{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:31.797481", "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-Jul-18_to_2015-Jul-20_237.0_48.5"}, "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": 2015070002530}, "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": "July 18 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 20 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 91262.06811513903}, "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", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["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": 48.5}, "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": 237.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "237.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 233.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 238.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.03, 53.47], [-127.25, 54.0], [-127.03, 54.53], [-126.5, 54.75], [-126.25, 54.65], [-126.0, 54.75], [-125.75, 54.65], [-125.5, 54.75], [-124.97, 54.53], [-124.82, 54.18], [-124.47, 54.03], [-124.32, 53.68], [-123.97, 53.53], [-123.82, 53.18], [-123.75, 53.15], [-123.5, 53.25], [-123.25, 53.15], [-123.0, 53.25], [-122.47, 53.03], [-122.25, 52.5], [-122.35, 52.25], [-122.32, 52.18], [-121.97, 52.03], [-121.75, 51.5], [-121.96, 51.0], [-121.8, 50.63], [-121.5, 50.75], [-120.97, 50.53], [-120.75, 50.0], [-120.85, 49.75], [-120.75, 49.5], [-120.96, 49.0], [-120.75, 48.5], [-120.97, 47.97], [-121.32, 47.82], [-121.47, 47.47], [-122.0, 47.25], [-122.53, 47.47], [-122.68, 47.82], [-122.75, 47.85], [-123.0, 47.75], [-123.53, 47.97], [-123.68, 48.32], [-123.75, 48.35], [-124.0, 48.25], [-124.53, 48.47], [-124.68, 48.82], [-125.03, 48.97], [-125.18, 49.32], [-125.25, 49.35], [-125.5, 49.25], [-126.03, 49.47], [-126.25, 50.0], [-126.03, 50.53], [-125.5, 50.75], [-125.25, 50.65], [-125.18, 50.68], [-125.03, 51.03], [-124.62, 51.2], [-124.68, 51.32], [-124.75, 51.35], [-125.0, 51.25], [-125.25, 51.35], [-125.5, 51.25], [-126.03, 51.47], [-126.25, 52.0], [-126.15, 52.25], [-126.25, 52.5], [-126.15, 52.75], [-126.25, 53.0], [-126.15, 53.25], [-126.18, 53.32], [-126.25, 53.35], [-126.5, 53.25], [-127.03, 53.47]]]]}, "2015-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.03, 53.47], [-127.25, 54.0], [-127.03, 54.53], [-126.5, 54.75], [-126.25, 54.65], [-126.0, 54.75], [-125.75, 54.65], [-125.5, 54.75], [-124.97, 54.53], [-124.82, 54.18], [-124.47, 54.03], [-124.32, 53.68], [-123.97, 53.53], [-123.82, 53.18], [-123.75, 53.15], [-123.5, 53.25], [-123.25, 53.15], [-123.0, 53.25], [-122.47, 53.03], [-122.25, 52.5], [-122.35, 52.25], [-122.32, 52.18], [-121.97, 52.03], [-121.75, 51.5], [-121.96, 51.0], [-121.8, 50.63], [-121.5, 50.75], [-120.97, 50.53], [-120.75, 50.0], [-120.85, 49.75], [-120.75, 49.5], [-120.96, 49.0], [-120.75, 48.5], [-120.97, 47.97], [-121.32, 47.82], [-121.47, 47.47], [-122.0, 47.25], [-122.53, 47.47], [-122.68, 47.82], [-122.75, 47.85], [-123.0, 47.75], [-123.53, 47.97], [-123.68, 48.32], [-123.75, 48.35], [-124.0, 48.25], [-124.53, 48.47], [-124.68, 48.82], [-125.03, 48.97], [-125.18, 49.32], [-125.25, 49.35], [-125.5, 49.25], [-126.03, 49.47], [-126.25, 50.0], [-126.03, 50.53], [-125.5, 50.75], [-125.25, 50.65], [-125.18, 50.68], [-125.03, 51.03], [-124.62, 51.2], [-124.68, 51.32], [-124.75, 51.35], [-125.0, 51.25], [-125.25, 51.35], [-125.5, 51.25], [-126.03, 51.47], [-126.25, 52.0], [-126.15, 52.25], [-126.25, 52.5], [-126.15, 52.75], [-126.25, 53.0], [-126.15, 53.25], [-126.18, 53.32], [-126.25, 53.35], [-126.5, 53.25], [-127.03, 53.47]]]]}, "2015-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.03, 53.47], [-127.25, 54.0], [-127.03, 54.53], [-126.5, 54.75], [-126.25, 54.65], [-126.0, 54.75], [-125.75, 54.65], [-125.5, 54.75], [-124.97, 54.53], [-124.82, 54.18], [-124.47, 54.03], [-124.32, 53.68], [-123.97, 53.53], [-123.82, 53.18], 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53.25], [-126.18, 53.32], [-126.25, 53.35], [-126.5, 53.25], [-127.03, 53.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.506106583886037}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.810806129057401}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.914445590095283, 20.666976400289855, 18.851187461762493]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.026860599332338, 25.04551546431918, 22.46802429141701]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.46502458909732, 5.995768912561687, 3.971624885513197]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.742916115328114, 7.506106583886037, 5.196541624162876]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7107204408896577, 2.3103351024462913, 1.5284410041501466]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.312249338817924, 3.172857478803158, 1.934451336217674]}}