{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:59.732160", "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": "2019-Jan-08_to_2019-Jan-14_234.0_42.5"}, "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": 2019010001696}, "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": "January 08 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 14 2019"}, "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": 453649.1343955969}, "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.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": 42.5}, "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": 234.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "234.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 228.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 236.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.75}, "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": {"2019-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-129.15, 43.75], [-129.25, 44.0], [-129.07, 44.43], [-129.5, 44.25], [-130.03, 44.47], [-130.25, 45.0], [-130.03, 45.53], [-129.5, 45.75], [-128.97, 45.53], [-128.75, 45.0], [-128.93, 44.57], [-128.5, 44.75], [-128.25, 44.65], [-128.0, 44.75], [-127.75, 44.65], [-127.68, 44.68], [-127.53, 45.03], [-127.0, 45.25], [-126.75, 45.15], [-126.5, 45.25], [-125.97, 45.03], [-125.75, 44.5], [-125.85, 44.25], [-125.75, 44.0], [-125.85, 43.75], [-125.82, 43.68], [-125.47, 43.53], [-125.25, 43.0], [-125.35, 42.75], [-125.25, 42.5], [-125.35, 42.25], [-125.25, 42.0], [-125.35, 41.75], [-125.25, 41.5], [-125.47, 40.97], [-126.0, 40.75], [-126.25, 40.85], [-126.5, 40.75], [-126.75, 40.85], [-126.82, 40.82], [-126.97, 40.47], [-127.5, 40.25], [-128.03, 40.47], [-128.25, 41.0], [-128.04, 41.5], [-128.18, 41.82], [-128.53, 41.97], [-128.68, 42.32], [-129.03, 42.47], [-129.25, 43.0], [-129.15, 43.25], [-129.25, 43.5], [-129.15, 43.75]]]]}, "2019-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-130.53, 47.03], [-130.18, 47.18], [-130.15, 47.25], [-130.25, 47.5], [-130.15, 47.75], [-130.25, 48.0], [-130.04, 48.5], [-130.18, 48.82], [-130.53, 48.97], [-130.75, 49.5], [-130.65, 49.75], [-130.75, 50.0], [-130.65, 50.25], [-130.75, 50.5], [-130.53, 51.03], [-130.0, 51.25], [-129.75, 51.15], [-129.5, 51.25], [-128.97, 51.03], [-128.82, 50.68], [-128.47, 50.53], [-128.32, 50.18], [-128.25, 50.15], [-128.0, 50.25], [-127.47, 50.03], [-127.25, 49.5], [-127.35, 49.25], [-127.32, 49.18], [-127.25, 49.15], [-127.0, 49.25], [-126.47, 49.03], [-126.32, 48.68], [-125.97, 48.53], [-125.82, 48.18], [-125.47, 48.03], [-125.32, 47.68], [-124.97, 47.53], [-124.82, 47.18], [-124.47, 47.03], [-124.32, 46.68], [-123.97, 46.53], [-123.75, 46.0], [-123.85, 45.75], [-123.75, 45.5], [-123.97, 44.97], [-124.32, 44.82], [-124.35, 44.75], [-124.25, 44.5], [-124.35, 44.25], [-124.25, 44.0], [-124.47, 43.47], [-124.82, 43.32], [-124.97, 42.97], [-125.32, 