{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:49.185642", "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": "2020-Dec-28_to_2020-Dec-30_189.5_64.5"}, "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": 2020120002845}, "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 28 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 30 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 58357.32535359182}, "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.Pacific-Ocean", "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"]}, "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": 64.5}, "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": 189.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "189.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 186.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 194.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 61.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 65.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.75, 63.5], [-173.53, 64.03], [-173.0, 64.25], [-172.7, 64.13], [-172.53, 64.53], [-172.0, 64.75], [-171.75, 64.65], [-171.5, 64.75], [-171.25, 64.65], [-171.18, 64.68], [-171.03, 65.03], [-170.5, 65.25], [-170.25, 65.15], [-170.18, 65.18], [-170.03, 65.53], [-169.5, 65.75], [-168.97, 65.53], [-168.82, 65.18], [-168.47, 65.03], [-168.25, 64.5], [-168.37, 64.2], [-168.25, 64.15], [-168.0, 64.25], [-167.75, 64.15], [-167.5, 64.25], [-166.97, 64.03], [-166.82, 63.68], [-166.75, 63.65], [-166.5, 63.75], [-166.25, 63.65], [-166.0, 63.75], [-165.75, 63.65], [-165.5, 63.75], [-164.97, 63.53], [-164.75, 63.0], [-164.97, 62.47], [-165.32, 62.32], [-165.35, 62.25], [-165.25, 62.0], [-165.47, 61.47], [-166.0, 61.25], [-166.25, 61.35], [-166.5, 61.25], [-166.75, 61.35], [-167.0, 61.25], [-167.53, 61.47], [-167.68, 61.82], [-167.75, 61.85], [-168.0, 61.75], [-168.53, 61.97], [-168.68, 62.32], [-168.75, 62.35], [-169.0, 62.25], [-169.25, 62.35], [-169.5, 62.25], [-169.75, 62.35], [-170.0, 62.25], [-170.53, 62.47], [-170.68, 62.82], [-170.75, 62.85], [-170.82, 62.82], [-170.97, 62.47], [-171.5, 62.25], [-171.75, 62.35], [-171.82, 62.32], [-171.97, 61.97], [-172.5, 61.75], [-173.03, 61.97], [-173.25, 62.5], [-173.15, 62.75], [-173.18, 62.82], [-173.53, 62.97], [-173.75, 63.5]]]]}, "2020-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.75, 63.5], [-173.53, 64.03], [-173.0, 64.25], [-172.7, 64.13], [-172.53, 64.53], [-172.0, 64.75], [-171.75, 64.65], [-171.5, 64.75], [-171.25, 64.65], [-171.18, 64.68], [-171.03, 65.03], [-170.5, 65.25], [-170.25, 65.15], [-170.18, 65.18], [-170.03, 65.53], [-169.5, 65.75], [-168.97, 65.53], [-168.82, 65.18], [-168.47, 65.03], [-168.25, 64.5], [-168.37, 64.2], [-168.25, 64.15], [-168.0, 64.25], [-167.75, 64.15], [-167.5, 64.25], [-166.97, 64.03], [-166.82, 63.68], [-166.75, 63.65], [-166.5, 63.75], [-166.25, 63.65], [-166.0, 63.75], [-165.75, 63.65], [-165.5, 63.75], [-164.97, 63.53], [-164.75, 63.0], [-164.97, 62.47], [-165.32, 62.32], [-165.35, 62.25], [-165.25, 62.0], [-165.47, 61.47], [-166.0, 61.25], [-166.25, 61.35], [-166.5, 61.25], [-166.75, 61.35], [-167.0, 61.25], [-167.53, 61.47], [-167.68, 61.82], [-167.75, 61.85], [-168.0, 61.75], [-168.53, 61.97], [-168.68, 62.32], [-168.75, 62.35], [-169.0, 62.25], [-169.25, 62.35], [-169.5, 62.25], [-169.75, 62.35], [-170.0, 62.25], [-170.53, 62.47], [-170.68, 62.82], [-170.75, 62.85], [-170.82, 62.82], [-170.97, 62.47], [-171.5, 62.25], [-171.75, 62.35], [-171.82, 62.32], [-171.97, 61.97], [-172.5, 61.75], [-173.03, 61.97], [-173.25, 62.5], [-173.15, 62.75], [-173.18, 62.82], [-173.53, 62.97], [-173.75, 63.5]]]]}, "2020-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.75, 63.5], [-173.53, 64.03], [-173.0, 64.25], [-172.7, 64.13], [-172.53, 64.53], [-172.0, 64.75], [-171.75, 64.65], [-171.5, 64.75], [-171.25, 64.65], [-171.18, 64.68], [-171.03, 65.03], [-170.5, 65.25], [-170.25, 65.15], [-170.18, 65.18], [-170.03, 65.53], [-169.5, 65.75], [-168.97, 65.53], [-168.82, 65.18], 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"Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.821240082292888}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.96690531427786}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.2254746430260184, -0.9565811206767307, -1.3251357198146252]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.0345255481582285, 0.10107813151427081, -0.41571830247852404]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.916847083466568, 10.183490126607014, 9.800378732760006]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.981987281658746, 11.821240082292888, 11.54152082392693]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4629944634277665, 1.4915153604162175, 1.4324597177028269]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6183546827676356, 1.6624648008724268, 1.6460422585880783]}}