{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:16.607501", "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": "2022-Sep-17_to_2022-Sep-22_198.5_71.0"}, "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": 2022090002244}, "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": "September 17 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 77560.25951558835}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 71.0}, "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": 198.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "198.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 190.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 201.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 70.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 73.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-162.0, 69.25], [-162.53, 69.47], [-162.68, 69.82], [-162.75, 69.85], [-163.0, 69.75], [-163.25, 69.85], [-163.5, 69.75], [-163.75, 69.85], [-164.0, 69.75], [-164.25, 69.85], [-164.5, 69.75], [-164.75, 69.85], [-165.0, 69.75], [-165.25, 69.85], [-165.5, 69.75], [-165.75, 69.85], [-166.0, 69.75], [-166.53, 69.97], [-166.68, 70.32], [-167.03, 70.47], [-167.18, 70.82], [-167.25, 70.85], [-167.5, 70.75], [-168.03, 70.97], [-168.18, 71.32], [-168.53, 71.47], [-168.68, 71.82], [-168.75, 71.85], [-169.0, 71.75], [-169.25, 71.85], [-169.5, 71.75], [-170.03, 71.97], [-170.25, 72.5], [-170.03, 73.03], [-169.68, 73.18], [-169.53, 73.53], [-169.0, 73.75], [-168.47, 73.53], [-168.32, 73.18], [-168.25, 73.15], [-168.0, 73.25], [-167.75, 73.15], [-167.68, 73.18], [-167.53, 73.53], [-167.0, 73.75], [-166.75, 73.65], [-166.5, 73.75], [-166.25, 73.65], [-166.0, 73.75], [-165.75, 73.65], [-165.5, 73.75], [-165.25, 73.65], [-165.0, 73.75], [-164.75, 73.65], [-164.5, 73.75], [-164.25, 73.65], [-164.0, 73.75], [-163.75, 73.65], [-163.5, 73.75], [-163.25, 73.65], [-163.0, 73.75], [-162.75, 73.65], [-162.5, 73.75], [-161.97, 73.53], [-161.82, 73.18], [-161.75, 73.15], [-161.5, 73.25], [-161.25, 73.15], [-161.0, 73.25], [-160.75, 73.15], [-160.5, 73.25], [-160.25, 73.15], [-160.0, 73.25], [-159.75, 73.15], [-159.5, 73.25], [-158.97, 73.03], [-158.82, 72.68], [-158.47, 72.53], [-158.25, 72.0], [-158.46, 71.5], [-158.25, 71.0], [-158.47, 70.47], [-159.0, 70.25], [-159.25, 70.35], [-159.5, 70.25], [-159.75, 70.35], [-159.82, 70.32], [-159.97, 69.97], [-160.5, 69.75], [-160.75, 69.85], [-161.0, 69.75], [-161.25, 69.85], [-161.32, 69.82], [-161.47, 69.47], [-162.0, 69.