{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:41.403563", "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": "2015-Aug-09_to_2015-Aug-15_231.5_50.0"}, "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": 2015080001850}, "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": "August 09 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 15 2015"}, "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": 328438.5023251367}, "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.Pacific-Ocean", "N.W.North-America", "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": ["North Pacific Ocean", "The Coastal Waters of Southeast Alaska and British Columbia"]}, "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": 50.0}, "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": 231.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "231.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 225.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 233.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.5, 51.75], [-126.97, 51.53], [-126.75, 51.0], [-126.97, 50.47], [-127.5, 50.25], [-128.03, 50.47], [-128.25, 51.0], [-128.03, 51.53], [-127.5, 51.75]]]]}, "2015-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-135.03, 50.53], [-134.68, 50.68], [-134.65, 50.75], [-134.75, 51.0], [-134.53, 51.53], [-134.18, 51.68], [-134.03, 52.03], [-133.5, 52.25], [-133.25, 52.15], [-133.0, 52.25], [-132.75, 52.15], [-132.68, 52.18], [-132.53, 52.53], [-132.0, 52.75], [-131.75, 52.65], [-131.5, 52.75], [-130.97, 52.53], [-130.82, 52.18], [-130.57, 52.07], [-130.75, 52.5], [-130.53, 53.03], [-130.0, 53.25], [-129.47, 53.03], [-129.25, 52.5], [-129.47, 51.97], [-130.0, 51.75], [-129.75, 51.65], [-129.5, 51.75], [-129.25, 51.65], [-129.0, 51.75], [-128.47, 51.53], [-128.32, 51.18], [-128.2, 51.13], [-128.03, 51.53], [-127.5, 51.75], [-126.97, 51.53], [-126.75, 51.0], [-126.97, 50.47], [-127.37, 50.3], [-127.25, 50.0], [-127.47, 49.47], [-128.0, 49.25], [-127.75, 49.15], [-127.5, 49.25], [-126.97, 49.03], [-126.75, 48.5], [-126.97, 47.97], [-127.5, 47.75], [-127.75, 47.85], [-128.0, 47.75], [-128.53, 47.97], [-128.7, 48.38], [-129.0, 48.25], [-129.25, 48.35], [-129.5, 48.25], [-129.75, 48.35], [-130.0, 48.25], [-130.25, 48.35], [-130.5, 48.25], [-130.75, 48.35], [-131.0, 48.25], [-131.25, 48.35], [-131.32, 48.32], [-131.47, 47.97], [-131.82, 47.82], [-131.97, 47.47], [-132.5, 47.25], [-132.75, 47.35], [-132.82, 47.32], [-132.97, 46.97], [-133.5, 46.75], [-134.03, 46.97], [-134.18, 47.32], [-134.53, 47.47], [-134.75, 48.0], [-134.65, 48.25], [-134.75, 48.5], [-134.65, 48.75], [-134.68, 48.82], [-135.03, 48.97], [-135.25, 49.5], [-135.15, 49.75], [-135.25, 50.0], [-135.03, 50.53]], [[-130.43, 51.93], [-130.32, 51.68], [-130.25, 51.65], [-130.0, 51.75], [-130.43, 51.93]], [[-128.25, 49.35], [-128.32, 49.32], [-128.35, 49.25], [-128.3, 49.13], [-128.0, 49.25], [-128.25, 49.35]]]]}, "2015-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-135.03, 50.53], [-134.68, 