42.82], [-125.35, 42.75], [-125.25, 42.5], [-125.35, 42.25], [-125.25, 42.0], [-125.35, 41.75], [-125.25, 41.5], [-125.47, 40.97], [-126.0, 40.75], [-126.25, 40.85], [-126.5, 40.75], [-126.75, 40.85], [-126.82, 40.82], [-126.97, 40.47], [-127.5, 40.25], [-128.03, 40.47], [-128.25, 41.0], [-128.04, 41.5], [-128.18, 41.82], [-128.53, 41.97], [-128.68, 42.32], [-129.03, 42.47], [-129.25, 43.0], [-129.15, 43.25], [-129.25, 43.5], [-129.15, 43.75], [-129.25, 44.0], [-129.15, 44.25], [-129.18, 44.32], [-129.25, 44.35], [-129.5, 44.25], [-130.03, 44.47], [-130.25, 45.0], [-130.15, 45.25], [-130.18, 45.32], [-130.53, 45.47], [-130.75, 46.0], [-130.65, 46.25], [-130.75, 46.5], [-130.53, 47.03]]]]}, "2019-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-131.75, 52.0], [-131.53, 52.53], [-131.0, 52.75], [-130.75, 52.65], [-130.5, 52.75], [-130.25, 52.65], [-130.0, 52.75], [-129.75, 52.65], [-129.5, 52.75], [-129.25, 52.65], [-129.0, 52.75], [-128.75, 52.65], [-128.5, 52.75], [-127.97, 52.53], [-127.82, 52.18], [-127.75, 52.15], [-127.5, 52.25], [-127.25, 52.15], [-127.0, 52.25], [-126.47, 52.03], [-126.32, 51.68], [-125.97, 51.53], [-125.8, 51.13], [-125.5, 51.25], [-124.97, 51.03], [-124.75, 50.5], [-124.85, 50.25], [-124.75, 50.0], [-124.97, 49.47], [-125.32, 49.32], [-125.35, 49.25], [-125.32, 49.18], [-125.25, 49.15], [-125.0, 49.25], [-124.75, 49.15], [-124.5, 49.25], [-123.97, 49.03], [-123.75, 48.5], [-123.87, 48.2], [-123.47, 48.03], [-123.25, 47.5], [-123.46, 47.0], [-123.25, 46.5], [-123.47, 45.97], [-123.82, 45.82], [-123.85, 45.75], [-123.75, 45.5], [-123.97, 44.97], [-124.32, 44.82], [-124.35, 44.75], [-124.25, 44.5], [-124.35, 44.25], [-124.25, 44.0], [-124.47, 43.47], [-124.82, 43.32], [-124.97, 42.97], [-125.32, 42.82], [-125.35, 42.75], [-125.25, 42.5], [-125.35, 42.25], [-125.25, 42.0], [-125.35, 41.75], [-125.25, 41.5], [-125.47, 40.97], [-126.0, 40.75], [-126.25, 40.85], [-126.5, 40.75], [-126.75, 40.85], [-126.82, 40.82], [-126.97, 40.47], [-127.5, 40.25], [-128.03, 40.47], [-128.25, 41.0], [-128.04, 41.5], [-128.18, 41.82], [-128.53, 41.97], [-128.68, 42.32], [-129.03, 42.47], [-129.18, 42.82], [-129.53, 42.97], [-129.68, 43.32], [-130.03, 43.47], [-130.25, 44.0], [-130.15, 44.25], [-130.25, 44.5], [-130.15, 44.75], [-130.18, 44.82], [-130.53, 44.97], [-130.68, 45.32], [-131.03, 45.47], [-131.25, 46.0], [-131.15, 46.25], [-131.25, 46.5], [-131.03, 47.03], [-130.5, 47.25], [-130.25, 47.15], [-130.18, 47.18], [-130.15, 47.25], [-130.25, 47.5], [-130.15, 47.75], [-130.25, 48.0], [-130.04, 48.5], [-130.18, 48.82], [-130.53, 48.97], [-130.75, 49.5], [-130.65, 49.75], [-130.75, 50.0], [-130.65, 50.25], [-130.68, 50.32], [-131.03, 50.47], [-131.25, 51.0], [-131.15, 51.25], [-131.18, 51.32], [-131.53, 51.47], [-131.75, 52.0]], [[-126.15, 50.25], [-126.2, 50.38], [-126.37, 50.3], [-126.3, 50.13], [-126.18, 50.18], [-126.15, 50.25]]]]}, "2019-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-131.75, 