{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:22.116400", "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": "2021-Feb-10_to_2021-Feb-16_198.0_52.5"}, "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": 2021020001693}, "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": "February 10 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 16 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 113850.97922957825}, "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", "Gulf of Alaska", "North 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": 52.5}, "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": 198.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "198.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 193.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 201.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-164.53, 54.47], [-164.75, 55.0], [-164.53, 55.53], [-164.0, 55.75], [-163.47, 55.53], [-163.25, 55.0], [-163.47, 54.47], [-164.0, 54.25], [-164.53, 54.47]]], [[[-163.25, 55.5], [-163.03, 56.03], [-162.5, 56.25], [-162.25, 56.15], [-162.0, 56.25], [-161.75, 56.15], [-161.5, 56.25], [-160.97, 56.03], [-160.75, 55.5], [-160.97, 54.97], [-161.5, 54.75], [-161.75, 54.85], [-162.0, 54.75], [-162.25, 54.85], [-162.5, 54.75], [-163.03, 54.97], [-163.25, 55.5]]]]}, "2021-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-164.53, 54.47], [-164.75, 55.0], [-164.53, 55.53], [-164.0, 55.75], [-163.47, 55.53], [-163.25, 55.0], [-163.47, 54.47], [-164.0, 54.25], [-164.53, 54.47]]], [[[-163.25, 55.5], [-163.03, 56.03], [-162.5, 56.25], [-162.25, 56.15], [-162.0, 56.25], [-161.75, 56.15], [-161.5, 56.25], [-160.97, 56.03], [-160.75, 55.5], [-160.97, 54.97], [-161.5, 54.75], [-161.75, 54.85], [-162.0, 54.75], [-162.25, 54.85], [-162.5, 54.75], [-163.03, 54.97], [-163.25, 55.5]]]]}, "2021-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-166.75, 56.5], [-166.53, 57.03], [-166.0, 57.25], [-165.47, 57.03], [-165.32, 56.68], [-165.25, 56.65], [-165.0, 56.75], [-164.75, 56.65], [-164.5, 56.75], [-163.97, 56.53], [-163.82, 56.18], [-163.75, 56.15], [-163.5, 56.25], [-163.25, 56.15], [-163.0, 56.25], [-162.75, 56.15], [-162.5, 56.25], [-162.25, 56.15], [-162.0, 56.25], [-161.75, 56.15], [-161.5, 56.25], [-160.97, 56.03], [-160.75, 55.5], [-160.97, 54.97], [-161.32, 54.82], [-161.47, 54.47], [-162.0, 54.25], [-162.25, 54.35], [-162.5, 54.25], [-162.8, 54.38], [-162.97, 53.97], [-163.32, 53.82], [-163.43, 53.57], [-163.0, 53.75], [-162.75, 53.65], [-162.5, 53.75], [-162.25, 53.65], [-162.0, 53.75], [-161.47, 53.53], [-161.25, 53.0], [-161.35, 52.75], [-161.25, 52.5], [-161.47, 51.97], [-162.0, 51.75], [-162.25, 51.85], [-162.5, 51.75], [-163.03, 51.97], [-163.18, 52.32], [-163.53, 52.47], [-163.75, 53.0], [-163.57, 53.43], [-164.0, 53.25], [-164.53, 53.47], [-164.68, 53.82], [-165.03, 53.97], [-165.25, 54.5], [-165.12, 54.8], [-165.25, 54.85], [-165.5, 54.75], [-165.75, 54.85], [-166.0, 54.75], [-166.25, 54.85], [-166.5, 54.75], [-167.03, 54.97], [-167.25, 55.5], [-167.03, 56.03], [-166.68, 56.18], [-166.65, 56.25], [-166.75, 56.5]]]]}, "2021-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-167.03, 56.53], [-166.68, 56.68], [-166.53, 57.03], [-166.0, 57.25], [-165.47, 57.03], [-165.32, 56.68], [-165.25, 56.65], [-165.0, 56.75], [-164.75, 56.65], [-164.5, 