{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:58.033327", "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": "2018-Jan-14_to_2018-Jan-17_193.5_67.0"}, "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": 2018010002015}, "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": "January 14 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 17 2018"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 57842.94940385197}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["Bering Sea", "Chukchi Sea"]}, "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": 67.0}, "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": 193.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "193.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 192.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 199.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 65.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 68.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-161.53, 65.97], [-161.75, 66.5], [-161.53, 67.03], [-161.0, 67.25], [-160.47, 67.03], [-160.25, 66.5], [-160.47, 65.97], [-161.0, 65.75], [-161.53, 65.97]]], [[[-167.75, 67.0], [-167.53, 67.53], [-167.0, 67.75], [-166.75, 67.65], [-166.5, 67.75], [-166.25, 67.65], [-166.0, 67.75], [-165.75, 67.65], [-165.5, 67.75], [-165.25, 67.65], [-165.0, 67.75], [-164.75, 67.65], [-164.5, 67.75], [-164.25, 67.65], [-164.0, 67.75], [-163.75, 67.65], [-163.5, 67.75], [-162.97, 67.53], [-162.75, 67.0], [-162.97, 66.47], [-163.5, 66.25], [-163.75, 66.35], [-164.0, 66.25], [-164.25, 66.35], [-164.5, 66.25], [-164.75, 66.35], [-165.0, 66.25], [-165.25, 66.35], [-165.5, 66.25], [-165.75, 66.35], [-166.0, 66.25], [-166.25, 66.35], [-166.5, 66.25], [-166.75, 66.35], [-167.0, 66.25], [-167.53, 66.47], [-167.75, 67.0]]]]}, "2018-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-168.03, 69.03], [-167.5, 69.25], [-167.25, 69.15], [-167.0, 69.25], [-166.75, 69.15], [-166.5, 69.25], [-166.25, 69.15], [-166.0, 69.25], [-165.75, 69.15], [-165.5, 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[-167.65, 67.25], [-167.68, 67.32], [-168.03, 67.47], [-168.25, 68.0], [-168.15, 68.25], [-168.25, 68.5], [-168.03, 69.03]]]]}, "2018-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-168.03, 69.03], [-167.5, 69.25], [-167.25, 69.15], [-167.0, 69.25], [-166.75, 69.15], [-166.5, 69.25], [-166.25, 69.15], [-166.0, 69.25], [-165.75, 69.15], [-165.5, 69.25], [-165.25, 69.15], [-165.0, 69.25], [-164.47, 69.03], [-164.25, 68.5], [-164.35, 68.25], [-164.32, 68.18], [-163.97, 68.03], [-163.82, 67.68], [-163.75, 67.65], [-163.5, 67.75], [-163.25, 67.65], [-163.0, 67.75], [-162.47, 67.53], [-162.32, 67.18], [-162.25, 67.15], [-162.0, 67.25], [-161.75, 67.15], [-161.5, 67.25], [-161.25, 67.15], [-161.0, 67.25], [-160.47, 67.03], [-160.25, 66.5], [-160.47, 65.97], [-161.0, 65.75], [-161.25, 65.85], [-161.5, 65.75], [-161.75, 65.85], [-161.82, 65.82], [-161.97, 65.47], [-162.5, 65.25], [-163.03, 65.47], [-163.18, 65.82], [-163.25, 65.85], [-163.5, 65.75], [-163.75, 65.85], 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"description": "Mean t2m anomaly over entire duration", "value": 12.664536155878192}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-6.730361616421703, -5.668597908943241, -3.3448598596501142, -7.702341237955807]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-6.373308688093573, -3.062296406405949, -0.6171125340727599, -6.2645317972095995]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [10.467884859477582, 12.632191720746077, 14.978674833124723, 10.754828454731669]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [12.446996365893483, 16.25212365344447, 18.915370574253302, 14.355224758843377]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4853340580400056, 1.739528351382665, 2.098758177852306, 1.5265984241179997]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5398219827368858, 1.9905102406057975, 2.412178783992351, 1.8449117385432143]}}