52.0], [-131.53, 52.53], [-131.0, 52.75], [-130.75, 52.65], [-130.5, 52.75], [-130.25, 52.65], [-130.18, 52.68], [-130.03, 53.03], [-129.68, 53.18], [-129.53, 53.53], [-129.0, 53.75], [-128.75, 53.65], [-128.5, 53.75], [-128.25, 53.65], [-128.0, 53.75], [-127.47, 53.53], [-127.32, 53.18], [-126.97, 53.03], [-126.75, 52.5], [-126.87, 52.2], [-126.47, 52.03], [-126.32, 51.68], [-126.25, 51.65], [-126.0, 51.75], [-125.47, 51.53], [-125.32, 51.18], [-124.97, 51.03], [-124.75, 50.5], [-124.85, 50.25], [-124.75, 50.0], [-124.97, 49.47], [-125.32, 49.32], [-125.35, 49.25], [-125.32, 49.18], [-125.25, 49.15], [-125.0, 49.25], [-124.75, 49.15], [-124.5, 49.25], [-123.97, 49.03], [-123.75, 48.5], [-123.87, 48.2], [-123.47, 48.03], [-123.25, 47.5], [-123.46, 47.0], [-123.25, 46.5], [-123.47, 45.97], [-123.82, 45.82], [-123.85, 45.75], [-123.75, 45.5], [-123.97, 44.97], [-124.32, 44.82], [-124.35, 44.75], [-124.25, 44.5], [-124.35, 44.25], [-124.25, 44.0], [-124.46, 43.5], [-124.25, 43.0], [-124.35, 42.75], [-124.25, 42.5], [-124.35, 42.25], [-124.25, 42.0], [-124.47, 41.47], [-125.0, 41.25], [-125.25, 41.35], [-125.32, 41.32], [-125.47, 40.97], [-126.0, 40.75], [-126.25, 40.85], [-126.5, 40.75], [-126.75, 40.85], [-126.82, 40.82], [-126.97, 40.47], [-127.5, 40.25], [-128.03, 40.47], [-128.25, 41.0], [-128.04, 41.5], [-128.18, 41.82], [-128.53, 41.97], [-128.68, 42.32], [-129.03, 42.47], [-129.18, 42.82], [-129.53, 42.97], [-129.68, 43.32], [-130.03, 43.47], [-130.25, 44.0], [-130.15, 44.25], [-130.25, 44.5], [-130.15, 44.75], [-130.18, 44.82], [-130.53, 44.97], [-130.68, 45.32], [-131.03, 45.47], [-131.25, 46.0], [-131.15, 46.25], [-131.25, 46.5], [-131.03, 47.03], [-130.5, 47.25], [-130.25, 47.15], [-130.18, 47.18], [-130.15, 47.25], [-130.18, 47.32], [-130.53, 47.47], [-130.75, 48.0], [-130.65, 48.25], [-130.75, 48.5], [-130.65, 48.75], [-130.68, 48.82], [-131.03, 48.97], [-131.25, 49.5], [-131.15, 49.75], [-131.25, 50.0], [-131.15, 50.25], [-131.25, 50.5], [-131.15, 50.75], [-131.25, 51.0], [-131.15, 51.25], [-131.18, 51.32], [-131.53, 51.47], [-131.75, 52.0]], [[-126.18, 50.18], [-126.15, 50.25], [-126.18, 50.32], [-126.25, 50.35], [-126.37, 50.3], [-126.32, 50.18], [-126.25, 50.15], [-126.18, 50.18]]]]}, "2019-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-131.75, 52.0], [-131.53, 52.53], [-131.0, 52.75], [-130.75, 52.65], [-130.5, 52.75], [-130.25, 52.65], [-130.18, 52.68], [-130.03, 53.03], [-129.68, 53.18], [-129.53, 53.53], [-129.0, 53.75], [-128.75, 53.65], [-128.5, 53.75], [-128.25, 53.65], [-128.0, 53.75], [-127.47, 53.53], [-127.32, 53.18], [-126.97, 53.03], [-126.75, 52.5], [-126.87, 52.2], [-126.47, 52.03], [-126.32, 51.68], [-126.25, 51.65], [-126.0, 51.75], [-125.47, 51.53], [-125.32, 51.18], [-124.97, 51.03], [-124.75, 50.5], [-124.85, 50.25], [-124.75, 50.0], [-124.97, 49.47], [-125.32, 49.32], [-125.35, 49.25], [-125.32, 49.18], [-125.25, 