{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:59.865238", "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": "2016-Aug-08_to_2016-Aug-10_243.5_46.5"}, "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": 2016080000320}, "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": "August 08 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 10 2016"}, "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": 53712.69941571714}, "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": ["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": []}, "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": 46.5}, "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": 243.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "243.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 240.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 245.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.75, 48.0], [-119.53, 48.53], [-119.0, 48.75], [-118.75, 48.65], [-118.68, 48.68], [-118.53, 49.03], [-118.18, 49.18], [-118.03, 49.53], [-117.5, 49.75], [-117.25, 49.65], [-117.0, 49.75], [-116.5, 49.54], [-116.0, 49.75], [-115.75, 49.65], [-115.5, 49.75], [-114.97, 49.53], [-114.82, 49.18], [-114.47, 49.03], [-114.25, 48.5], [-114.47, 47.97], [-114.82, 47.82], [-114.97, 47.47], [-115.32, 47.32], [-115.47, 46.97], [-115.87, 46.8], [-115.75, 46.5], [-115.97, 45.97], [-116.5, 45.75], [-116.75, 45.85], [-117.0, 45.75], [-117.53, 45.97], [-117.68, 46.32], [-118.03, 46.47], [-118.2, 46.88], [-118.5, 46.75], [-119.03, 46.97], [-119.18, 47.32], [-119.53, 47.47], [-119.75, 48.0]]]]}, "2016-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.75, 48.0], [-119.53, 48.53], [-119.0, 48.75], [-118.75, 48.65], [-118.68, 48.68], [-118.53, 49.03], [-118.18, 49.18], [-118.03, 49.53], [-117.5, 49.75], [-117.25, 49.65], [-117.0, 49.75], [-116.5, 49.54], [-116.0, 49.75], [-115.75, 49.65], [-115.5, 49.75], [-114.97, 49.53], [-114.82, 49.18], [-114.47, 49.03], [-114.25, 48.5], [-114.47, 47.97], [-114.82, 47.82], [-114.97, 47.47], [-115.32, 47.32], [-115.47, 46.97], [-115.87, 46.8], [-115.75, 46.5], [-115.97, 45.97], [-116.5, 45.75], [-116.75, 45.85], [-117.0, 45.75], [-117.53, 45.97], [-117.68, 46.32], [-118.03, 46.47], [-118.2, 46.88], [-118.5, 46.75], [-119.03, 46.97], [-119.18, 47.32], [-119.53, 47.47], [-119.75, 48.0]]]]}, "2016-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.75, 48.0], [-119.53, 48.53], [-119.0, 48.75], [-118.75, 48.65], [-118.68, 48.68], [-118.53, 49.03], [-118.18, 49.18], [-118.03, 49.53], [-117.5, 49.75], [-117.25, 49.65], [-117.0, 49.75], [-116.5, 49.54], [-116.0, 49.75], [-115.75, 49.65], [-115.5, 49.75], [-114.97, 49.53], [-114.82, 49.18], [-114.47, 49.03], [-114.25, 48.5], [-114.47, 47.97], [-114.82, 47.82], [-114.97, 47.47], [-115.32, 47.32], [-115.47, 46.97], [-115.87, 46.8], [-115.75, 46.5], [-115.97, 45.97], [-116.5, 45.75], [-116.75, 45.85], [-117.0, 45.75], [-117.53, 45.97], [-117.68, 46.32], [-118.03, 46.47], [-118.2, 46.88], [-118.5, 46.75], [-119.03, 46.97], [-119.18, 47.32], [-119.53, 47.47], [-119.75, 48.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.583768001550254}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.666948653412814}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.399669019374869, 14.449367618244594, 14.387263727390462]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.819414358054814, 11.950090848630111, 10.867543637322512]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.1437360048793215, -5.92610639370603, -5.93100356165309]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.287848625740651, -6.87861480209898, -7.583768001550254]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.598486316547291, -1.7834102117456863, -1.7429403175002385]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9584134147957712, -2.0720855347052147, -2.1134685532767126]}}