50.68], [-134.65, 50.75], [-134.75, 51.0], [-134.53, 51.53], [-134.18, 51.68], [-134.03, 52.03], [-133.5, 52.25], [-133.25, 52.15], [-133.18, 52.18], [-133.15, 52.25], [-133.18, 52.32], [-133.53, 52.47], [-133.75, 53.0], [-133.53, 53.53], [-133.0, 53.75], [-132.47, 53.53], [-132.32, 53.18], [-131.97, 53.03], [-131.82, 52.68], [-131.75, 52.65], [-131.5, 52.75], [-131.07, 52.57], [-131.25, 53.0], [-131.03, 53.53], [-130.5, 53.75], [-130.25, 53.65], [-130.0, 53.75], [-129.47, 53.53], [-129.32, 53.18], [-128.97, 53.03], [-128.82, 52.68], [-128.75, 52.65], [-128.5, 52.75], [-127.97, 52.53], [-127.82, 52.18], [-127.47, 52.03], [-127.32, 51.68], [-126.97, 51.53], [-126.75, 51.0], [-126.97, 50.47], [-127.37, 50.3], [-127.32, 50.18], [-126.97, 50.03], [-126.75, 49.5], [-126.85, 49.25], [-126.82, 49.18], [-126.47, 49.03], [-126.25, 48.5], [-126.35, 48.25], [-126.25, 48.0], [-126.47, 47.47], [-126.82, 47.32], [-126.97, 46.97], [-127.5, 46.75], [-127.75, 46.85], [-127.82, 46.82], [-127.85, 46.75], [-127.75, 46.5], [-127.85, 46.25], [-127.75, 46.0], [-127.97, 45.47], [-128.5, 45.25], [-128.75, 45.35], [-129.0, 45.25], [-129.25, 45.35], [-129.5, 45.25], [-129.75, 45.35], [-130.0, 45.25], [-130.25, 45.35], [-130.5, 45.25], [-131.03, 45.47], [-131.25, 46.0], [-131.15, 46.25], [-131.18, 46.32], [-131.25, 46.35], [-131.5, 46.25], [-131.75, 46.35], [-132.0, 46.25], [-132.25, 46.35], [-132.32, 46.32], [-132.47, 45.97], [-133.0, 45.75], [-133.25, 45.85], [-133.5, 45.75], [-134.03, 45.97], [-134.25, 46.5], [-134.15, 46.75], [-134.25, 47.0], [-134.15, 47.25], [-134.18, 47.32], [-134.53, 47.47], [-134.68, 47.82], [-135.03, 47.97], [-135.25, 48.5], [-135.04, 49.0], [-135.25, 49.5], [-135.15, 49.75], [-135.25, 50.0], [-135.03, 50.53]], [[-130.75, 52.15], [-130.68, 52.18], [-130.65, 52.25], [-130.68, 52.32], [-130.93, 52.43], [-130.82, 52.18], [-130.75, 52.15]]]]}, "2015-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-135.03, 50.53], [-134.68, 50.68], [-134.65, 50.75], [-134.75, 51.0], [-134.53, 51.53], [-134.18, 51.68], [-134.03, 52.03], [-133.5, 52.25], [-133.25, 52.15], [-133.18, 52.18], [-133.15, 52.25], [-133.18, 52.32], [-133.53, 52.47], [-133.75, 53.0], [-133.53, 53.53], [-133.0, 53.75], [-132.47, 53.53], [-132.32, 53.18], [-131.97, 53.03], [-131.82, 52.68], [-131.75, 52.65], [-131.5, 52.75], [-131.07, 52.57], [-131.25, 53.0], [-131.03, 53.53], [-130.5, 53.75], [-130.25, 53.65], [-130.0, 53.75], [-129.75, 53.65], [-129.5, 53.75], [-128.97, 53.53], [-128.75, 53.0], [-128.85, 52.75], [-128.82, 52.68], [-128.75, 52.65], [-128.5, 52.75], [-127.97, 52.53], [-127.82, 52.18], [-127.47, 52.03], [-127.32, 51.68], [-126.97, 51.53], [-126.75, 51.0], [-126.97, 50.47], [-127.37, 50.3], [-127.32, 50.18], [-126.97, 50.03], [-126.82, 49.68], [-126.47, 49.53], [-126.25, 49.0], [-126.35, 48.75], [-126.25, 48.5], [-126.35, 48.25], [-126.25, 48.0], [-126.47, 47.47], [-126.82, 47.32], [-126.97, 46.97], [-127.5, 46.75], [-127.75, 46.85], [-127.82, 46.82], [-127.85, 46.75], [-127.75, 