{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:37.308132", "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": "2022-Jul-03_to_2022-Jul-06_290.0_53.5"}, "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": 2022070000228}, "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": "July 03 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2022"}, "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": 115733.94872479778}, "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": 53.5}, "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": 290.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 293.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, 54.53], [-72.68, 54.68], [-72.53, 55.03], [-72.18, 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"MultiPolygon", "coordinates": [[[[-73.03, 54.53], [-72.68, 54.68], [-72.53, 55.03], [-72.18, 55.18], [-72.03, 55.53], [-71.5, 55.75], [-71.25, 55.65], [-71.0, 55.75], [-70.75, 55.65], [-70.5, 55.75], [-70.25, 55.65], [-70.0, 55.75], [-69.75, 55.65], [-69.5, 55.75], [-69.25, 55.65], [-69.0, 55.75], [-68.47, 55.53], [-68.32, 55.18], [-68.25, 55.15], [-68.0, 55.25], [-67.75, 55.15], [-67.5, 55.25], [-67.25, 55.15], [-67.0, 55.25], [-66.47, 55.03], [-66.25, 54.5], [-66.35, 54.25], [-66.25, 54.0], [-66.35, 53.75], [-66.25, 53.5], [-66.47, 52.97], [-66.82, 52.82], [-66.85, 52.75], [-66.82, 52.68], [-66.47, 52.53], [-66.25, 52.0], [-66.47, 51.47], [-67.0, 51.25], [-67.25, 51.35], [-67.5, 51.25], [-67.75, 51.35], [-68.0, 51.25], [-68.25, 51.35], [-68.5, 51.25], [-68.75, 51.35], [-69.0, 51.25], [-69.25, 51.35], [-69.5, 51.25], [-70.03, 51.47], [-70.18, 51.82], [-70.25, 51.85], [-70.5, 51.75], [-70.75, 51.85], [-71.0, 51.75], [-71.53, 51.97], [-71.68, 52.32], [-71.75, 52.35], [-72.0, 52.25], [-72.53, 52.47], [-72.68, 52.82], [-73.03, 52.97], [-73.25, 53.5], [-73.15, 53.75], [-73.25, 54.0], [-73.03, 54.53]]]]}, "2022-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, 54.53], [-72.68, 54.68], [-72.53, 55.03], [-72.18, 55.18], [-72.03, 55.53], [-71.5, 55.75], [-71.25, 55.65], [-71.0, 55.75], [-70.75, 55.65], [-70.5, 55.75], [-70.25, 55.65], [-70.0, 55.75], [-69.75, 55.65], [-69.5, 55.75], [-69.25, 55.65], [-69.0, 55.75], [-68.47, 55.53], [-68.32, 55.18], [-68.25, 55.15], [-68.0, 55.25], [-67.75, 55.15], [-67.5, 55.25], [-67.25, 55.15], [-67.0, 55.25], [-66.47, 55.03], [-66.25, 54.5], [-66.35, 54.25], [-66.25, 54.0], [-66.35, 53.75], [-66.25, 53.5], [-66.47, 52.97], [-66.82, 52.82], [-66.85, 52.75], [-66.82, 52.68], [-66.47, 52.53], [-66.25, 52.0], [-66.47, 51.47], [-67.0, 51.25], [-67.25, 51.35], [-67.5, 51.25], [-67.75, 51.35], [-68.0, 51.25], [-68.25, 51.35], [-68.5, 51.25], [-68.75, 51.35], [-69.0, 51.25], [-69.25, 51.35], [-69.5, 51.25], [-70.03, 51.47], [-70.18, 51.82], [-70.25, 51.85], [-70.5, 51.75], [-70.75, 51.85], [-71.0, 51.75], [-71.53, 51.97], [-71.68, 52.32], [-71.75, 52.35], [-72.0, 52.25], [-72.53, 52.47], [-72.68, 52.82], [-73.03, 52.97], [-73.25, 53.5], [-73.15, 53.75], [-73.25, 54.0], [-73.03, 54.53]]]]}, "2022-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, 51.47], [-69.25, 52.0], [-69.03, 52.53], [-68.5, 52.75], [-68.25, 52.65], [-68.0, 52.75], [-67.75, 52.65], [-67.5, 52.75], [-67.25, 52.65], [-67.0, 52.75], [-66.47, 52.53], [-66.25, 52.0], [-66.47, 51.47], [-67.0, 51.25], [-67.25, 51.35], [-67.5, 51.25], [-67.75, 51.35], [-68.0, 51.25], [-68.25, 51.35], [-68.5, 51.25], [-69.03, 51.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.49830891091176}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.113735821662728}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.7850870489915565, 5.95662891664648, 8.280598049105947, 9.928180193483342]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.720318007127673, 4.8075719266648775, 7.150165805325116, 9.549527294286747]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.264004636324362, -7.234717054205908, -4.986767695943321, -3.91642996559834]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.468837396385709, -8.49830891091176, -5.908703593636687, -4.1198908234073315]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8724358101673313, -2.1642718200058373, -1.485266061094664, -1.3031983728360568]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4084011387568145, -2.5215534114213525, -1.6986585126151368, -1.3774914123591449]}}