{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:35.126996", "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-Apr-12_to_2019-Apr-14_285.0_65.0"}, "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": 2019040001757}, "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": "April 12 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 14 2019"}, "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": 54421.84263869225}, "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": ["N.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": ["Hudson Strait", "The Northwestern Passages"]}, "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": 65.0}, "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": 285.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "285.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 283.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 63.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 66.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.53, 66.53], [-76.18, 66.68], [-76.03, 67.03], [-75.5, 67.25], [-75.25, 67.15], [-75.0, 67.25], [-74.75, 67.15], [-74.5, 67.25], [-74.25, 67.15], [-74.0, 67.25], [-73.47, 67.03], [-73.25, 66.5], [-73.37, 66.2], [-73.25, 66.15], [-73.0, 66.25], [-72.75, 66.15], [-72.68, 66.18], [-72.53, 66.53], [-72.0, 66.75], [-71.47, 66.53], [-71.32, 66.18], [-71.25, 66.15], [-71.0, 66.25], [-70.75, 66.15], [-70.5, 66.25], [-70.25, 66.15], [-70.0, 66.25], [-69.47, 66.03], [-69.25, 65.5], [-69.47, 64.97], [-70.0, 64.75], [-70.25, 64.85], [-70.37, 64.8], [-70.25, 64.5], [-70.47, 63.97], [-70.82, 63.82], [-70.97, 63.47], [-71.5, 63.25], [-71.75, 63.35], [-72.0, 63.25], [-72.25, 63.35], [-72.5, 63.25], [-72.75, 63.35], [-73.0, 63.25], [-73.53, 63.47], [-73.68, 63.82], [-73.75, 63.85], [-74.0, 63.75], [-74.25, 63.85], [-74.5, 63.75], [-74.75, 63.85], [-75.0, 63.75], [-75.53, 63.97], [-75.75, 64.5], [-75.65, 64.75], [-75.68, 64.82], [-75.75, 64.85], [-76.0, 64.75], [-76.53, 64.97], [-76.75, 65.5], [-76.65, 65.75], [-76.75, 66.0], [-76.53, 66.53]]]]}, "2019-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.53, 66.53], [-76.18, 66.68], [-76.03, 67.03], [-75.5, 67.25], [-75.25, 67.15], [-75.0, 67.25], [-74.75, 67.15], [-74.5, 67.25], [-74.25, 67.15], [-74.0, 67.25], [-73.47, 67.03], [-73.25, 66.5], [-73.37, 66.2], [-73.25, 66.15], [-73.0, 66.25], [-72.75, 66.15], [-72.68, 66.18], [-72.53, 66.53], [-72.0, 66.75], [-71.47, 66.53], [-71.32, 66.18], [-71.25, 66.15], [-71.0, 66.25], [-70.75, 66.15], [-70.5, 66.25], [-70.25, 66.15], [-70.0, 66.25], [-69.47, 66.03], [-69.25, 65.5], [-69.47, 64.97], [-70.0, 64.75], [-70.25, 64.85], [-70.37, 64.8], [-70.25, 64.5], [-70.47, 63.97], [-70.82, 63.82], [-70.97, 63.47], [-71.5, 63.25], [-71.75, 63.35], [-72.0, 63.25], [-72.25, 63.35], [-72.5, 63.25], [-72.75, 63.35], [-73.0, 63.25], [-73.53, 63.47], [-73.68, 63.82], [-73.75, 63.85], [-74.0, 63.75], [-74.25, 63.85], [-74.5, 63.75], [-74.75, 63.85], [-75.0, 63.75], [-75.53, 63.97], [-75.75, 64.5], [-75.65, 64.75], [-75.68, 64.82], [-75.75, 64.85], [-76.0, 64.75], [-76.53, 64.97], [-76.75, 65.5], [-76.65, 65.75], [-76.75, 66.0], [-76.53, 66.53]]]]}, "2019-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.53, 66.53], [-76.18, 66.68], [-76.03, 67.03], [-75.5, 67.25], [-75.25, 67.15], [-75.0, 67.25], [-74.75, 67.15], [-74.5, 67.25], [-74.25, 67.15], [-74.0, 67.25], [-73.47, 67.03], [-73.25, 66.5], [-73.37, 66.2], [-73.25, 66.15], [-73.0, 66.25], [-72.75, 66.15], [-72.68, 66.18], [-72.53, 66.53], [-72.0, 66.75], [-71.47, 66.53], [-71.32, 66.18], [-71.25, 66.15], [-71.0, 66.25], [-70.75, 66.15], [-70.5, 66.25], [-70.25, 66.15], [-70.0, 66.25], [-69.47, 66.03], [-69.25, 65.5], [-69.47, 64.97], [-70.0, 64.75], [-70.25, 64.85], [-70.37, 64.8], [-70.25, 64.5], [-70.47, 63.97], [-70.82, 63.82], [-70.97, 63.47], [-71.5, 63.25], [-71.75, 63.35], [-72.0, 63.25], [-72.25, 63.35], [-72.5, 63.25], [-72.75, 63.35], [-73.0, 63.25], [-73.53, 63.47], [-73.68, 63.82], [-73.75, 63.85], [-74.0, 63.75], [-74.25, 63.85], [-74.5, 63.75], [-74.75, 63.85], [-75.0, 63.75], [-75.53, 63.97], [-75.75, 64.5], [-75.65, 64.75], [-75.68, 64.82], [-75.75, 64.85], [-76.0, 64.75], [-76.53, 64.97], [-76.75, 65.5], [-76.65, 65.75], [-76.75, 66.0], [-76.53, 66.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.961270010224325}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.939062631797318}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-8.098778048458257, -7.180476437066318, -8.155869590575776]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-6.816714305376138, -6.0008161124588355, -6.471670921304337]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.788936380895554, 8.62092964874274, 7.407321865753668]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.038361360937017, 9.961270010224325, 8.5099710729437]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6150967953085522, 1.7942330727879738, 1.5124628105090179]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7869877539832213, 1.9378531449118765, 1.621966550174945]}}