{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:03.807250", "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": "2017-May-08_to_2017-May-15_292.0_58.0"}, "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": 2017050001519}, "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": "May 08 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 15 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 71455.71291045229}, "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": ["Canada"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.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": []}, "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": 58.0}, "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": 292.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "292.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 289.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 295.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.03, 59.03], [-69.5, 59.25], [-69.25, 59.15], [-69.0, 59.25], [-68.75, 59.15], [-68.5, 59.25], [-68.25, 59.15], [-68.0, 59.25], [-67.47, 59.03], [-67.25, 58.5], [-67.35, 58.25], [-67.25, 58.0], [-67.47, 57.47], [-68.0, 57.25], [-68.25, 57.35], [-68.5, 57.25], [-68.75, 57.35], [-69.0, 57.25], [-69.25, 57.35], [-69.5, 57.25], [-70.03, 57.47], [-70.25, 58.0], [-70.15, 58.25], [-70.25, 58.5], [-70.03, 59.03]]]]}, "2017-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.03, 59.03], [-69.5, 59.25], [-69.25, 59.15], [-69.0, 59.25], [-68.75, 59.15], [-68.5, 59.25], [-68.25, 59.15], [-68.0, 59.25], [-67.47, 59.03], [-67.25, 58.5], [-67.35, 58.25], [-67.25, 58.0], [-67.47, 57.47], [-68.0, 57.25], [-68.25, 57.35], [-68.5, 57.25], [-68.75, 57.35], [-69.0, 57.25], [-69.25, 57.35], [-69.5, 57.25], [-70.03, 57.47], [-70.25, 58.0], [-70.15, 58.25], [-70.25, 58.5], [-70.03, 59.03]]]]}, "2017-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.03, 59.03], [-69.5, 59.25], [-69.25, 59.15], [-69.0, 59.25], [-68.75, 59.15], [-68.5, 59.25], [-68.25, 59.15], [-68.0, 59.25], [-67.47, 59.03], [-67.25, 58.5], [-67.35, 58.25], [-67.25, 58.0], [-67.47, 57.47], [-68.0, 57.25], [-68.25, 57.35], [-68.5, 57.25], [-68.75, 57.35], [-69.0, 57.25], [-69.25, 57.35], [-69.5, 57.25], [-70.03, 57.47], [-70.25, 58.0], [-70.15, 58.25], [-70.25, 58.5], [-70.03, 59.03]]]]}, "2017-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.53, 56.03], [-67.0, 56.25], [-66.47, 56.03], [-66.32, 55.68], [-66.25, 55.65], [-66.0, 55.75], [-65.75, 55.65], [-65.5, 55.75], [-64.97, 55.53], [-64.75, 55.0], [-64.97, 54.47], [-65.5, 54.25], [-65.75, 54.35], [-66.0, 54.25], [-66.25, 54.35], [-66.5, 54.25], [-67.03, 54.47], [-67.18, 54.82], [-67.53, 54.97], [-67.75, 55.5], [-67.53, 56.03]]], [[[-70.25, 58.0], [-70.03, 58.53], [-69.5, 58.75], [-69.25, 58.65], [-69.0, 58.75], [-68.75, 58.65], [-68.5, 58.75], [-68.25, 58.65], [-68.0, 58.75], [-67.47, 58.53], [-67.25, 58.0], [-67.47, 57.47], [-68.0, 57.25], [-68.25, 57.35], [-68.5, 57.25], [-68.75, 57.35], [-69.0, 57.25], [-69.25, 57.35], [-69.5, 57.25], [-70.03, 57.47], [-70.25, 58.0]]]]}, "2017-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.5, 56.25], [-67.25, 56.15], [-67.0, 56.25], [-66.47, 56.03], [-66.32, 55.68], [-66.25, 55.65], [-66.0, 55.75], [-65.75, 55.65], [-65.5, 55.75], [-65.25, 55.65], [-65.0, 55.75], [-64.47, 55.53], [-64.25, 55.0], [-64.47, 54.47], [-65.0, 54.25], [-65.25, 54.35], [-65.5, 54.25], [-65.75, 54.35], [-65.82, 54.32], [-65.97, 53.97], [-66.5, 53.75], [-66.75, 53.85], [-67.0, 53.75], [-67.53, 53.97], [-67.68, 54.32], [-68.03, 54.47], [-68.25, 55.0], [-68.15, 55.25], [-68.25, 55.5], [-68.03, 56.03], [-67.5, 56.25]]], [[[-70.75, 58.5], [-70.53, 59.03], [-70.0, 59.25], [-69.75, 59.15], [-69.5, 59.25], [-68.97, 59.03], [-68.82, 58.68], [-68.75, 58.65], [-68.5, 58.75], [-68.25, 58.65], [-68.0, 58.75], [-67.75, 58.65], [-67.5, 58.75], [-66.97, 58.53], [-66.75, 58.0], [-66.85, 57.75], [-66.75, 57.5], [-66.97, 56.97], [-67.5, 56.75], [-67.75, 56.85], [-68.0, 56.75], [-68.25, 56.85], [-68.5, 56.75], [-68.75, 56.85], [-69.0, 56.75], [-69.25, 56.85], [-69.5, 56.75], [-69.75, 56.85], [-70.0, 56.75], [-70.53, 56.97], [-70.75, 57.5], [-70.65, 57.75], [-70.75, 58.0], [-70.65, 58.25], [-70.75, 58.5]]]]}, "2017-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.65, 58.25], [-70.75, 58.5], [-70.53, 59.03], [-70.0, 