{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:15.739633", "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": "2013-Jan-18_to_2013-Jan-20_299.5_51.0"}, "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": 2013010000600}, "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": "January 18 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2013"}, "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": "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": 63193.7892916201}, "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": 51.0}, "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": 299.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.03, 49.97], [-64.25, 50.5], [-64.03, 51.03], [-63.5, 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49.75], [-61.25, 49.85], [-61.5, 49.75], [-61.75, 49.85], [-62.0, 49.75], [-62.25, 49.85], [-62.5, 49.75], [-62.75, 49.85], [-63.0, 49.75], [-63.25, 49.85], [-63.5, 49.75], [-64.03, 49.97]]]]}, "2013-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.03, 49.97], [-64.25, 50.5], [-64.03, 51.03], [-63.5, 51.25], [-63.25, 51.15], [-63.0, 51.25], [-62.75, 51.15], [-62.68, 51.18], [-62.53, 51.53], [-62.0, 51.75], [-61.75, 51.65], [-61.5, 51.75], [-61.25, 51.65], [-61.0, 51.75], [-60.75, 51.65], [-60.68, 51.68], [-60.53, 52.03], [-60.0, 52.25], [-59.75, 52.15], [-59.5, 52.25], [-59.25, 52.15], [-59.0, 52.25], [-58.75, 52.15], [-58.68, 52.18], [-58.65, 52.25], [-58.68, 52.32], [-59.03, 52.47], [-59.25, 53.0], [-59.03, 53.53], [-58.5, 53.75], [-58.25, 53.65], [-58.18, 53.68], [-58.03, 54.03], [-57.5, 54.25], [-57.25, 54.15], [-57.0, 54.25], [-56.75, 54.15], [-56.5, 54.25], [-55.97, 54.03], [-55.75, 53.5], [-55.85, 53.25], [-55.75, 53.0], [-55.97, 52.47], [-56.32, 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"description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.550784000956022, -1.7437472462909698, -1.3702155906369973]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7711476031322364, -1.9816174857554931, -1.480101397033662]}}