{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:42.712848", "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": "2011-Jan-29_to_2011-Feb-01_192.0_70.5"}, "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": 2011010002673}, "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 29 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 01 2011"}, "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": 122752.99820952519}, "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", "Russian-Arctic"]}, "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": ["Arctic Ocean", "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": 70.5}, "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": 192.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "192.0\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": 200.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 68.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 72.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.53, 70.03], [-173.0, 70.25], [-172.75, 70.15], [-172.68, 70.18], [-172.65, 70.25], [-172.75, 70.5], [-172.53, 71.03], [-172.0, 71.25], [-171.75, 71.15], [-171.5, 71.25], [-171.25, 71.15], [-171.0, 71.25], [-170.75, 71.15], [-170.5, 71.25], [-170.25, 71.15], [-170.0, 71.25], [-169.75, 71.15], [-169.5, 71.25], [-169.25, 71.15], [-169.0, 71.25], [-168.75, 71.15], [-168.5, 71.25], [-168.25, 71.15], [-168.0, 71.25], [-167.75, 71.15], [-167.5, 71.25], [-167.25, 71.15], [-167.0, 71.25], [-166.75, 71.15], [-166.5, 71.25], [-165.97, 71.03], [-165.75, 70.5], [-165.97, 69.97], [-166.5, 69.75], [-166.25, 69.65], [-166.0, 69.75], [-165.75, 69.65], [-165.5, 69.75], [-165.0, 69.54], [-164.5, 69.75], [-164.25, 69.65], [-164.18, 69.68], [-164.03, 70.03], [-163.5, 70.25], [-163.25, 70.15], [-163.0, 70.25], [-162.75, 70.15], [-162.5, 70.25], [-162.25, 70.15], [-162.0, 70.25], [-161.75, 70.15], [-161.5, 70.25], [-161.25, 70.15], [-161.0, 70.25], [-160.75, 70.15], [-160.5, 70.25], [-160.25, 70.15], [-160.0, 70.25], [-159.75, 70.15], [-159.5, 70.25], [-158.97, 70.03], [-158.75, 69.5], [-158.85, 69.25], [-158.75, 69.0], [-158.97, 68.47], [-159.5, 68.25], [-159.75, 68.35], [-160.0, 68.25], [-160.25, 68.35], [-160.5, 68.25], [-160.75, 68.35], [-161.0, 68.25], [-161.25, 68.35], [-161.5, 68.25], [-161.75, 68.35], [-162.0, 68.25], [-162.25, 68.35], [-162.5, 68.25], [-162.75, 68.35], [-162.82, 68.32], [-162.97, 67.97], [-163.5, 67.75], [-163.75, 67.85], [-164.0, 67.75], [-164.25, 67.85], [-164.5, 67.75], [-164.75, 67.85], [-165.0, 67.75], [-165.25, 67.85], [-165.5, 67.75], [-165.75, 67.85], [-166.0, 67.75], [-166.25, 67.85], [-166.5, 67.75], [-166.75, 67.85], [-167.0, 67.75], [-167.53, 67.97], [-167.68, 68.32], [-167.75, 68.35], [-168.0, 68.25], [-168.25, 68.35], [-168.5, 68.25], [-168.75, 68.35], [-169.0, 68.25], [-169.25, 68.35], [-169.5, 68.25], [-169.75, 68.35], [-170.0, 68.25], [-170.25, 68.35], [-170.32, 68.32], [-170.47, 67.97], [-171.0, 67.75], [-171.25, 67.85], [-171.5, 67.75], [-171.75, 67.85], [-172.0, 67.75], [-172.53, 67.97], [-172.68, 68.32], [-172.75, 68.35], [-173.0, 68.25], [-173.53, 68.47], [-173.75, 69.0], [-173.65, 69.25], [-173.75, 69.5], [-173.53, 70.03]], [[-166.75, 69.85], [-166.82, 69.82], [-166.87, 69.7], [-166.75, 69.65], [-166.5, 69.75], [-166.75, 69.85]]]]}, "2011-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.53, 70.03], [-173.0, 70.25], [-172.75, 70.15], [-172.68, 70.18], [-172.65, 70.25], [-172.75, 70.5], [-172.53, 71.03], [-172.18, 71.18], [-172.03, 71.53], [-171.5, 71.75], [-171.25, 71.65], [-171.0, 71.75], [-170.75, 71.65], [-170.5, 71.75], [-171.03, 