59.25], [-69.75, 59.15], [-69.5, 59.25], [-68.97, 59.03], [-68.82, 58.68], [-68.75, 58.65], [-68.5, 58.75], [-68.25, 58.65], [-68.0, 58.75], [-67.75, 58.65], [-67.5, 58.75], [-67.25, 58.65], [-67.0, 58.75], [-66.47, 58.53], [-66.25, 58.0], [-66.46, 57.5], [-66.25, 57.0], [-66.35, 56.75], [-66.32, 56.68], [-66.25, 56.65], [-66.0, 56.75], [-65.47, 56.53], [-65.32, 56.18], [-65.25, 56.15], [-65.0, 56.25], [-64.47, 56.03], [-64.25, 55.5], [-64.35, 55.25], [-64.25, 55.0], [-64.47, 54.47], [-65.0, 54.25], [-65.25, 54.35], [-65.32, 54.32], [-65.47, 53.97], [-66.0, 53.75], [-66.25, 53.85], [-66.5, 53.75], [-66.75, 53.85], [-67.0, 53.75], [-67.53, 53.97], [-67.68, 54.32], [-68.03, 54.47], [-68.18, 54.82], [-68.53, 54.97], [-68.75, 55.5], [-68.53, 56.03], [-68.18, 56.18], [-68.12, 56.3], [-68.53, 56.47], [-68.68, 56.82], [-68.75, 56.85], [-69.0, 56.75], [-69.25, 56.85], [-69.5, 56.75], [-69.75, 56.85], [-70.0, 56.75], [-70.53, 56.97], [-70.75, 57.5], [-70.65, 57.75], [-70.75, 58.0], [-70.65, 58.25]]]]}, "2017-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.65, 58.25], [-70.75, 58.5], [-70.53, 59.03], [-70.0, 59.25], [-69.75, 59.15], [-69.5, 59.25], [-68.97, 59.03], [-68.82, 58.68], [-68.75, 58.65], [-68.5, 58.75], [-68.25, 58.65], [-68.0, 58.75], [-67.75, 58.65], [-67.5, 58.75], [-67.25, 58.65], [-67.0, 58.75], [-66.47, 58.53], [-66.25, 58.0], [-66.46, 57.5], [-66.25, 57.0], [-66.35, 56.75], [-66.32, 56.68], [-66.25, 56.65], [-66.0, 56.75], [-65.47, 56.53], [-65.32, 56.18], [-65.25, 56.15], [-65.0, 56.25], [-64.47, 56.03], [-64.25, 55.5], [-64.35, 55.25], [-64.25, 55.0], [-64.47, 54.47], [-65.0, 54.25], [-65.25, 54.35], [-65.32, 54.32], [-65.47, 53.97], [-66.0, 53.75], [-66.25, 53.85], [-66.5, 53.75], [-66.75, 53.85], [-67.0, 53.75], [-67.53, 53.97], [-67.68, 54.32], [-68.03, 54.47], [-68.18, 54.82], [-68.53, 54.97], [-68.75, 55.5], [-68.53, 56.03], [-68.18, 56.18], [-68.12, 56.3], [-68.53, 56.47], [-68.68, 56.82], [-68.75, 56.85], [-69.0, 56.75], [-69.25, 56.85], [-69.5, 56.75], [-69.75, 56.85], [-70.0, 56.75], [-70.53, 56.97], [-70.75, 57.5], [-70.65, 57.75], [-70.75, 58.0], [-70.65, 58.25]]]]}, "2017-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.25, 57.5], [-69.03, 58.03], [-68.68, 58.18], [-68.53, 58.53], [-68.0, 58.75], [-67.75, 58.65], [-67.5, 58.75], [-67.25, 58.65], [-67.0, 58.75], [-66.47, 58.53], [-66.25, 58.0], [-66.46, 57.5], [-66.25, 57.0], [-66.35, 56.75], [-66.32, 56.68], [-66.25, 56.65], [-66.0, 56.75], [-65.47, 56.53], [-65.32, 56.18], [-65.25, 56.15], [-65.0, 56.25], [-64.47, 56.03], [-64.25, 55.5], [-64.35, 55.25], [-64.25, 55.0], [-64.47, 54.47], [-65.0, 54.25], [-65.25, 54.35], [-65.32, 54.32], [-65.47, 53.97], [-66.0, 53.75], [-66.25, 53.85], [-66.5, 53.75], [-66.75, 53.85], [-67.0, 53.75], [-67.53, 53.97], [-67.68, 54.32], [-68.03, 54.47], [-68.18, 54.82], [-68.53, 54.97], [-68.75, 55.5], [-68.53, 56.03], [-68.18, 56.18], [-68.12, 56.3], [-68.53, 56.47], [-68.68, 56.82], [-69.03, 56.97], [-69.25, 57.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.676531413496605}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.37214108603211}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.993179420698482, 7.167004337159938, 5.910469348716617, 6.3189620445975265, 6.744415180091494, 8.323752411175178, 8.896000195732142, 8.159437859755997]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.9766063519163595, 9.02925045073448, 7.46759004448387, 7.6200105700614245, 9.401608269882502, 11.496821763269452, 13.080012787472015, 10.577261257679481]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.608257130694881, 8.552921308359451, 7.044262844635611, 6.26804801208074, 6.6627758165153965, 7.802577829151969, 7.906752751644994, 6.689090383188301]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.37909278057208, 9.575747319263428, 8.363795437319254, 7.416722174335291, 8.648071609302747, 10.940731606071836, 11.676531413496605, 8.98828570032805]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6933288588320976, 1.8557409718791236, 1.5530539169958568, 1.4947066171311205, 1.5608195962277795, 1.849149422023292, 1.8283274918496677, 1.618048962326569]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8232905902548082, 1.998919212229987, 1.8389212051936636, 1.58644164297749, 1.8475418922920284, 2.442837413742936, 2.48600045031527, 2.327231286764362]}}