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "Russian-Arctic", "Arctic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-162.53, 70.53], [-162.0, 70.75], [-161.47, 70.53], [-161.25, 70.0], [-161.47, 69.47], [-162.0, 69.25], [-162.53, 69.47], [-162.75, 70.0], [-162.53, 70.53]]]]}, "2022-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-167.03, 70.47], [-167.25, 71.0], [-167.03, 71.53], [-166.5, 71.75], [-166.25, 71.65], [-166.0, 71.75], [-165.75, 71.65], [-165.5, 71.75], [-165.25, 71.65], [-165.0, 71.75], [-164.75, 71.65], [-164.5, 71.75], [-164.25, 71.65], [-164.0, 71.75], [-163.75, 71.65], [-163.5, 71.75], [-163.25, 71.65], [-163.0, 71.75], [-162.75, 71.65], [-162.5, 71.75], [-162.25, 71.65], [-162.0, 71.75], [-161.75, 71.65], [-161.5, 71.75], [-161.25, 71.65], [-161.0, 71.75], [-160.75, 71.65], [-160.5, 71.75], [-160.25, 71.65], [-160.0, 71.75], [-159.75, 71.65], [-159.5, 71.75], [-159.25, 71.65], [-159.0, 71.75], [-158.47, 71.53], [-158.25, 71.0], [-158.47, 70.47], [-159.0, 70.25], [-159.25, 70.35], [-159.5, 70.25], [-159.75, 70.35], [-159.82, 70.32], [-159.97, 69.97], [-160.5, 69.75], [-160.75, 69.85], [-161.0, 69.75], [-161.25, 69.85], [-161.32, 69.82], [-161.47, 69.47], [-162.0, 69.25], [-162.53, 69.47], [-162.68, 69.82], [-162.75, 69.85], [-163.0, 69.75], [-163.25, 69.85], [-163.5, 69.75], [-163.75, 69.85], [-164.0, 69.75], [-164.25, 69.85], [-164.5, 69.75], [-164.75, 69.85], [-165.0, 69.75], [-165.25, 69.85], [-165.5, 69.75], [-165.75, 69.85], [-166.0, 69.75], [-166.53, 69.97], [-166.68, 70.32], [-167.03, 70.47]]]]}, "2022-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-167.25, 71.5], [-167.03, 72.03], [-166.5, 72.25], [-166.25, 72.15], [-166.0, 72.25], [-165.75, 72.15], [-165.5, 72.25], [-165.25, 72.15], [-165.0, 72.25], [-164.75, 72.15], [-164.5, 72.25], [-164.25, 72.15], [-164.0, 72.25], [-163.75, 72.15], [-163.5, 72.25], [-163.25, 72.15], [-163.0, 72.25], [-162.75, 72.15], [-162.5, 72.25], [-162.25, 72.15], [-162.0, 72.25], [-161.75, 72.15], [-161.68, 72.18], [-161.53, 72.53], [-161.0, 72.75], [-160.75, 72.65], [-160.68, 72.68], [-160.53, 73.03], [-160.0, 73.25], [-159.75, 73.15], [-159.5, 73.25], [-158.97, 73.03], [-158.82, 72.68], [-158.47, 72.53], [-158.25, 72.0], [-158.46, 71.5], [-158.25, 71.0], [-158.47, 70.47], [-159.0, 70.25], [-159.25, 70.35], [-159.5, 70.25], [-159.75, 70.35], [-159.82, 70.32], [-159.97, 69.97], [-160.5, 69.75], [-160.75, 69.85], [-161.0, 69.75], [-161.25, 69.85], [-161.32, 69.82], [-161.47, 69.47], [-162.0, 69.25], [-162.53, 69.47], [-162.68, 69.82], [-162.75, 69.85], [-163.0, 69.75], [-163.25, 69.85], [-163.5, 69.75], [-163.75, 69.85], [-164.0, 69.75], [-164.25, 69.85], [-164.5, 69.75], [-164.75, 69.85], [-165.0, 69.75], [-165.25, 69.85], [-165.5, 69.75], [-165.75, 69.85], [-166.0, 69.75], [-166.53, 69.97], [-166.68, 70.32], [-167.03, 70.47], [-167.25, 71.0], [-167.15, 71.25], [-167.25, 71.5]]]]}, "2022-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-169.53, 73.53], [-169.0, 73.75], [-168.47, 73.53], [-168.32, 73.18], [-168.25, 73.15], [-168.0, 73.25], [-167.75, 73.15], [-167.68, 73.18], [-167.53, 73.53], [-167.0, 73.75], [-166.75, 73.65], [-166.5, 73.75], [-166.25, 73.65], [-166.0, 73.75], [-165.75, 73.65], [-165.5, 73.75], [-165.25, 73.65], [-165.0, 73.75], [-164.75, 73.65], [-164.5, 73.75], [-164.25, 73.65], [-164.0, 73.75], [-163.75, 73.65], [-163.5, 