71.97], [-171.25, 72.5], [-171.03, 73.03], [-170.5, 73.25], [-170.25, 73.15], [-170.0, 73.25], [-169.75, 73.15], [-169.5, 73.25], [-168.97, 73.03], [-168.82, 72.68], [-168.75, 72.65], [-168.5, 72.75], [-167.97, 72.53], [-167.75, 72.0], [-167.85, 71.75], [-167.82, 71.68], [-167.75, 71.65], [-167.5, 71.75], [-167.25, 71.65], [-167.0, 71.75], [-166.75, 71.65], [-166.5, 71.75], [-166.25, 71.65], [-166.0, 71.75], [-165.47, 71.53], [-165.25, 71.0], [-165.37, 70.7], [-165.25, 70.65], [-165.0, 70.75], [-164.75, 70.65], [-164.5, 70.75], [-164.25, 70.65], [-164.0, 70.75], [-163.47, 70.53], [-163.32, 70.18], [-163.25, 70.15], [-163.0, 70.25], [-162.75, 70.15], [-162.5, 70.25], [-162.25, 70.15], [-162.0, 70.25], [-161.75, 70.15], [-161.5, 70.25], [-161.25, 70.15], [-161.0, 70.25], [-160.75, 70.15], [-160.5, 70.25], [-160.25, 70.15], [-160.0, 70.25], [-159.75, 70.15], [-159.5, 70.25], [-158.97, 70.03], [-158.75, 69.5], [-158.85, 69.25], [-158.75, 69.0], [-158.97, 68.47], [-159.5, 68.25], [-159.75, 68.35], [-160.0, 68.25], [-160.25, 68.35], [-160.5, 68.25], [-160.75, 68.35], [-161.0, 68.25], [-161.25, 68.35], [-161.5, 68.25], [-161.75, 68.35], [-162.0, 68.25], [-162.25, 68.35], [-162.5, 68.25], [-162.75, 68.35], [-162.82, 68.32], [-162.97, 67.97], [-163.5, 67.75], [-163.75, 67.85], [-164.0, 67.75], [-164.25, 67.85], [-164.5, 67.75], [-164.75, 67.85], [-165.0, 67.75], [-165.25, 67.85], [-165.5, 67.75], [-165.75, 67.85], [-166.0, 67.75], [-166.25, 67.85], [-166.5, 67.75], [-166.75, 67.85], [-167.0, 67.75], [-167.53, 67.97], [-167.68, 68.32], [-167.75, 68.35], [-168.0, 68.25], [-168.25, 68.35], [-168.5, 68.25], [-168.75, 68.35], [-169.0, 68.25], [-169.25, 68.35], [-169.5, 68.25], [-169.75, 68.35], [-170.0, 68.25], [-170.25, 68.35], [-170.32, 68.32], [-170.47, 67.97], [-171.0, 67.75], [-171.25, 67.85], [-171.5, 67.75], [-171.75, 67.85], [-172.0, 67.75], [-172.53, 67.97], [-172.68, 68.32], [-172.75, 68.35], [-173.0, 68.25], [-173.53, 68.47], [-173.75, 69.0], [-173.65, 69.25], [-173.75, 69.5], [-173.53, 70.03]], [[-170.25, 71.65], [-170.12, 71.7], [-170.18, 71.82], [-170.25, 71.85], [-170.5, 71.75], [-170.25, 71.65]]]]}, "2011-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.53, 70.03], [-173.0, 70.25], [-172.75, 70.15], [-172.68, 70.18], [-172.65, 70.25], [-172.75, 70.5], [-172.53, 71.03], [-172.18, 71.18], [-172.03, 71.53], [-171.5, 71.75], [-171.25, 71.65], [-171.0, 71.75], [-170.75, 71.65], [-170.5, 71.75], [-171.03, 71.97], [-171.25, 72.5], [-171.03, 73.03], [-170.5, 73.25], [-170.25, 73.15], [-170.0, 73.25], [-169.75, 73.15], [-169.5, 73.25], [-168.97, 73.03], [-168.82, 72.68], [-168.75, 72.65], [-168.5, 72.75], [-167.97, 72.53], [-167.75, 72.0], [-167.85, 71.75], [-167.82, 71.68], [-167.75, 71.65], [-167.5, 71.75], [-167.25, 71.65], [-167.0, 71.75], [-166.75, 71.65], [-166.5, 71.75], [-166.25, 71.65], [-166.0, 71.75], [-165.47, 71.53], [-165.25, 71.0], [-165.37, 70.7], [-165.25, 70.65], [-165.0, 70.75], [-164.75, 70.65], [-164.5, 70.75], [-164.25, 70.65], [-164.0, 70.75], [-163.47, 70.53], [-163.32, 70.18], [-163.25, 70.15], [-163.0, 70.25], [-162.75, 70.15], [-162.5, 70.25], [-162.25, 70.15], [-162.0, 70.25], [-161.75, 70.15], [-161.5, 70.25], [-161.25, 70.15], [-161.0, 70.25], [-160.75, 70.15], [-160.5, 70.25], [-160.25, 70.15], [-160.0, 70.25], [-159.75, 70.15], [-159.5, 70.25], [-158.97, 70.03], [-158.75, 69.5], [-158.85, 69.25], [-158.75, 69.0], [-158.97, 68.47], [-159.5, 68.25], [-159.75, 68.35], [-160.0, 68.25], [-160.25, 68.35], [-160.5, 68.25], [-160.75, 68.35], [-161.0, 68.25], [-161.25, 68.35], [-161.5, 68.25], [-161.75, 68.35], [-162.0, 