56.75], [-163.97, 56.53], [-163.82, 56.18], [-163.75, 56.15], [-163.5, 56.25], [-163.25, 56.15], [-163.0, 56.25], [-162.75, 56.15], [-162.5, 56.25], [-162.25, 56.15], [-162.0, 56.25], [-161.75, 56.15], [-161.5, 56.25], [-160.97, 56.03], [-160.75, 55.5], [-160.97, 54.97], [-161.32, 54.82], [-161.47, 54.47], [-162.0, 54.25], [-162.25, 54.35], [-162.5, 54.25], [-162.8, 54.38], [-162.97, 53.97], [-163.32, 53.82], [-163.43, 53.57], [-163.0, 53.75], [-162.75, 53.65], [-162.5, 53.75], [-162.25, 53.65], [-162.0, 53.75], [-161.47, 53.53], [-161.25, 53.0], [-161.35, 52.75], [-161.25, 52.5], [-161.47, 51.97], [-162.0, 51.75], [-162.25, 51.85], [-162.5, 51.75], [-163.03, 51.97], [-163.18, 52.32], [-163.53, 52.47], [-163.75, 53.0], [-163.57, 53.43], [-164.0, 53.25], [-164.53, 53.47], [-164.68, 53.82], [-165.03, 53.97], [-165.25, 54.5], [-165.12, 54.8], [-165.25, 54.85], [-165.5, 54.75], [-165.75, 54.85], [-166.0, 54.75], [-166.25, 54.85], [-166.5, 54.75], [-167.03, 54.97], [-167.25, 55.5], [-167.15, 55.75], [-167.25, 56.0], [-167.03, 56.53]]]]}, "2021-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-167.03, 56.53], [-166.68, 56.68], [-166.53, 57.03], [-166.0, 57.25], [-165.47, 57.03], [-165.32, 56.68], [-165.25, 56.65], [-165.0, 56.75], [-164.75, 56.65], [-164.5, 56.75], [-163.97, 56.53], [-163.82, 56.18], [-163.75, 56.15], [-163.5, 56.25], [-163.25, 56.15], [-163.0, 56.25], [-162.75, 56.15], [-162.5, 56.25], [-161.97, 56.03], [-161.82, 55.68], [-161.75, 55.65], [-161.5, 55.75], [-161.25, 55.65], [-161.0, 55.75], [-160.47, 55.53], [-160.32, 55.18], [-159.97, 55.03], [-159.82, 54.68], [-159.47, 54.53], [-159.25, 54.0], [-159.35, 53.75], [-159.32, 53.68], [-159.25, 53.65], [-159.0, 53.75], [-158.47, 53.53], [-158.25, 53.0], [-158.35, 52.75], [-158.25, 52.5], [-158.47, 51.97], [-159.0, 51.75], [-159.25, 51.85], [-159.5, 51.75], [-159.75, 51.85], [-160.0, 51.75], [-160.25, 51.85], [-160.5, 51.75], [-160.75, 51.85], [-161.0, 51.75], [-161.25, 51.85], [-161.5, 51.75], [-161.75, 51.85], [-162.0, 51.75], [-162.25, 51.85], [-162.5, 51.75], [-163.03, 51.97], [-163.18, 52.32], [-163.53, 52.47], [-163.75, 53.0], [-163.65, 53.25], [-163.68, 53.32], [-163.75, 53.35], [-164.0, 53.25], [-164.53, 53.47], [-164.68, 53.82], [-165.03, 53.97], [-165.25, 54.5], [-165.12, 54.8], [-165.25, 54.85], [-165.5, 54.75], [-165.75, 54.85], [-166.0, 54.75], [-166.25, 54.85], [-166.5, 54.75], [-167.03, 54.97], [-167.25, 55.5], [-167.15, 55.75], [-167.25, 56.0], [-167.03, 56.53]]]]}, "2021-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-164.75, 54.0], [-164.53, 54.53], [-164.0, 54.75], [-163.75, 54.65], [-163.68, 54.68], [-163.53, 55.03], [-163.0, 55.25], [-162.75, 55.15], [-162.5, 55.25], [-162.25, 55.15], [-162.18, 55.18], [-162.03, 55.53], [-161.5, 55.75], [-161.25, 55.65], [-161.0, 55.75], [-160.47, 55.53], [-160.32, 55.18], [-159.97, 55.03], [-159.82, 54.68], [-159.47, 54.53], [-159.25, 54.0], [-159.35, 53.75], [-159.32, 53.68], [-159.25, 53.65], [-159.0, 53.75], [-158.47, 53.53], [-158.25, 53.0], [-158.35, 52.75], [-158.25, 52.5], [-158.47, 51.97], [-159.0, 51.75], [-159.25, 51.85], [-159.5, 51.75], [-159.75, 51.85], [-160.0, 51.75], [-160.25, 51.85], [-160.5, 51.75], [-160.75, 51.85], [-161.0, 51.75], [-161.25, 51.85], [-161.5, 51.75], [-161.75, 51.85], [-162.0, 51.75], [-162.25, 51.85], [-162.5, 51.75], [-163.03, 51.97], [-163.18, 