{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:50.682229", "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-Feb-17_to_2011-Feb-19_283.5_40.0"}, "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": 2011020002147}, "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 17 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2011"}, "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": 69607.28042738748}, "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": ["United States"]}, "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": 40.0}, "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": 283.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "283.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 279.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 285.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.68, 38.68], [-79.53, 39.03], [-79.18, 39.18], [-79.15, 39.25], [-79.25, 39.5], [-79.03, 40.03], [-78.5, 40.25], [-78.25, 40.15], [-78.0, 40.25], [-77.75, 40.15], [-77.68, 40.18], [-77.53, 40.53], [-77.0, 40.75], [-76.75, 40.65], [-76.5, 40.75], [-76.25, 40.65], [-76.0, 40.75], [-75.75, 40.65], [-75.5, 40.75], [-75.25, 40.65], [-75.0, 40.75], [-74.75, 40.65], [-74.5, 40.75], [-73.97, 40.53], [-73.75, 40.0], [-73.85, 39.75], [-73.75, 39.5], [-73.97, 38.97], [-74.5, 38.75], [-74.75, 38.85], [-74.82, 38.82], [-74.97, 38.47], [-75.5, 38.25], [-76.03, 38.47], [-76.2, 38.88], [-76.32, 38.82], [-76.35, 38.75], [-76.25, 38.5], [-76.47, 37.97], [-77.0, 37.75], [-77.25, 37.85], [-77.5, 37.75], [-77.75, 37.85], [-77.82, 37.82], [-77.97, 37.47], [-78.5, 37.25], [-78.75, 37.35], [-78.82, 37.32], [-78.97, 36.97], [-79.5, 36.75], [-79.75, 36.85], [-80.0, 36.75], [-80.53, 36.97], [-80.75, 37.5], [-80.53, 38.03], [-80.18, 38.18], [-80.03, 38.53], [-79.68, 38.68]]]]}, "2011-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.68, 38.68], [-79.53, 39.03], [-79.18, 39.18], [-79.15, 39.25], [-79.25, 39.5], [-79.03, 40.03], [-78.5, 40.25], [-78.25, 40.15], [-78.0, 40.25], [-77.75, 40.15], [-77.68, 40.18], [-77.53, 40.53], [-77.0, 40.75], [-76.75, 40.65], [-76.5, 40.75], [-76.25, 40.65], [-76.0, 40.75], [-75.75, 40.65], [-75.5, 40.75], [-75.25, 40.65], [-75.0, 40.75], [-74.75, 40.65], [-74.5, 40.75], [-73.97, 40.53], [-73.75, 40.0], [-73.85, 39.75], [-73.75, 39.5], [-73.97, 38.97], [-74.5, 38.75], [-74.75, 38.85], [-74.82, 38.82], [-74.97, 38.47], [-75.5, 38.25], [-76.03, 38.47], [-76.2, 38.88], [-76.32, 38.82], [-76.35, 38.75], [-76.25, 38.5], [-76.47, 37.97], [-77.0, 37.75], [-77.25, 37.85], [-77.5, 37.75], [-77.75, 37.85], [-77.82, 37.82], [-77.97, 37.47], [-78.5, 37.25], [-78.75, 37.35], [-78.82, 37.32], [-78.97, 36.97], [-79.5, 36.75], [-79.75, 36.85], [-80.0, 36.75], [-80.53, 36.97], [-80.75, 37.5], [-80.53, 38.03], [-80.18, 38.18], [-80.03, 38.53], [-79.68, 38.68]]]]}, "2011-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.68, 38.68], [-79.53, 39.03], [-79.18, 39.18], [-79.15, 39.25], [-79.25, 39.5], [-79.03, 40.03], [-78.5, 40.25], [-78.25, 40.15], [-78.0, 40.25], [-77.75, 40.15], [-77.68, 40.18], [-77.53, 40.53], [-77.0, 40.75], [-76.75, 40.65], [-76.5, 40.75], [-76.25, 40.65], [-76.0, 40.75], [-75.75, 40.65], [-75.5, 40.75], [-75.25, 40.65], [-75.0, 40.75], [-74.75, 40.65], [-74.5, 40.75], [-73.97, 40.53], [-73.75, 40.0], [-73.85, 39.75], [-73.75, 39.5], [-73.97, 38.97], [-74.5, 38.75], [-74.75, 38.85], [-74.82, 38.82], [-74.97, 38.47], [-75.5, 38.25], [-76.03, 38.47], [-76.2, 38.88], [-76.32, 38.82], [-76.35, 38.75], [-76.25, 38.5], [-76.47, 37.97], [-77.0, 37.75], [-77.25, 37.85], [-77.5, 37.75], [-77.75, 37.85], [-77.82, 37.82], [-77.97, 37.47], [-78.5, 37.25], [-78.75, 37.35], [-78.82, 37.32], [-78.97, 36.97], [-79.5, 36.75], [-79.75, 36.85], [-80.0, 36.75], [-80.53, 36.97], [-80.75, 37.5], [-80.53, 38.03], [-80.18, 38.18], [-80.03, 38.53], [-79.68, 38.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 13.040752322072933}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.013721674413235}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.245169414255372, 14.361607869039915, 10.736197156470098]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.139824135367292, 16.221056749596244, 13.14063929090861]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.89254639432604, 11.568739115592784, 7.579879513320887]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.569671583520687, 13.040752322072933, 8.717593050876076]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5454714758483523, 2.1698509967421056, 1.4450603046343982]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8155827144917434, 2.41487835601873, 1.642466477862292]}}