73.75], [-163.25, 73.65], [-163.0, 73.75], [-162.75, 73.65], [-162.5, 73.75], [-161.97, 73.53], [-161.82, 73.18], [-161.75, 73.15], [-161.5, 73.25], [-161.25, 73.15], [-161.0, 73.25], [-160.75, 73.15], [-160.5, 73.25], [-160.25, 73.15], [-160.0, 73.25], [-159.75, 73.15], [-159.5, 73.25], [-158.97, 73.03], [-158.82, 72.68], [-158.47, 72.53], [-158.25, 72.0], [-158.46, 71.5], [-158.25, 71.0], [-158.47, 70.47], [-159.0, 70.25], [-159.25, 70.35], [-159.5, 70.25], [-159.75, 70.35], [-159.82, 70.32], [-159.97, 69.97], [-160.5, 69.75], [-160.75, 69.85], [-161.0, 69.75], [-161.25, 69.85], [-161.5, 69.75], [-161.75, 69.85], [-162.0, 69.75], [-162.25, 69.85], [-162.5, 69.75], [-162.75, 69.85], [-163.0, 69.75], [-163.25, 69.85], [-163.5, 69.75], [-163.75, 69.85], [-164.0, 69.75], [-164.25, 69.85], [-164.5, 69.75], [-164.75, 69.85], [-165.0, 69.75], [-165.25, 69.85], [-165.5, 69.75], [-165.75, 69.85], [-166.0, 69.75], [-166.53, 69.97], [-166.68, 70.32], [-167.03, 70.47], [-167.18, 70.82], [-167.25, 70.85], [-167.5, 70.75], [-168.03, 70.97], [-168.18, 71.32], [-168.53, 71.47], [-168.68, 71.82], [-168.75, 71.85], [-169.0, 71.75], [-169.25, 71.85], [-169.5, 71.75], [-170.03, 71.97], [-170.25, 72.5], [-170.03, 73.03], [-169.68, 73.18], [-169.53, 73.53]]]]}, "2022-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-169.53, 73.53], [-169.0, 73.75], [-168.47, 73.53], [-168.32, 73.18], [-168.25, 73.15], [-168.0, 73.25], [-167.75, 73.15], [-167.68, 73.18], [-167.53, 73.53], [-167.0, 73.75], [-166.75, 73.65], [-166.5, 73.75], [-166.25, 73.65], [-166.0, 73.75], [-165.75, 73.65], [-165.5, 73.75], [-165.25, 73.65], [-165.0, 73.75], [-164.75, 73.65], [-164.5, 73.75], [-164.25, 73.65], [-164.0, 73.75], [-163.75, 73.65], [-163.5, 73.75], [-163.25, 73.65], [-163.0, 73.75], [-162.75, 73.65], [-162.5, 73.75], [-161.97, 73.53], [-161.82, 73.18], [-161.75, 73.15], [-161.5, 73.25], [-161.25, 73.15], [-161.0, 73.25], [-160.75, 73.15], [-160.5, 73.25], [-160.25, 73.15], [-160.0, 73.25], [-159.75, 73.15], [-159.5, 73.25], [-158.97, 73.03], [-158.82, 72.68], [-158.47, 72.53], [-158.25, 72.0], [-158.46, 71.5], [-158.25, 71.0], [-158.47, 70.47], [-159.0, 70.25], [-159.25, 70.35], [-159.5, 70.25], [-159.75, 70.35], [-160.0, 70.25], [-160.25, 70.35], [-160.5, 70.25], [-160.75, 70.35], [-160.82, 70.32], [-160.97, 69.97], [-161.5, 69.75], [-161.75, 69.85], [-162.0, 69.75], [-162.25, 69.85], [-162.5, 69.75], [-163.03, 69.97], [-163.18, 70.32], [-163.25, 70.35], [-163.5, 70.25], [-163.75, 70.35], [-164.0, 70.25], [-164.53, 70.47], [-164.68, 70.82], [-164.75, 70.85], [-165.0, 70.75], [-165.25, 70.85], [-165.5, 70.75], [-165.75, 70.85], [-166.0, 70.75], [-166.25, 70.85], [-166.5, 70.75], [-166.75, 70.85], [-167.0, 70.75], [-167.25, 70.85], [-167.5, 70.75], [-168.03, 70.97], [-168.18, 71.32], [-168.53, 71.47], [-168.68, 71.82], [-168.75, 71.85], [-169.0, 71.75], [-169.25, 71.85], [-169.5, 71.75], [-170.03, 71.97], [-170.25, 72.5], [-170.03, 