52.32], [-163.53, 52.47], [-163.75, 53.0], [-163.65, 53.25], [-163.68, 53.32], [-163.75, 53.35], [-164.0, 53.25], [-164.53, 53.47], [-164.75, 54.0]]], [[[-166.68, 56.68], [-166.53, 57.03], [-166.0, 57.25], [-165.47, 57.03], [-165.32, 56.68], [-165.25, 56.65], [-165.0, 56.75], [-164.75, 56.65], [-164.5, 56.75], [-163.97, 56.53], [-163.75, 56.0], [-163.97, 55.47], [-164.32, 55.32], [-164.47, 54.97], [-165.0, 54.75], [-165.25, 54.85], [-165.5, 54.75], [-165.75, 54.85], [-166.0, 54.75], [-166.25, 54.85], [-166.5, 54.75], [-167.03, 54.97], [-167.25, 55.5], [-167.15, 55.75], [-167.25, 56.0], [-167.03, 56.53], [-166.68, 56.68]]]]}, "2021-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-164.75, 54.0], [-164.53, 54.53], [-164.0, 54.75], [-163.75, 54.65], [-163.68, 54.68], [-163.53, 55.03], [-163.0, 55.25], [-162.75, 55.15], [-162.5, 55.25], [-162.25, 55.15], [-162.18, 55.18], [-162.03, 55.53], [-161.5, 55.75], [-161.25, 55.65], [-161.0, 55.75], [-160.47, 55.53], [-160.32, 55.18], [-159.97, 55.03], [-159.82, 54.68], [-159.47, 54.53], [-159.25, 54.0], [-159.35, 53.75], [-159.32, 53.68], [-159.25, 53.65], [-159.0, 53.75], [-158.47, 53.53], [-158.25, 53.0], [-158.35, 52.75], [-158.25, 52.5], [-158.47, 51.97], [-159.0, 51.75], [-159.25, 51.85], [-159.5, 51.75], [-159.75, 51.85], [-160.0, 51.75], [-160.25, 51.85], [-160.5, 51.75], [-160.75, 51.85], [-161.0, 51.75], [-161.25, 51.85], [-161.5, 51.75], [-161.75, 51.85], [-162.0, 51.75], [-162.25, 51.85], [-162.5, 51.75], [-163.03, 51.97], [-163.18, 52.32], [-163.53, 52.47], [-163.75, 53.0], [-163.65, 53.25], [-163.68, 53.32], [-163.75, 53.35], [-164.0, 53.25], [-164.53, 53.47], [-164.75, 54.0]]], [[[-166.68, 56.68], [-166.53, 57.03], [-166.0, 57.25], [-165.47, 57.03], [-165.32, 56.68], [-165.25, 56.65], [-165.0, 56.75], [-164.75, 56.65], [-164.5, 56.75], [-163.97, 56.53], [-163.75, 56.0], [-163.97, 55.47], [-164.32, 55.32], [-164.47, 54.97], [-165.0, 54.75], [-165.5, 54.96], [-166.0, 54.75], [-166.25, 54.85], [-166.5, 54.75], [-167.03, 54.97], [-167.25, 55.5], [-167.15, 55.75], [-167.25, 56.0], [-167.03, 56.53], [-166.68, 56.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.114609267376295}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.8588083122109085}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.1745678888216275, 1.9665638668737415, 3.6203730195177855, 3.638088200140544, 4.156325419344455, 4.312222558604162, 4.446224155937159]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.7086977793259734, 2.4200919913507164, 4.781001557410775, 4.479180732204156, 4.789767310750165, 4.642476091760443, 4.796408032976899]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.587465881105501, 4.295948827583189, 3.4091191295972654, 3.3864766311913366, 2.6293467142137272, 2.522011495923625, 2.631769035661532]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.96813975393178, 4.743527330753352, 5.114609267376295, 4.630975950871061, 3.9028323154336704, 4.470893631407478, 4.390649440298148]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.0908189435330455, 1.04402581835404, 1.062807075937347, 1.0626909377610099, 1.0307043059730658, 1.0304954499790913, 1.0968549414138813]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2123648829261795, 1.0745880268709327, 1.2129002140503977, 1.2931590137090037, 1.146201433920229, 1.138322613014515, 1.2316706125715426]}}