46.5], [-127.85, 46.25], [-127.75, 46.0], [-127.97, 45.47], [-128.5, 45.25], [-128.75, 45.35], [-129.0, 45.25], [-129.25, 45.35], [-129.5, 45.25], [-129.75, 45.35], [-130.0, 45.25], [-130.25, 45.35], [-130.5, 45.25], [-131.03, 45.47], [-131.25, 46.0], [-131.15, 46.25], [-131.18, 46.32], [-131.25, 46.35], [-131.5, 46.25], [-131.75, 46.35], [-132.0, 46.25], [-132.25, 46.35], [-132.32, 46.32], [-132.47, 45.97], [-133.0, 45.75], [-133.25, 45.85], [-133.5, 45.75], [-134.03, 45.97], [-134.25, 46.5], [-134.15, 46.75], [-134.25, 47.0], [-134.15, 47.25], [-134.18, 47.32], [-134.53, 47.47], [-134.68, 47.82], [-135.03, 47.97], [-135.25, 48.5], [-135.04, 49.0], [-135.25, 49.5], [-135.15, 49.75], [-135.25, 50.0], [-135.03, 50.53]], [[-130.75, 52.15], [-130.68, 52.18], [-130.65, 52.25], [-130.68, 52.32], [-130.93, 52.43], [-130.82, 52.18], [-130.75, 52.15]]]]}, "2015-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-135.25, 48.5], [-135.03, 49.03], [-134.68, 49.18], [-134.53, 49.53], [-134.12, 49.7], [-134.25, 50.0], [-134.03, 50.53], [-133.5, 50.75], [-133.2, 50.63], [-133.15, 50.75], [-133.25, 51.0], [-133.15, 51.25], [-133.25, 51.5], [-133.15, 51.75], [-133.25, 52.0], [-133.15, 52.25], [-133.18, 52.32], [-133.53, 52.47], [-133.75, 53.0], [-133.53, 53.53], [-133.0, 53.75], [-132.47, 53.53], [-132.32, 53.18], [-131.97, 53.03], [-131.82, 52.68], [-131.75, 52.65], [-131.5, 52.75], [-131.07, 52.57], [-131.25, 53.0], [-131.03, 53.53], [-130.5, 53.75], [-130.25, 53.65], [-130.0, 53.75], [-129.75, 53.65], [-129.5, 53.75], [-128.97, 53.53], [-128.75, 53.0], [-128.85, 52.75], [-128.82, 52.68], [-128.75, 52.65], [-128.5, 52.75], [-127.97, 52.53], [-127.82, 52.18], [-127.47, 52.03], [-127.32, 51.68], [-126.97, 51.53], [-126.75, 51.0], [-126.97, 50.47], [-127.37, 50.3], [-127.32, 50.18], [-126.97, 50.03], [-126.82, 49.68], [-126.47, 49.53], [-126.25, 49.0], [-126.35, 48.75], [-126.25, 48.5], [-126.35, 48.25], [-126.25, 48.0], [-126.47, 47.47], [-126.82, 47.32], [-126.97, 46.97], [-127.5, 46.75], [-127.75, 46.85], [-127.82, 46.82], [-127.85, 46.75], [-127.75, 46.5], [-127.85, 46.25], [-127.75, 46.0], [-127.97, 45.47], [-128.5, 45.25], [-128.75, 45.35], [-129.0, 45.25], [-129.25, 45.35], [-129.5, 45.25], [-129.75, 45.35], [-130.0, 45.25], [-130.25, 45.35], [-130.5, 45.25], [-131.03, 45.47], [-131.25, 46.0], [-131.15, 46.25], [-131.18, 46.32], [-131.25, 46.35], [-131.5, 46.25], [-131.75, 46.35], [-132.0, 46.25], [-132.25, 46.35], [-132.32, 46.32], [-132.47, 45.97], [-133.0, 45.75], [-133.25, 45.85], [-133.5, 45.75], [-134.03, 45.97], [-134.25, 46.5], [-134.15, 46.75], [-134.25, 47.0], [-134.12, 47.3], [-134.53, 47.47], [-134.68, 47.82], [-135.03, 47.97], [-135.25, 48.5]], [[-130.75, 52.15], [-130.68, 52.18], [-130.65, 52.25], [-130.68, 52.32], [-130.93, 52.43], [-130.82, 52.18], [-130.75, 52.15]]]]}, "2015-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-130.75, 53.0], [-130.53, 53.53], [-130.0, 53.75], [-129.75, 53.65], [-129.5, 53.75], [-128.97, 53.53], [-128.75, 53.0], [-128.85, 