49.15], [-125.0, 49.25], [-124.75, 49.15], [-124.5, 49.25], [-123.97, 49.03], [-123.75, 48.5], [-123.87, 48.2], [-123.47, 48.03], [-123.25, 47.5], [-123.46, 47.0], [-123.25, 46.5], [-123.47, 45.97], [-123.82, 45.82], [-123.85, 45.75], [-123.75, 45.5], [-123.97, 44.97], [-124.32, 44.82], [-124.35, 44.75], [-124.25, 44.5], [-124.35, 44.25], [-124.25, 44.0], [-124.46, 43.5], [-124.25, 43.0], [-124.35, 42.75], [-124.25, 42.5], [-124.35, 42.25], [-124.25, 42.0], [-124.47, 41.47], [-125.0, 41.25], [-125.25, 41.35], [-125.5, 41.25], [-125.75, 41.35], [-126.0, 41.25], [-126.53, 41.47], [-126.68, 41.82], [-126.75, 41.85], [-126.82, 41.82], [-126.97, 41.47], [-127.5, 41.25], [-128.03, 41.47], [-128.18, 41.82], [-128.53, 41.97], [-128.75, 42.5], [-128.65, 42.75], [-128.68, 42.82], [-128.75, 42.85], [-129.0, 42.75], [-129.53, 42.97], [-129.68, 43.32], [-130.03, 43.47], [-130.25, 44.0], [-130.15, 44.25], [-130.25, 44.5], [-130.15, 44.75], [-130.18, 44.82], [-130.53, 44.97], [-130.68, 45.32], [-131.03, 45.47], [-131.25, 46.0], [-131.15, 46.25], [-131.25, 46.5], [-131.03, 47.03], [-130.5, 47.25], [-130.25, 47.15], [-130.18, 47.18], [-130.15, 47.25], [-130.18, 47.32], [-130.53, 47.47], [-130.75, 48.0], [-130.65, 48.25], [-130.75, 48.5], [-130.65, 48.75], [-130.68, 48.82], [-131.03, 48.97], [-131.25, 49.5], [-131.15, 49.75], [-131.25, 50.0], [-131.15, 50.25], [-131.25, 50.5], [-131.15, 50.75], [-131.25, 51.0], [-131.15, 51.25], [-131.18, 51.32], [-131.53, 51.47], [-131.75, 52.0]], [[-126.18, 50.18], [-126.15, 50.25], [-126.18, 50.32], [-126.25, 50.35], [-126.37, 50.3], [-126.32, 50.18], [-126.25, 50.15], [-126.18, 50.18]]]]}, "2019-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-131.75, 52.0], [-131.53, 52.53], [-131.0, 52.75], [-130.75, 52.65], [-130.5, 52.75], [-130.25, 52.65], [-130.18, 52.68], [-130.03, 53.03], [-129.68, 53.18], [-129.53, 53.53], [-129.0, 53.75], [-128.75, 53.65], [-128.5, 53.75], [-128.25, 53.65], [-128.0, 53.75], [-127.47, 53.53], [-127.32, 53.18], [-126.97, 53.03], [-126.75, 52.5], [-126.96, 52.0], [-126.82, 51.68], [-126.75, 51.65], [-126.5, 51.75], [-126.25, 51.65], [-126.0, 51.75], [-125.47, 51.53], [-125.32, 51.18], [-124.97, 51.03], [-124.75, 50.5], [-124.85, 50.25], [-124.75, 50.0], [-124.97, 49.47], [-125.32, 49.32], [-125.35, 49.25], [-125.32, 49.18], [-125.25, 49.15], [-125.0, 49.25], [-124.75, 49.15], [-124.5, 49.25], [-123.97, 49.03], [-123.75, 48.5], [-123.96, 48.0], [-123.75, 47.5], [-123.96, 47.0], [-123.75, 46.5], [-123.85, 46.25], [-123.75, 46.0], [-123.97, 45.47], [-124.5, 45.25], [-124.75, 45.35], [-124.82, 45.32], [-124.85, 45.25], [-124.75, 45.0], [-124.85, 44.75], [-124.75, 44.5], [-124.85, 44.25], [-124.75, 44.0], [-124.85, 43.75], [-124.82, 43.68], [-124.47, 43.53], [-124.25, 43.0], [-124.35, 42.75], [-124.25, 42.5], [-124.35, 42.25], [-124.25, 42.0], [-124.47, 41.47], [-125.0, 41.25], [-125.25, 41.35], [-125.5, 41.25], [-126.03, 