68.25], [-162.25, 68.35], [-162.5, 68.25], [-162.75, 68.35], [-162.82, 68.32], [-162.97, 67.97], [-163.5, 67.75], [-163.75, 67.85], [-164.0, 67.75], [-164.25, 67.85], [-164.5, 67.75], [-164.75, 67.85], [-165.0, 67.75], [-165.25, 67.85], [-165.5, 67.75], [-165.75, 67.85], [-166.0, 67.75], [-166.25, 67.85], [-166.5, 67.75], [-166.75, 67.85], [-167.0, 67.75], [-167.53, 67.97], [-167.68, 68.32], [-167.75, 68.35], [-168.0, 68.25], [-168.25, 68.35], [-168.5, 68.25], [-168.75, 68.35], [-169.0, 68.25], [-169.25, 68.35], [-169.5, 68.25], [-169.75, 68.35], [-170.0, 68.25], [-170.25, 68.35], [-170.32, 68.32], [-170.47, 67.97], [-171.0, 67.75], [-171.25, 67.85], [-171.5, 67.75], [-171.75, 67.85], [-172.0, 67.75], [-172.53, 67.97], [-172.68, 68.32], [-172.75, 68.35], [-173.0, 68.25], [-173.53, 68.47], [-173.75, 69.0], [-173.65, 69.25], [-173.75, 69.5], [-173.53, 70.03]], [[-170.25, 71.65], [-170.12, 71.7], [-170.18, 71.82], [-170.25, 71.85], [-170.5, 71.75], [-170.25, 71.65]]]]}, "2011-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-172.53, 71.03], [-172.18, 71.18], [-172.03, 71.53], [-171.5, 71.75], [-171.25, 71.65], [-171.0, 71.75], [-170.75, 71.65], [-170.5, 71.75], [-171.03, 71.97], [-171.25, 72.5], [-171.03, 73.03], [-170.5, 73.25], [-170.25, 73.15], [-170.0, 73.25], [-169.75, 73.15], [-169.5, 73.25], [-168.97, 73.03], [-168.82, 72.68], [-168.75, 72.65], [-168.5, 72.75], [-167.97, 72.53], [-167.75, 72.0], [-167.85, 71.75], [-167.82, 71.68], [-167.75, 71.65], [-167.5, 71.75], [-167.25, 71.65], [-167.0, 71.75], [-166.75, 71.65], [-166.5, 71.75], [-166.25, 71.65], [-166.0, 71.75], [-165.47, 71.53], [-165.25, 71.0], [-165.37, 70.7], [-165.25, 70.65], [-165.0, 70.75], [-164.75, 70.65], [-164.5, 70.75], [-164.25, 70.65], [-164.0, 70.75], [-163.47, 70.53], [-163.32, 70.18], [-162.97, 70.03], [-162.75, 69.5], [-162.85, 69.25], [-162.75, 69.0], [-162.97, 68.47], [-163.5, 68.25], [-163.75, 68.35], [-164.0, 68.25], [-164.25, 68.35], [-164.5, 68.25], [-164.75, 68.35], [-165.0, 68.25], [-165.53, 68.47], [-165.68, 68.82], [-165.75, 68.85], [-166.0, 68.75], [-166.25, 68.85], [-166.32, 68.82], [-166.47, 68.47], [-167.0, 68.25], [-167.25, 68.35], [-167.5, 68.25], [-167.75, 68.35], [-168.0, 68.25], [-168.53, 68.47], [-168.68, 68.82], [-168.75, 68.85], [-169.0, 68.75], [-169.25, 68.85], [-169.5, 68.75], [-170.03, 68.97], [-170.18, 69.32], [-170.25, 69.35], [-170.5, 69.25], [-170.75, 69.35], [-171.0, 69.25], [-171.25, 69.35], [-171.5, 69.25], [-171.75, 69.35], [-172.0, 69.25], [-172.53, 69.47], [-172.75, 70.0], [-172.65, 70.25], [-172.75, 70.5], [-172.53, 71.03]], [[-170.25, 71.65], [-170.12, 71.7], [-170.18, 71.82], [-170.25, 71.85], [-170.5, 71.75], [-170.25, 71.65]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 21.29142656811692}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 14.43085962586813}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-9.540108194665208, -6.642239533348516, -7.105920834236656, -8.240809779026506]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-5.859534790941041, -4.402797664618902, -4.525840933023517, -6.670681935125856]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [12.938531534455972, 15.555965758746089, 14.965834994713752, 13.379048958438071]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [19.713363777310065, 21.29142656811692, 20.7867895916975, 17.80268256096079]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6230688343960882, 1.971666359590911, 1.8093521804388186, 1.7399721555815182]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8362298067310976, 2.2619369113109795, 2.067380010622835, 1.899164341388981]}}