2.0], [149.03, -2.53], [148.68, -2.68], [148.53, -3.03], [148.18, -3.18], [148.03, -3.53], [147.5, -3.75], [147.25, -3.65], [147.0, -3.75], [146.47, -3.53], [146.25, -3.0], [146.38, -2.7], [146.25, -2.65], [146.0, -2.75], [145.47, -2.53], [145.32, -2.18], [145.25, -2.15], [145.0, -2.25], [144.47, -2.03], [144.25, -1.5], [144.35, -1.25], [144.25, -1.0], [144.47, -0.47]]]]}, "2013-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -2.0], [146.47, -1.47], [147.0, -1.25], [147.25, -1.35], [147.32, -1.32], [147.35, -1.25], [147.25, -1.0], [147.35, -0.75], [147.25, -0.5], [147.47, 0.03], [148.0, 0.25], [148.25, 0.15], [148.5, 0.25], [149.03, 0.03], [149.25, -0.5], [149.15, -0.75], [149.25, -1.0], [149.15, -1.25], [149.25, -1.5], [149.15, -1.75], [149.25, -2.0], [149.03, -2.53], [148.68, -2.68], [148.53, -3.03], [148.0, -3.25], [147.75, -3.15], [147.5, -3.25], [146.97, -3.03], [146.82, -2.68], [146.47, -2.53], [146.25, -2.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.264252852076254}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.8116993420642931}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.48340231684739, 26.39463158709475, 26.389513323542758, 26.486043411134915]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.41203529649323, 25.381630834186296, 25.491368986054795, 25.78640521838264]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7764292113386985, -0.8425646262219587, -0.8431705972559544, -0.733574064351122]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8247314821738883, -1.264252852076254, -1.1546153912811405, -0.8557783211502965]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.46897813202564, -1.6279684626415896, -1.6789733815928976, -1.4825936258835373]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5724132003184967, -2.528087008816637, -2.3364521180320335, -1.7184527946425032]}}