{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:56.190509", "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": "2015-Apr-28_to_2015-May-01_235.0_73.5"}, "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": 2015040002759}, "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 28 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 01 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 52203.27142634307}, "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.W.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": ["Arctic Ocean", "Beaufort Sea", "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": 73.5}, "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": 235.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "235.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 232.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 240.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 72.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 76.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.53, 75.03], [-127.0, 75.25], [-126.75, 75.15], [-126.5, 75.25], [-126.25, 75.15], [-126.0, 75.25], [-125.75, 75.15], [-125.5, 75.25], [-125.25, 75.15], [-125.0, 75.25], [-124.75, 75.15], [-124.68, 75.18], [-124.53, 75.53], [-124.0, 75.75], [-123.75, 75.65], [-123.5, 75.75], [-123.25, 75.65], [-123.0, 75.75], [-122.47, 75.53], [-122.32, 75.18], [-122.25, 75.15], [-122.0, 75.25], [-121.75, 75.15], [-121.5, 75.25], [-120.97, 75.03], [-120.75, 74.5], [-120.97, 73.97], [-121.5, 73.75], [-121.75, 73.85], [-122.0, 73.75], [-122.25, 73.85], [-122.32, 73.82], [-122.47, 73.47], [-123.0, 73.25], [-123.25, 73.35], [-123.32, 73.32], [-123.47, 72.97], [-124.0, 72.75], [-124.25, 72.85], [-124.5, 72.75], [-124.75, 72.85], [-125.0, 72.75], [-125.25, 72.85], [-125.5, 72.75], [-126.03, 72.97], [-126.18, 73.32], [-126.25, 73.35], [-126.5, 73.25], [-126.75, 73.35], [-127.0, 73.25], [-127.53, 73.47], [-127.75, 74.0], [-127.65, 74.25], [-127.75, 74.5], [-127.53, 75.03]]]]}, "2015-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.53, 75.03], [-127.18, 75.18], [-127.03, 75.53], [-126.68, 75.68], [-126.53, 76.03], [-126.18, 76.18], [-126.03, 76.53], [-125.68, 76.68], [-125.53, 77.03], [-125.0, 77.25], [-124.75, 77.15], [-124.5, 77.25], [-124.25, 77.15], [-124.0, 77.25], [-123.75, 77.15], [-123.5, 77.25], [-123.25, 77.15], [-123.0, 77.25], [-122.47, 77.03], [-122.32, 76.68], [-122.25, 76.65], [-122.0, 76.75], [-121.75, 76.65], [-121.5, 76.75], [-121.25, 76.65], [-121.0, 76.75], [-120.47, 76.53], [-120.32, 76.18], [-120.25, 76.15], [-120.0, 76.25], [-119.47, 76.03], [-119.25, 75.5], [-119.47, 74.97], [-120.0, 74.75], [-120.25, 74.85], [-120.5, 74.75], [-120.75, 74.85], [-120.87, 74.8], [-120.75, 74.5], [-120.97, 73.97], [-121.5, 73.75], [-121.75, 73.85], [-122.0, 73.75], [-122.25, 73.85], [-122.32, 73.82], [-122.47, 73.47], [-123.0, 73.25], [-123.25, 73.35], [-123.32, 73.32], [-123.47, 72.97], [-123.82, 72.82], [-123.97, 72.47], [-124.5, 72.25], [-124.75, 72.35], [-125.0, 72.25], [-125.53, 72.47], [-125.68, 72.82], [-125.75, 72.85], [-126.0, 72.75], [-126.25, 72.85], [-126.5, 72.75], [-127.03, 72.97], [-127.18, 73.32], [-127.53, 73.47], [-127.75, 74.0], [-127.65, 74.25], [-127.75, 74.5], [-127.53, 75.03]]]]}, "2015-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.53, 75.03], [-127.18, 75.18], [-127.03, 75.53], [-126.68, 75.68], [-126.53, 76.03], [-126.18, 76.18], [-126.03, 76.53], [-125.68, 76.68], [-125.53, 77.03], [-125.0, 77.25], [-124.75, 77.15], [-124.5, 77.25], [-124.25, 77.15], [-124.0, 77.25], [-123.75, 77.15], [-123.5, 77.25], [-123.25, 77.15], [-123.0, 77.25], [-122.47, 77.03], [-122.32, 76.68], [-122.25, 76.65], [-122.0, 76.75], [-121.75, 76.65], [-121.5, 76.75], [-121.25, 76.65], [-121.0, 76.75], [-120.47, 76.53], [-120.32, 76.18], [-120.25, 76.15], [-120.0, 76.25], [-119.47, 76.03], [-119.25, 75.5], [-119.47, 74.97], [-120.0, 74.75], [-120.25, 74.85], [-120.5, 74.75], [-120.75, 74.85], [-120.87, 74.8], [-120.75, 74.5], [-120.97, 73.97], [-121.5, 73.75], [-121.75, 73.85], [-122.0, 73.75], [-122.25, 73.85], [-122.32, 73.82], [-122.47, 73.47], [-123.0, 73.25], [-123.25, 73.35], [-123.32, 73.32], [-123.47, 72.97], [-123.82, 72.82], [-123.97, 72.47], [-124.5, 72.25], [-124.75, 72.35], [-125.0, 72.25], [-125.53, 72.47], [-125.68, 72.82], [-125.75, 72.85], [-126.0, 72.75], [-126.25, 72.85], [-126.5, 72.75], [-127.03, 72.97], [-127.18, 73.32], [-127.53, 73.47], [-127.75, 74.0], [-127.65, 74.25], [-127.75, 74.5], [-127.53, 75.03]]]]}, "2015-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-126.68, 75.68], [-126.53, 76.03], [-126.18, 76.18], [-126.03, 76.53], [-125.68, 76.68], [-125.53, 77.03], [-125.0, 77.25], [-124.75, 77.15], [-124.5, 77.25], [-124.25, 77.15], [-124.0, 77.25], [-123.75, 77.15], [-123.5, 77.25], [-123.25, 77.15], [-123.0, 77.25], [-122.47, 77.03], [-122.32, 76.68], [-122.25, 76.65], [-122.0, 76.75], [-121.75, 76.65], [-121.5, 76.75], [-121.25, 76.65], [-121.0, 76.75], [-120.47, 76.53], [-120.32, 76.18], 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entire duration", "value": 5.995540537918512}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-6.224094464754103, -5.5814908608659834, -6.104748977663007, -6.207117251955992]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-4.906121924795741, -4.3303279291481545, -3.0928283101696366, -3.3532003332129534]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.074518825451311, 6.636253878212251, 5.827955349057948, 5.427183263882733]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.6193266662511405, 7.120530858515167, 7.612213124709115, 6.856577421682857]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5015654175945752, 1.7091698937210262, 1.5393418587193823, 1.5246376677234443]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6233537548441566, 1.895299452014928, 1.7914877264792097, 1.7696526178649035]}}