52.75], [-128.82, 52.68], [-128.75, 52.65], [-128.5, 52.75], [-127.97, 52.53], [-127.75, 52.0], [-127.87, 51.7], [-127.47, 51.53], [-127.25, 51.0], [-127.46, 50.5], [-127.32, 50.18], [-126.97, 50.03], [-126.82, 49.68], [-126.47, 49.53], [-126.25, 49.0], [-126.35, 48.75], [-126.25, 48.5], [-126.35, 48.25], [-126.25, 48.0], [-126.47, 47.47], [-127.0, 47.25], [-127.25, 47.35], [-127.5, 47.25], [-127.75, 47.35], [-127.87, 47.3], [-127.75, 47.0], [-127.85, 46.75], [-127.75, 46.5], [-127.97, 45.97], [-128.5, 45.75], [-129.03, 45.97], [-129.25, 46.5], [-129.15, 46.75], [-129.18, 46.82], [-129.53, 46.97], [-129.75, 47.5], [-129.65, 47.75], [-129.75, 48.0], [-129.65, 48.25], [-129.68, 48.32], [-130.03, 48.47], [-130.25, 49.0], [-130.15, 49.25], [-130.25, 49.5], [-130.15, 49.75], [-130.25, 50.0], [-130.15, 50.25], [-130.25, 50.5], [-130.15, 50.75], [-130.25, 51.0], [-130.03, 51.53], [-129.62, 51.7], [-129.68, 51.82], [-130.03, 51.97], [-130.18, 52.32], [-130.53, 52.47], [-130.75, 53.0]]]]}, "2015-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-128.03, 47.97], [-128.25, 48.5], [-128.03, 49.03], [-127.5, 49.25], [-126.97, 49.03], [-126.75, 48.5], [-126.97, 47.97], [-127.5, 47.75], [-128.03, 47.97]]], [[[-129.25, 50.0], [-129.03, 50.53], [-128.5, 50.75], [-127.97, 50.53], [-127.75, 50.0], [-127.97, 49.47], [-128.5, 49.25], [-129.03, 49.47], [-129.25, 50.0]]], [[[-130.53, 53.53], [-130.0, 53.75], [-129.47, 53.53], [-129.25, 53.0], [-129.43, 52.57], [-129.0, 52.75], [-128.75, 52.65], [-128.5, 52.75], [-127.97, 52.53], [-127.75, 52.0], [-127.97, 51.47], [-128.5, 51.25], [-128.75, 51.35], [-129.0, 51.25], [-129.53, 51.47], [-129.75, 52.0], [-129.57, 52.43], [-130.0, 52.25], [-130.53, 52.47], [-130.75, 53.0], [-130.53, 53.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.673257326777218}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.8559076260233738}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.708416681838514, 16.424662312740452, 16.93588568531345, 17.24071115254037, 17.097024753688345, 16.53509781658579, 15.93365210324356]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.708416681838514, 17.042106618592072, 17.747570598826314, 18.120213188504465, 18.39753640260011, 17.79200267363609, 16.832856696469037]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.486702852935366, 1.6180754184354182, 1.8361245810140956, 2.0941401438175746, 1.8631965338463972, 1.4789577258717792, 1.3498983238820075]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.486702852935366, 1.960849096614595, 2.191176603903955, 2.673257326777218, 2.164040894721154, 1.6585084169989273, 1.4382380661048728]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.615881965919461, 1.534114263143795, 1.7277962898425976, 1.9643809749706809, 1.7143091611594155, 1.4486195785294715, 1.3472073425830193]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.615881965919461, 1.8352055340374043, 2.1791346351101666, 2.7443638166744266, 2.0791545794261626, 1.665020007847349, 1.39487388246569]}}