{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:42.667019", "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": "2024-Aug-16_to_2024-Aug-19_228.5_55.0"}, "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": 2024080002082}, "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 16 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 19 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 52564.76318984943}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 55.0}, "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": 228.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "228.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 227.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 230.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-133.25, 55.5], [-133.15, 55.75], [-133.18, 55.82], [-133.53, 55.97], [-133.75, 56.5], [-133.53, 57.03], [-133.0, 57.25], [-132.5, 57.04], [-132.0, 57.25], [-131.75, 57.15], [-131.5, 57.25], [-131.25, 57.15], [-131.0, 57.25], [-130.75, 57.15], [-130.5, 57.25], [-129.97, 57.03], [-129.82, 56.68], [-129.47, 56.53], [-129.32, 56.18], [-128.97, 56.03], [-128.75, 55.5], [-128.85, 55.25], [-128.75, 55.0], [-128.85, 54.75], [-128.75, 54.5], [-128.97, 53.97], [-129.32, 53.82], [-129.47, 53.47], [-130.0, 53.25], [-130.53, 53.47], [-130.75, 54.0], [-130.65, 54.25], [-130.68, 54.32], [-130.75, 54.35], [-130.82, 54.32], [-130.97, 53.97], [-131.5, 53.75], [-131.75, 53.85], [-132.0, 53.75], [-132.53, 53.97], [-132.68, 54.32], [-133.03, 54.47], [-133.25, 55.0], [-133.15, 55.25], [-133.25, 55.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-133.03, 54.47], [-133.25, 55.0], [-133.03, 55.53], [-132.68, 55.68], [-132.53, 56.03], [-132.0, 56.25], [-131.47, 56.03], [-131.32, 55.68], [-131.25, 55.65], [-131.18, 55.68], [-131.03, 56.03], [-130.5, 56.25], [-130.25, 56.15], [-130.0, 56.25], [-129.47, 56.03], [-129.25, 55.5], [-129.47, 54.97], [-130.0, 54.75], [-130.25, 54.85], [-130.32, 54.82], [-130.47, 54.47], [-130.82, 54.32], [-130.97, 53.97], [-131.5, 53.75], [-131.75, 53.85], [-132.0, 53.75], [-132.53, 53.97], [-132.68, 54.32], [-133.03, 54.47]]]]}, "2024-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-133.53, 55.97], [-133.75, 56.5], [-133.53, 57.03], [-133.0, 57.25], [-132.5, 57.04], [-132.0, 57.25], [-131.75, 57.15], [-131.5, 57.25], [-131.25, 57.15], [-131.0, 57.25], [-130.75, 57.15], [-130.5, 57.25], [-129.97, 57.03], [-129.82, 56.68], [-129.47, 56.53], [-129.32, 56.18], [-128.97, 56.03], [-128.75, 55.5], [-128.85, 55.25], [-128.75, 55.0], [-128.85, 54.75], [-128.75, 54.5], [-128.97, 53.97], [-129.32, 53.82], [-129.47, 53.47], [-130.0, 53.25], [-130.53, 53.47], [-130.75, 54.0], [-130.65, 54.25], [-130.68, 54.32], [-130.75, 54.35], [-130.82, 54.32], [-130.97, 53.97], [-131.5, 53.75], [-131.75, 53.85], [-132.0, 53.75], [-132.53, 53.97], [-132.68, 54.32], [-133.03, 54.47], [-133.25, 55.0], [-133.15, 55.25], [-133.25, 55.5], [-133.15, 55.75], [-133.18, 55.82], [-133.53, 55.97]]]]}, "2024-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-133.53, 55.97], [-133.75, 56.5], [-133.53, 57.03], [-133.0, 57.25], [-132.5, 57.04], [-132.0, 57.25], [-131.75, 57.15], [-131.5, 57.25], [-131.25, 57.15], [-131.0, 57.25], [-130.75, 57.15], [-130.5, 57.25], [-129.97, 57.03], [-129.82, 56.68], [-129.47, 56.53], [-129.32, 56.18], [-128.97, 56.03], [-128.75, 55.5], [-128.85, 55.25], [-128.75, 55.0], [-128.85, 54.75], [-128.75, 54.5], [-128.97, 53.97], [-129.32, 53.82], [-129.47, 53.47], [-130.0, 53.25], [-130.53, 53.47], [-130.75, 54.0], [-130.65, 54.25], [-130.68, 54.32], [-130.75, 54.35], [-130.82, 54.32], [-130.97, 53.97], [-131.5, 53.75], [-131.75, 53.85], [-132.0, 53.75], [-132.53, 53.97], [-132.68, 54.32], [-133.03, 54.47], [-133.25, 55.0], [-133.15, 55.25], [-133.25, 55.5], [-133.15, 55.75], [-133.18, 55.82], [-133.53, 55.97]]]]}, "2024-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-133.53, 55.97], [-133.75, 56.5], [-133.53, 57.03], [-133.0, 57.25], [-132.5, 57.04], [-132.0, 57.25], [-131.75, 57.15], [-131.5, 57.25], [-131.25, 57.15], [-131.0, 57.25], [-130.75, 57.15], [-130.5, 57.25], [-129.97, 57.03], [-129.82, 56.68], [-129.47, 56.53], [-129.32, 56.18], [-128.97, 56.03], [-128.75, 55.5], [-128.85, 55.25], [-128.75, 55.0], [-128.85, 54.75], [-128.75, 54.5], [-128.97, 53.97], [-129.32, 53.82], [-129.47, 53.47], [-130.0, 53.25], [-130.53, 53.47], [-130.75, 54.0], [-130.65, 54.25], [-130.68, 54.32], [-130.75, 54.35], [-131.0, 54.25], [-131.25, 54.35], [-131.32, 54.32], [-131.47, 53.97], [-132.0, 53.75], [-132.53, 53.97], [-132.68, 54.32], [-133.03, 54.47], [-133.25, 55.0], [-133.15, 55.25], [-133.25, 55.5], [-133.15, 55.75], [-133.18, 55.82], [-133.53, 55.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.965337105466176}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.5656432527262063}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.900260105887696, 15.88180737121769, 17.11787933493639, 15.877043496997373]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.664756668127154, 17.454804376490415, 18.9109061945432, 18.307789417176593]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.2328335689574725, 3.0688576252021162, 4.498338352040309, 3.527000502734]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.611299894801334, 4.549984687414053, 5.965337105466176, 4.834214305115211]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4814825237916491, 1.6545337786770316, 2.655490748986354, 2.2053265402915363]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8261131928900984, 2.3638111752815596, 3.826841221621368, 3.5599406800502362]}}