{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:32.591154", "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": "2011-Sep-26_to_2011-Sep-29_282.0_47.5"}, "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": 2011090002746}, "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": "September 26 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 29 2011"}, "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": 95969.27048570519}, "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": ["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": 47.5}, "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": 282.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "282.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 278.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 283.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 45.97], [-82.25, 46.5], [-82.03, 47.03], [-81.5, 47.25], [-81.25, 47.15], [-81.18, 47.18], [-81.03, 47.53], [-80.5, 47.75], [-80.25, 47.65], [-80.0, 47.75], [-79.47, 47.53], [-79.25, 47.0], [-79.46, 46.5], [-79.32, 46.18], [-79.25, 46.15], [-79.0, 46.25], [-78.47, 46.03], [-78.32, 45.68], [-77.97, 45.53], [-77.75, 45.0], [-77.97, 44.47], [-78.32, 44.32], [-78.47, 43.97], [-79.0, 43.75], [-79.53, 43.97], [-79.68, 44.32], [-80.03, 44.47], [-80.18, 44.82], [-80.25, 44.85], [-80.5, 44.75], [-80.75, 44.85], [-80.82, 44.82], [-80.97, 44.47], [-81.5, 44.25], [-82.03, 44.47], [-82.25, 45.0], [-82.03, 45.53], [-81.68, 45.68], [-81.62, 45.8], [-82.03, 45.97]]]]}, "2011-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 45.97], [-82.25, 46.5], [-82.03, 47.03], [-81.5, 47.25], [-81.25, 47.15], [-81.18, 47.18], [-81.03, 47.53], [-80.5, 47.75], [-80.25, 47.65], [-80.18, 47.68], [-80.15, 47.75], [-80.25, 48.0], [-80.03, 48.53], [-79.5, 48.75], [-79.25, 48.65], [-79.0, 48.75], [-78.75, 48.65], [-78.5, 48.75], [-78.25, 48.65], [-78.0, 48.75], [-77.47, 48.53], [-77.32, 48.18], [-77.25, 48.15], [-77.0, 48.25], [-76.47, 48.03], [-76.32, 47.68], [-75.97, 47.53], [-75.75, 47.0], [-75.97, 46.47], [-76.32, 46.32], [-76.35, 46.25], [-76.25, 46.0], [-76.37, 45.7], [-75.97, 45.53], [-75.75, 45.0], [-75.97, 44.47], [-76.5, 44.25], [-76.75, 44.35], [-77.0, 44.25], [-77.25, 44.35], [-77.5, 44.25], [-78.0, 44.46], [-78.32, 44.32], [-78.47, 43.97], [-79.0, 43.75], [-79.53, 43.97], [-79.68, 44.32], [-80.03, 44.47], [-80.18, 44.82], [-80.25, 44.85], [-80.5, 44.75], [-80.75, 44.85], [-80.82, 44.82], [-80.97, 44.47], [-81.5, 44.25], [-82.03, 44.47], [-82.25, 45.0], [-82.03, 45.53], [-81.68, 45.68], [-81.62, 45.8], [-82.03, 45.97]], [[-79.43, 46.43], [-79.32, 46.18], [-79.25, 46.15], [-79.12, 46.2], [-79.18, 46.32], [-79.43, 46.43]]]]}, "2011-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 45.97], [-82.25, 46.5], [-82.03, 47.03], [-81.5, 47.25], [-81.25, 47.15], [-81.18, 47.18], [-81.03, 47.53], [-80.5, 47.75], [-80.25, 47.65], [-80.18, 47.68], [-80.15, 47.75], [-80.25, 48.0], [-80.03, 48.53], [-79.5, 48.75], [-79.25, 48.65], [-79.0, 48.75], [-78.75, 48.65], [-78.5, 48.75], [-78.25, 48.65], [-78.0, 48.75], [-77.47, 48.53], [-77.32, 48.18], [-77.25, 48.15], [-77.0, 48.25], [-76.47, 48.03], [-76.32, 47.68], [-75.97, 47.53], [-75.75, 47.0], [-75.97, 46.47], [-76.32, 46.32], [-76.35, 46.25], [-76.25, 46.0], [-76.37, 45.7], [-75.97, 45.53], [-75.75, 45.0], [-75.97, 44.47], [-76.5, 44.25], [-76.75, 44.35], [-77.0, 44.25], [-77.25, 44.35], [-77.5, 44.25], [-78.0, 44.46], [-78.32, 44.32], [-78.47, 43.97], [-79.0, 43.75], [-79.53, 43.97], [-79.68, 44.32], [-80.03, 44.47], [-80.18, 44.82], [-80.25, 44.85], [-80.5, 44.75], [-80.75, 44.85], [-80.82, 44.82], [-80.97, 44.47], [-81.5, 44.25], [-82.03, 44.47], [-82.25, 45.0], [-82.03, 45.53], [-81.68, 45.68], [-81.62, 45.8], [-82.03, 45.97]], [[-79.43, 46.43], [-79.32, 46.18], [-79.25, 46.15], [-79.12, 46.2], [-79.18, 46.32], [-79.43, 46.43]]]]}, "2011-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.03, 48.53], [-79.5, 48.75], [-79.25, 48.65], [-79.0, 48.75], [-78.75, 48.65], [-78.5, 48.75], [-78.25, 48.65], [-78.0, 48.75], [-77.47, 48.53], [-77.32, 48.18], [-77.25, 48.15], [-77.0, 48.25], [-76.47, 48.03], [-76.32, 47.68], [-75.97, 47.53], [-75.75, 47.0], [-75.97, 46.47], [-76.32, 46.32], [-76.35, 46.25], [-76.25, 46.0], [-76.37, 45.7], [-75.97, 45.53], [-75.75, 45.0], [-75.97, 44.47], [-76.5, 44.25], [-76.75, 44.35], [-77.0, 44.25], [-77.25, 44.35], [-77.5, 44.25], [-78.03, 44.47], [-78.18, 44.82], [-78.53, 44.97], [-78.75, 45.5], [-78.65, 45.75], [-78.68, 45.82], [-79.03, 45.97], [-79.18, 46.32], [-79.53, 46.47], [-79.68, 46.82], [-80.03, 46.97], [-80.25, 47.5], [-80.15, 47.75], [-80.25, 48.0], [-80.03, 48.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.662086421020376}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.05222839756271}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.634970606352226, 17.05369696869701, 17.433243588341327, 16.80649970078224]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.69005286599605, 19.16895774513125, 18.72275383979712, 17.667125615007933]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.154482496376729, 5.795905045512419, 6.38818283497074, 6.469309878957836]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.107990189839825, 6.781641307013047, 7.662086421020376, 7.630097916260297]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4625070085263858, 1.5639649112184544, 1.699444259234526, 1.6885885768496893]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7260926891130441, 1.7819092999342978, 1.9547494819212505, 1.9179209654031852]}}