{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:10.278954", "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": "2010-Feb-15_to_2010-Feb-19_260.0_56.5"}, "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": 2010020001697}, "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": "February 15 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 58067.77346196184}, "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": []}, "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": 56.5}, "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": 260.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "260.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 261.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.03, 56.47], [-99.25, 57.0], [-99.03, 57.53], [-98.5, 57.75], [-97.97, 57.53], [-97.75, 57.0], [-97.97, 56.47], [-98.5, 56.25], [-99.03, 56.47]]], [[[-101.5, 58.75], [-100.97, 58.53], [-100.82, 58.18], [-100.47, 58.03], [-100.25, 57.5], [-100.47, 56.97], [-101.0, 56.75], [-101.25, 56.85], [-101.5, 56.75], [-102.03, 56.97], [-102.25, 57.5], [-102.15, 57.75], [-102.25, 58.0], [-102.03, 58.53], [-101.5, 58.75]]]]}, "2010-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.25, 58.0], [-103.03, 58.53], [-102.5, 58.75], [-102.25, 58.65], [-102.0, 58.75], [-101.75, 58.65], [-101.5, 58.75], [-100.97, 58.53], [-100.82, 58.18], [-100.47, 58.03], [-100.32, 57.68], [-100.25, 57.65], [-100.0, 57.75], [-99.75, 57.65], [-99.5, 57.75], [-99.0, 57.54], [-98.5, 57.75], [-97.97, 57.53], [-97.75, 57.0], [-97.85, 56.75], [-97.75, 56.5], [-97.97, 55.97], [-98.5, 55.75], [-98.75, 55.85], [-99.0, 55.75], [-99.25, 55.85], [-99.5, 55.75], [-99.75, 55.85], [-99.82, 55.82], [-99.97, 55.47], [-100.5, 55.25], [-101.03, 55.47], [-101.18, 55.82], [-101.25, 55.85], [-101.5, 55.75], [-102.03, 55.97], [-102.18, 56.32], [-102.53, 56.47], [-102.75, 57.0], [-102.65, 57.25], [-102.68, 57.32], [-103.03, 57.47], [-103.25, 58.0]]]]}, "2010-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.25, 58.0], [-103.03, 58.53], [-102.5, 58.75], [-102.25, 58.65], [-102.0, 58.75], [-101.75, 58.65], [-101.5, 58.75], [-100.97, 58.53], [-100.82, 58.18], [-100.47, 58.03], [-100.32, 57.68], [-100.25, 57.65], [-100.0, 57.75], [-99.75, 57.65], [-99.5, 57.75], [-99.0, 57.54], [-98.5, 57.75], [-97.97, 57.53], [-97.75, 57.0], [-97.85, 56.75], [-97.75, 56.5], [-97.85, 56.25], [-97.75, 56.0], [-97.97, 55.47], [-98.32, 55.32], [-98.35, 55.25], [-98.25, 55.0], [-98.47, 54.47], [-99.0, 54.25], [-99.25, 54.35], [-99.5, 54.25], [-99.75, 54.35], [-100.0, 54.25], [-100.53, 54.47], [-100.68, 54.82], [-100.75, 54.85], [-101.0, 54.75], [-101.53, 54.97], [-101.75, 55.5], [-101.65, 55.75], [-101.68, 55.82], [-102.03, 55.97], [-102.18, 56.32], [-102.53, 56.47], [-102.75, 57.0], [-102.65, 57.25], [-102.68, 57.32], [-103.03, 57.47], [-103.25, 58.0]]]]}, "2010-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.25, 58.0], [-103.03, 58.53], [-102.5, 58.75], [-102.25, 58.65], [-102.0, 58.75], [-101.75, 58.65], [-101.5, 58.75], [-100.97, 58.53], [-100.82, 58.18], [-100.47, 58.03], [-100.32, 57.68], [-100.25, 57.65], [-100.0, 57.75], [-99.75, 57.65], [-99.5, 57.75], [-98.97, 57.53], [-98.82, 57.18], [-98.75, 57.15], [-98.5, 57.25], [-97.97, 57.03], [-97.75, 56.5], [-97.85, 56.25], [-97.75, 56.0], [-97.97, 55.47], [-98.32, 55.32], [-98.35, 55.25], [-98.25, 55.0], [-98.47, 54.47], [-99.0, 54.25], [-99.25, 54.35], [-99.5, 54.25], [-99.75, 54.35], [-100.0, 54.25], [-100.53, 54.47], [-100.68, 54.82], [-100.75, 54.85], [-101.0, 54.75], [-101.53, 54.97], [-101.75, 55.5], [-101.65, 55.75], [-101.68, 55.82], [-102.03, 55.97], [-102.18, 56.32], [-102.53, 56.47], [-102.75, 57.0], [-102.65, 57.25], [-102.68, 57.32], [-103.03, 57.47], [-103.25, 58.0]]]]}, "2010-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.18, 56.68], [-101.03, 57.03], [-100.5, 57.25], [-100.25, 57.15], [-100.18, 57.18], [-100.03, 57.53], [-99.5, 57.75], [-98.97, 57.53], [-98.82, 57.18], [-98.75, 57.15], [-98.5, 57.25], [-97.97, 57.03], [-97.75, 56.5], [-97.85, 56.25], [-97.75, 56.0], [-97.97, 55.47], [-98.32, 55.32], [-98.35, 55.25], [-98.25, 55.0], [-98.47, 54.47], [-99.0, 54.25], [-99.25, 54.35], [-99.5, 54.25], [-99.75, 54.35], [-100.0, 54.25], [-100.53, 54.47], [-100.68, 54.82], [-100.75, 54.85], [-101.0, 54.75], [-101.53, 54.97], [-101.75, 55.5], [-101.65, 55.75], [-101.75, 56.0], [-101.53, 56.53], [-101.18, 56.68]]], [[[-103.25, 58.0], [-103.03, 58.53], [-102.5, 58.75], [-102.25, 58.65], [-102.0, 58.75], [-101.47, 58.53], [-101.25, 58.0], [-101.47, 57.47], [-102.0, 57.25], [-102.25, 57.35], [-102.5, 57.25], [-103.03, 57.47], [-103.25, 58.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 13.553571111449287}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 11.104917927579852}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-12.06707649573616, -10.625834760877751, -9.826221378635637, -7.181298733668086, -6.750720293181018]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-10.797211666372107, -9.297061189459498, -7.413199794343257, -4.941500781286777, -5.015128225095111]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.641732349870693, 10.026093560187633, 10.108804158834932, 12.361644002904566, 12.055098003838266]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily 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