41.47], [-126.18, 41.82], [-126.25, 41.85], [-126.5, 41.75], [-126.75, 41.85], [-127.0, 41.75], [-127.25, 41.85], [-127.5, 41.75], [-128.03, 41.97], [-128.18, 42.32], [-128.53, 42.47], [-128.75, 43.0], [-128.65, 43.25], [-128.68, 43.32], [-128.75, 43.35], [-129.0, 43.25], [-129.53, 43.47], [-129.68, 43.82], [-130.03, 43.97], [-130.25, 44.5], [-130.15, 44.75], [-130.25, 45.0], [-130.04, 45.5], [-130.18, 45.82], [-130.53, 45.97], [-130.75, 46.5], [-130.53, 47.03], [-130.18, 47.18], [-130.15, 47.25], [-130.18, 47.32], [-130.53, 47.47], [-130.75, 48.0], [-130.65, 48.25], [-130.75, 48.5], [-130.65, 48.75], [-130.68, 48.82], [-131.03, 48.97], [-131.25, 49.5], [-131.15, 49.75], [-131.25, 50.0], [-131.15, 50.25], [-131.25, 50.5], [-131.15, 50.75], [-131.25, 51.0], [-131.15, 51.25], [-131.18, 51.32], [-131.53, 51.47], [-131.75, 52.0]], [[-126.18, 50.18], [-126.15, 50.25], [-126.18, 50.32], [-126.25, 50.35], [-126.37, 50.3], [-126.32, 50.18], [-126.25, 50.15], [-126.18, 50.18]]]]}, "2019-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-125.75, 48.5], [-125.53, 49.03], [-125.0, 49.25], [-124.75, 49.15], [-124.5, 49.25], [-123.97, 49.03], [-123.75, 48.5], [-123.97, 47.97], [-124.5, 47.75], [-124.75, 47.85], [-125.0, 47.75], [-125.53, 47.97], [-125.75, 48.5]]], [[[-127.25, 49.0], [-127.03, 49.53], [-126.5, 49.75], [-125.97, 49.53], [-125.75, 49.0], [-125.97, 48.47], [-126.5, 48.25], [-127.03, 48.47], [-127.25, 49.0]]], [[[-129.03, 51.53], [-128.5, 51.75], [-128.25, 51.65], [-128.0, 51.75], [-127.47, 51.53], [-127.25, 51.0], [-127.47, 50.47], [-128.0, 50.25], [-128.25, 50.35], [-128.5, 50.25], [-129.03, 50.47], [-129.25, 51.0], [-129.03, 51.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.154798869216563}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.6757122257610537}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.404919779325553, 11.458242860259361, 10.658985207503235, 10.937470837395665, 10.64057023511316, 10.29907351589992, 9.262626022378356]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.72209958863624, 12.677805035662402, 12.999266493367884, 12.919491183012155, 12.694124245388593, 12.441918276893091, 9.880746436395441]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.1140798911568126, 2.2662673295751614, 2.3509677421630273, 3.0433030897981355, 2.8985500139478293, 2.7110061145326894, 2.615818989423576]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.624596315419069, 2.910628997754543, 5.510738492483483, 6.972364645236382, 6.897706308129102, 7.154798869216563, 2.8106427671052074]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3948778331024656, 1.350662057106599, 1.2195534723496164, 1.4570518937639212, 1.3413756418920424, 1.2175852162519147, 1.1114176703917753]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.83341114131579, 1.6698569485216046, 1.3815215106811425, 1.717040511249328, 1.7099092974550627, 1.5773066851494293, 1.1833450759824733]}}