{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:34.486424", "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-Jun-07_to_2016-Jun-10_275.0_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": 2016060000207}, "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 07 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 10 2016"}, "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": 75317.13470661502}, "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": 275.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "275.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 271.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 277.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.25, 55.5], [-89.03, 56.03], [-88.68, 56.18], [-88.53, 56.53], [-88.0, 56.75], [-87.75, 56.65], [-87.5, 56.75], [-86.97, 56.53], [-86.82, 56.18], [-86.75, 56.15], [-86.5, 56.25], [-86.25, 56.15], [-86.0, 56.25], [-85.47, 56.03], [-85.32, 55.68], [-85.25, 55.65], [-85.0, 55.75], [-84.75, 55.65], [-84.5, 55.75], [-84.25, 55.65], [-84.0, 55.75], [-83.47, 55.53], [-83.32, 55.18], [-82.97, 55.03], [-82.82, 54.68], [-82.47, 54.53], [-82.25, 54.0], [-82.35, 53.75], [-82.25, 53.5], [-82.47, 52.97], [-82.82, 52.82], [-82.97, 52.47], [-83.5, 52.25], [-83.75, 52.35], [-84.0, 52.25], [-84.53, 52.47], [-84.68, 52.82], [-84.75, 52.85], [-85.0, 52.75], [-85.25, 52.85], [-85.5, 52.75], [-86.03, 52.97], [-86.25, 53.5], [-86.15, 53.75], [-86.18, 53.82], [-86.25, 53.85], [-86.5, 53.75], [-86.75, 53.85], [-87.0, 53.75], [-87.53, 53.97], [-87.68, 54.32], [-87.75, 54.35], [-88.0, 54.25], [-88.53, 54.47], [-88.68, 54.82], [-89.03, 54.97], [-89.25, 55.5]]]]}, "2016-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.25, 55.5], [-89.03, 56.03], [-88.68, 56.18], [-88.53, 56.53], [-88.0, 56.75], [-87.75, 56.65], [-87.5, 56.75], [-86.97, 56.53], [-86.82, 56.18], [-86.75, 56.15], [-86.5, 56.25], [-86.25, 56.15], [-86.0, 56.25], [-85.47, 56.03], [-85.32, 55.68], [-85.25, 55.65], [-85.0, 55.75], [-84.75, 55.65], [-84.5, 55.75], [-84.25, 55.65], [-84.0, 55.75], [-83.47, 55.53], [-83.32, 55.18], [-83.2, 55.12], [-83.03, 55.53], [-82.5, 55.75], [-81.97, 55.53], [-81.75, 55.0], [-81.85, 54.75], [-81.75, 54.5], [-81.85, 54.25], [-81.75, 54.0], [-81.97, 53.47], [-82.32, 53.32], [-82.47, 52.97], [-82.82, 52.82], [-82.97, 52.47], [-83.5, 52.25], [-83.75, 52.35], [-84.0, 52.25], [-84.53, 52.47], [-84.68, 52.82], [-84.75, 52.85], [-85.0, 52.75], [-85.25, 52.85], [-85.5, 52.75], [-86.03, 52.97], [-86.25, 53.5], [-86.15, 53.75], [-86.18, 53.82], [-86.25, 53.85], [-86.5, 53.75], [-86.75, 53.85], [-87.0, 53.75], [-87.53, 53.97], [-87.68, 54.32], [-87.75, 54.35], [-88.0, 54.25], [-88.53, 54.47], [-88.68, 54.82], [-89.03, 54.97], [-89.25, 55.5]]]]}, "2016-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.25, 55.5], [-89.03, 56.03], [-88.68, 56.18], [-88.53, 56.53], [-88.0, 56.75], [-87.75, 56.65], [-87.5, 56.75], [-86.97, 56.53], [-86.82, 56.18], [-86.75, 56.15], [-86.5, 56.25], [-86.25, 56.15], [-86.0, 56.25], [-85.47, 56.03], [-85.32, 55.68], [-85.25, 55.65], [-85.0, 55.75], [-84.75, 55.65], [-84.5, 55.75], [-84.25, 55.65], [-84.0, 55.75], [-83.47, 55.53], [-83.32, 55.18], [-83.2, 55.12], [-83.03, 55.53], [-82.5, 55.75], [-81.97, 55.53], [-81.75, 55.0], [-81.85, 54.75], [-81.75, 54.5], [-81.85, 54.25], [-81.75, 54.0], [-81.97, 53.47], [-82.32, 53.32], [-82.47, 52.97], [-82.82, 52.82], [-82.97, 52.47], [-83.5, 52.25], [-83.75, 52.35], [-84.0, 52.25], [-84.53, 52.47], [-84.68, 52.82], [-84.75, 52.85], [-85.0, 52.75], [-85.25, 52.85], [-85.5, 52.75], [-86.03, 52.97], [-86.25, 53.5], [-86.15, 53.75], [-86.18, 53.82], [-86.25, 53.85], [-86.5, 53.75], [-86.75, 53.85], [-87.0, 53.75], [-87.53, 53.97], [-87.68, 54.32], [-87.75, 54.35], [-88.0, 54.25], [-88.53, 54.47], [-88.68, 54.82], [-89.03, 54.97], [-89.25, 55.5]]]]}, "2016-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-83.15, 54.75], [-83.25, 55.0], [-83.03, 55.53], [-82.5, 55.75], [-81.97, 55.53], [-81.75, 55.0], [-81.85, 54.75], [-81.75, 54.5], [-81.85, 54.25], [-81.75, 54.0], [-81.97, 53.47], [-82.5, 53.25], [-83.03, 53.47], [-83.25, 54.0], [-83.15, 54.25], [-83.25, 54.5], [-83.15, 54.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.274794697497612}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.531734510703433}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.019912150039204, 1.7325547266881927, 3.199004089818459, 2.29043647281253]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.724474346401621, 0.3347018319627182, 0.619542065420319, 1.4379633684064856]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.586257469471846, -8.212520144742907, -6.949827290767638, -5.43863824926251]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.045805795943352, -9.274794697497612, -7.687495718864625, -6.1364396665545655]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.449580629057914, -1.5805310071340073, -1.334720270028043, -1.1838175873008334]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7853049771274458, -1.7992967718245756, -1.4419567306800494, -1.2754437515630515]}}