73.03], [-169.68, 73.18], [-169.53, 73.53]]]]}, "2022-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-169.53, 73.53], [-169.0, 73.75], [-168.47, 73.53], [-168.32, 73.18], [-168.25, 73.15], [-168.0, 73.25], [-167.75, 73.15], [-167.68, 73.18], [-167.53, 73.53], [-167.0, 73.75], [-166.75, 73.65], [-166.5, 73.75], [-166.25, 73.65], [-166.0, 73.75], [-165.75, 73.65], [-165.5, 73.75], [-165.25, 73.65], [-165.0, 73.75], [-164.75, 73.65], [-164.5, 73.75], [-164.25, 73.65], [-164.0, 73.75], [-163.75, 73.65], [-163.5, 73.75], [-163.25, 73.65], [-163.0, 73.75], [-162.75, 73.65], [-162.5, 73.75], [-161.97, 73.53], [-161.82, 73.18], [-161.75, 73.15], [-161.5, 73.25], [-161.25, 73.15], [-161.0, 73.25], [-160.75, 73.15], [-160.5, 73.25], [-159.97, 73.03], [-159.75, 72.5], [-159.85, 72.25], [-159.75, 72.0], [-159.85, 71.75], [-159.82, 71.68], [-159.75, 71.65], [-159.5, 71.75], [-159.25, 71.65], [-159.0, 71.75], [-158.47, 71.53], [-158.25, 71.0], [-158.47, 70.47], [-159.0, 70.25], [-159.25, 70.35], [-159.5, 70.25], [-159.75, 70.35], [-160.0, 70.25], [-160.25, 70.35], [-160.5, 70.25], [-160.75, 70.35], [-161.0, 70.25], [-161.25, 70.35], [-161.5, 70.25], [-161.75, 70.35], [-162.0, 70.25], [-162.25, 70.35], [-162.5, 70.25], [-162.75, 70.35], [-163.0, 70.25], [-163.25, 70.35], [-163.5, 70.25], [-163.75, 70.35], [-164.0, 70.25], [-164.53, 70.47], [-164.68, 70.82], [-164.75, 70.85], [-165.0, 70.75], [-165.25, 70.85], [-165.5, 70.75], [-165.75, 70.85], [-166.0, 70.75], [-166.25, 70.85], [-166.5, 70.75], [-166.75, 70.85], [-167.0, 70.75], [-167.25, 70.85], [-167.5, 70.75], [-168.03, 70.97], [-168.18, 71.32], [-168.53, 71.47], [-168.68, 71.82], [-168.75, 71.85], [-169.0, 71.75], [-169.25, 71.85], [-169.5, 71.75], [-170.03, 71.97], [-170.25, 72.5], [-170.03, 73.03], [-169.68, 73.18], [-169.53, 73.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.956509132302472}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.7773467384726342}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.092999911089407, 6.587323783430747, 5.527065084149001, 4.517516815378542, 3.9288425429635367, 3.5221715311491835]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.092999911089407, 7.823298975041155, 6.832202146078032, 6.366946771928156, 5.300403125535524, 5.240796873669979]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.626351209108066, 4.493083520942584, 4.133399281049464, 3.7571693650221363, 3.5654568041945334, 3.375121997519438]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.626351209108066, 4.956509132302472, 4.741619664905329, 4.511773139912975, 4.157481393381886, 3.967462514584895]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3443970679394883, 1.5631130331300613, 1.5096299485432432, 1.3629107215280947, 1.2980243548742858, 1.2321439789344026]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3443970679394883, 1.6833248093154194, 1.7989218132807536, 1.7389186462059973, 1.6599369951575835, 1.553734320458706]}}