{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:41.685737", "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": "2017-Apr-04_to_2017-Apr-06_279.5_58.5"}, "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": 2017040001344}, "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 04 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 06 2017"}, "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": 71631.93063881928}, "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 Bay"]}, "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": 58.5}, "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": 279.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "279.5\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": 56.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 59.53], [-81.68, 59.68], [-81.53, 60.03], [-81.0, 60.25], [-80.75, 60.15], [-80.5, 60.25], [-80.25, 60.15], [-80.0, 60.25], [-79.75, 60.15], [-79.5, 60.25], [-78.97, 60.03], [-78.82, 59.68], [-78.75, 59.65], [-78.5, 59.75], [-78.25, 59.65], [-78.0, 59.75], [-77.47, 59.53], [-77.32, 59.18], [-76.97, 59.03], [-76.82, 58.68], [-76.47, 58.53], [-76.32, 58.18], [-75.97, 58.03], [-75.75, 57.5], [-75.97, 56.97], [-76.32, 56.82], [-76.47, 56.47], [-77.0, 56.25], [-77.25, 56.35], [-77.5, 56.25], [-77.75, 56.35], [-78.0, 56.25], [-78.25, 56.35], [-78.5, 56.25], [-79.03, 56.47], [-79.18, 56.82], [-79.25, 56.85], [-79.5, 56.75], [-79.75, 56.85], [-80.0, 56.75], [-80.25, 56.85], [-80.5, 56.75], [-80.75, 56.85], [-81.0, 56.75], [-81.53, 56.97], [-81.75, 57.5], [-81.65, 57.75], [-81.68, 57.82], [-82.03, 57.97], [-82.25, 58.5], [-82.15, 58.75], [-82.25, 59.0], [-82.03, 59.53]]]]}, "2017-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 59.53], [-81.68, 59.68], [-81.53, 60.03], [-81.0, 60.25], [-80.75, 60.15], [-80.5, 60.25], [-80.25, 60.15], [-80.0, 60.25], [-79.75, 60.15], [-79.5, 60.25], [-78.97, 60.03], [-78.82, 59.68], [-78.75, 59.65], [-78.5, 59.75], [-78.25, 59.65], [-78.0, 59.75], [-77.47, 59.53], [-77.32, 59.18], [-76.97, 59.03], [-76.82, 58.68], [-76.47, 58.53], [-76.32, 58.18], [-75.97, 58.03], [-75.75, 57.5], [-75.97, 56.97], [-76.32, 56.82], [-76.47, 56.47], [-77.0, 56.25], [-77.25, 56.35], [-77.5, 56.25], [-77.75, 56.35], [-78.0, 56.25], [-78.25, 56.35], [-78.5, 56.25], [-79.03, 56.47], [-79.18, 56.82], [-79.25, 56.85], [-79.5, 56.75], [-79.75, 56.85], [-80.0, 56.75], [-80.25, 56.85], [-80.5, 56.75], [-80.75, 56.85], [-81.0, 56.75], [-81.53, 56.97], [-81.75, 57.5], [-81.65, 57.75], [-81.68, 57.82], [-82.03, 57.97], [-82.25, 58.5], [-82.15, 58.75], [-82.25, 59.0], [-82.03, 59.53]]]]}, "2017-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 59.53], [-81.68, 59.68], [-81.53, 60.03], [-81.0, 60.25], [-80.75, 60.15], [-80.5, 60.25], [-80.25, 60.15], [-80.0, 60.25], [-79.75, 60.15], [-79.5, 60.25], [-78.97, 60.03], [-78.82, 59.68], [-78.75, 59.65], [-78.5, 59.75], [-78.25, 59.65], [-78.0, 59.75], [-77.47, 59.53], [-77.32, 59.18], [-76.97, 59.03], [-76.82, 58.68], [-76.47, 58.53], [-76.32, 58.18], [-75.97, 58.03], [-75.75, 57.5], [-75.97, 56.97], [-76.32, 56.82], [-76.47, 56.47], [-77.0, 56.25], [-77.25, 56.35], [-77.5, 56.25], [-77.75, 56.35], [-78.0, 56.25], [-78.25, 56.35], [-78.5, 56.25], [-79.03, 56.47], [-79.18, 56.82], [-79.25, 56.85], [-79.5, 56.75], [-79.75, 56.85], [-80.0, 56.75], [-80.25, 56.85], [-80.5, 56.75], [-80.75, 56.85], [-81.0, 56.75], [-81.53, 56.97], [-81.75, 57.5], [-81.65, 57.75], [-81.68, 57.82], [-82.03, 57.97], [-82.25, 58.5], [-82.15, 58.75], [-82.25, 59.0], [-82.03, 59.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 13.015762478916884}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.655861880308056}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-3.957545516369578, -2.0622603388714538, -4.6927310561413265]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.0432032975710968, -0.6784284459314449, -2.807075135022444]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.427918422508025, 10.154086101192478, 7.385581117223651]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.05222787698807, 13.015762478916884, 10.553660128004537]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8382470453722548, 2.2535551536581377, 1.6371590108827443]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2947366955851507, 2.5476385502474246, 1.8390797629254454]}}