{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:57.460467", "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": "2018-Jan-11_to_2018-Jan-13_295.0_42.0"}, "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": 2018010001834}, "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 11 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 13 2018"}, "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": 90388.7110297289}, "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": ["Bay of Fundy", "North Atlantic Ocean"]}, "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": 42.0}, "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": 295.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "295.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 295.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.53, 44.53], [-68.18, 44.68], [-68.03, 45.03], [-67.5, 45.25], [-67.25, 45.15], [-67.18, 45.18], [-67.03, 45.53], [-66.5, 45.75], [-66.25, 45.65], [-66.0, 45.75], [-65.75, 45.65], [-65.5, 45.75], [-64.97, 45.53], [-64.75, 45.0], [-64.97, 44.47], [-65.32, 44.32], [-65.37, 44.2], [-65.25, 44.15], [-65.0, 44.25], [-64.47, 44.03], [-64.32, 43.68], [-63.97, 43.53], [-63.75, 43.0], [-63.85, 42.75], [-63.75, 42.5], [-63.85, 42.25], [-63.75, 42.0], [-63.97, 41.47], [-64.32, 41.32], [-64.47, 40.97], [-64.82, 40.82], [-64.85, 40.75], [-64.75, 40.5], [-64.97, 39.97], [-65.5, 39.75], [-65.75, 39.85], [-66.0, 39.75], [-66.53, 39.97], [-66.75, 40.5], [-66.65, 40.75], [-66.75, 41.0], [-66.54, 41.5], [-66.68, 41.82], [-66.75, 41.85], [-67.0, 41.75], [-67.53, 41.97], [-67.75, 42.5], [-67.65, 42.75], [-67.68, 42.82], [-67.75, 42.85], [-68.0, 42.75], [-68.53, 42.97], [-68.75, 43.5], [-68.65, 43.75], [-68.75, 44.0], [-68.53, 44.53]]]]}, "2018-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.53, 44.53], [-68.18, 44.68], [-68.03, 45.03], [-67.5, 45.25], [-67.25, 45.15], [-67.18, 45.18], [-67.03, 45.53], [-66.5, 45.75], [-66.25, 45.65], [-66.0, 45.75], [-65.75, 45.65], [-65.5, 45.75], [-64.97, 45.53], [-64.75, 45.0], [-64.97, 44.47], [-65.32, 44.32], [-65.37, 44.2], [-65.25, 44.15], [-65.0, 44.25], [-64.47, 44.03], [-64.32, 43.68], [-63.97, 43.53], [-63.75, 43.0], [-63.85, 42.75], [-63.75, 42.5], [-63.85, 42.25], [-63.75, 42.0], [-63.97, 41.47], [-64.32, 41.32], [-64.47, 40.97], [-64.82, 40.82], [-64.85, 40.75], [-64.75, 40.5], [-64.97, 39.97], [-65.5, 39.75], [-65.75, 39.85], [-66.0, 39.75], [-66.53, 39.97], [-66.75, 40.5], [-66.65, 40.75], [-66.75, 41.0], [-66.54, 41.5], [-66.68, 41.82], [-66.75, 41.85], [-67.0, 41.75], [-67.53, 41.97], [-67.75, 42.5], [-67.65, 42.75], [-67.68, 42.82], [-67.75, 42.85], [-68.0, 42.75], [-68.53, 42.97], [-68.75, 43.5], [-68.65, 43.75], [-68.75, 44.0], [-68.53, 44.53]]]]}, "2018-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.53, 44.53], [-68.18, 44.68], [-68.03, 45.03], [-67.5, 45.25], [-67.25, 45.15], [-67.18, 45.18], [-67.03, 45.53], [-66.5, 45.75], [-66.25, 45.65], [-66.0, 45.75], [-65.75, 45.65], [-65.5, 45.75], [-64.97, 45.53], [-64.75, 45.0], [-64.97, 44.47], [-65.32, 44.32], [-65.37, 44.2], [-65.25, 44.15], [-65.0, 44.25], [-64.47, 44.03], [-64.32, 43.68], [-63.97, 43.53], [-63.75, 43.0], [-63.85, 42.75], [-63.75, 42.5], [-63.85, 42.25], [-63.75, 42.0], [-63.97, 41.47], [-64.32, 41.32], [-64.47, 40.97], [-64.82, 40.82], [-64.85, 40.75], [-64.75, 40.5], [-64.97, 39.97], [-65.5, 39.75], [-65.75, 39.85], [-66.0, 39.75], [-66.53, 39.97], [-66.75, 40.5], [-66.65, 40.75], [-66.75, 41.0], [-66.54, 41.5], [-66.68, 41.82], [-66.75, 41.85], [-67.0, 41.75], [-67.53, 41.97], [-67.75, 42.5], [-67.65, 42.75], [-67.68, 42.82], [-67.75, 42.85], [-68.0, 42.75], [-68.53, 42.97], [-68.75, 43.5], [-68.65, 43.75], [-68.75, 44.0], [-68.53, 44.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 14.661762012238398}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.079346639740802}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.01257564335566, 11.677225915482211, 12.725863931438084]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.42737549106613, 18.085041569348675, 19.228261331826786]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.158236859638978, 9.903090343885015, 11.17671271569842]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.266946246106443, 13.097922383879279, 14.661762012238398]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4520249237331546, 2.311466995044353, 2.5311971610617485]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6353049487009195, 2.703484259304526, 2.9800894561518825]}}