{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:10.223272", "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-Jun-20_to_2015-Jun-23_293.0_46.0"}, "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": 2015060000749}, "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": "June 20 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 23 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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 58048.26438163793}, "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", "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": ["Bay of Fundy"]}, "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": 46.0}, "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": 293.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "293.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 296.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.03, 47.53], [-67.5, 47.75], [-67.25, 47.65], [-67.0, 47.75], [-66.47, 47.53], [-66.25, 47.0], [-66.35, 46.75], [-66.25, 46.5], [-66.35, 46.25], [-66.25, 46.0], [-66.47, 45.47], [-67.0, 45.25], [-67.25, 45.35], [-67.5, 45.25], [-67.75, 45.35], [-68.0, 45.25], [-68.53, 45.47], [-68.75, 46.0], [-68.53, 46.53], [-68.12, 46.7], [-68.25, 47.0], [-68.03, 47.53]]]]}, "2015-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, 46.0], [-68.53, 46.53], [-68.12, 46.7], [-68.25, 47.0], [-68.03, 47.53], [-67.5, 47.75], [-67.25, 47.65], [-67.0, 47.75], [-66.75, 47.65], [-66.5, 47.75], [-66.25, 47.65], [-66.0, 47.75], [-65.75, 47.65], [-65.5, 47.75], [-64.97, 47.53], [-64.75, 47.0], [-64.85, 46.75], [-64.82, 46.68], [-64.47, 46.53], [-64.25, 46.0], [-64.35, 45.75], [-64.32, 45.68], [-64.25, 45.65], [-64.0, 45.75], [-63.47, 45.53], [-63.25, 45.0], [-63.47, 44.47], [-64.0, 44.25], [-64.25, 44.35], [-64.32, 44.32], [-64.47, 43.97], [-65.0, 43.75], [-65.25, 43.85], [-65.5, 43.75], [-66.03, 43.97], [-66.25, 44.5], [-66.12, 44.8], [-66.25, 44.85], [-66.5, 44.75], [-66.75, 44.85], [-67.0, 44.75], [-67.25, 44.85], [-67.5, 44.75], [-68.03, 44.97], [-68.18, 45.32], [-68.53, 45.47], [-68.75, 46.0]]]]}, "2015-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, 46.0], [-68.53, 46.53], [-68.12, 46.7], [-68.25, 47.0], [-68.03, 47.53], [-67.5, 47.75], [-67.25, 47.65], [-67.0, 47.75], [-66.75, 47.65], [-66.5, 47.75], [-66.25, 47.65], [-66.0, 47.75], [-65.75, 47.65], [-65.5, 47.75], [-64.97, 47.53], [-64.75, 47.0], [-64.85, 46.75], [-64.82, 46.68], [-64.47, 46.53], [-64.25, 46.0], [-64.35, 45.75], [-64.32, 45.68], [-64.25, 45.65], [-64.0, 45.75], [-63.47, 45.53], [-63.25, 45.0], [-63.47, 44.47], [-64.0, 44.25], [-64.25, 44.35], [-64.32, 44.32], [-64.47, 43.97], [-65.0, 43.75], [-65.25, 43.85], [-65.5, 43.75], [-66.03, 43.97], [-66.25, 44.5], [-66.12, 44.8], [-66.25, 44.85], [-66.5, 44.75], [-66.75, 44.85], [-67.0, 44.75], [-67.25, 44.85], [-67.5, 44.75], [-68.03, 44.97], [-68.18, 45.32], [-68.53, 45.47], [-68.75, 46.0]]]]}, "2015-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, 46.0], [-68.53, 46.53], [-68.12, 46.7], [-68.25, 47.0], [-68.03, 47.53], [-67.5, 47.75], [-67.25, 47.65], [-67.0, 47.75], [-66.75, 47.65], [-66.5, 47.75], [-66.25, 47.65], [-66.0, 47.75], [-65.75, 47.65], [-65.5, 47.75], [-64.97, 47.53], [-64.75, 47.0], [-64.85, 46.75], [-64.82, 46.68], [-64.47, 46.53], [-64.25, 46.0], [-64.35, 45.75], [-64.32, 45.68], [-64.25, 45.65], [-64.0, 45.75], [-63.47, 45.53], [-63.25, 45.0], [-63.47, 44.47], [-64.0, 44.25], [-64.25, 44.35], [-64.32, 44.32], [-64.47, 43.97], [-65.0, 43.75], [-65.25, 43.85], [-65.5, 43.75], [-66.03, 43.97], [-66.25, 44.5], [-66.12, 44.8], [-66.25, 44.85], [-66.5, 44.75], [-66.75, 44.85], [-67.0, 44.75], [-67.25, 44.85], [-67.5, 44.75], [-68.03, 44.97], [-68.18, 45.32], [-68.53, 45.47], [-68.75, 46.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.866287879968013}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.502654563381359}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.103775764046134, 11.945975624669472, 12.444385039484303, 12.45808620474736]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.750775359394481, 10.55870311341755, 10.684352247958714, 11.083862281706104]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.675963564904, -4.7911798371572525, -4.42310456813094, -4.477388395628631]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.09183246984685, -5.590338904916507, -5.866287879968013, -5.397499589986239]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2867517293832038, -1.8701635740126716, -1.6530961798505093, -1.6486392636417992]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3561547586986116, -2.434299468955515, -2.129317694312825, -1.8671007381081501]}}