{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:35.314164", "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-14_to_2016-Jun-17_302.0_52.0"}, "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": 2016060000435}, "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 14 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 17 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": 61298.7771474015}, "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": ["Labrador Sea"]}, "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": 52.0}, "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": 302.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "302.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 304.25}, "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": 54.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.53, 51.47], [-58.75, 52.0], [-58.53, 52.53], [-58.0, 52.75], [-57.47, 52.53], [-57.25, 52.0], [-57.47, 51.47], [-58.0, 51.25], [-58.53, 51.47]]], [[[-57.25, 52.5], [-57.03, 53.03], [-56.5, 53.25], [-56.25, 53.15], [-56.0, 53.25], [-55.47, 53.03], [-55.25, 52.5], [-55.47, 51.97], [-56.0, 51.75], [-56.25, 51.85], [-56.5, 51.75], [-57.03, 51.97], [-57.25, 52.5]]]]}, "2016-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.53, 54.03], [-60.12, 54.2], [-60.25, 54.5], [-60.03, 55.03], [-59.5, 55.25], [-58.97, 55.03], [-58.82, 54.68], [-58.75, 54.65], [-58.5, 54.75], [-58.0, 54.54], [-57.5, 54.75], [-56.97, 54.53], [-56.82, 54.18], [-56.75, 54.15], [-56.5, 54.25], [-56.25, 54.15], [-56.0, 54.25], [-55.47, 54.03], [-55.25, 53.5], [-55.35, 53.25], [-55.25, 53.0], [-55.35, 52.75], [-55.25, 52.5], [-55.47, 51.97], [-56.0, 51.75], [-56.25, 51.85], [-56.32, 51.82], [-56.47, 51.47], [-57.0, 51.25], [-57.25, 51.35], [-57.5, 51.25], [-57.75, 51.35], [-58.0, 51.25], [-58.53, 51.47], [-58.68, 51.82], [-58.75, 51.85], [-59.0, 51.75], [-59.25, 51.85], [-59.5, 51.75], [-60.03, 51.97], [-60.18, 52.32], [-60.53, 52.47], [-60.75, 53.0], [-60.65, 53.25], [-60.75, 53.5], [-60.53, 54.03]]]]}, "2016-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.53, 54.03], [-60.12, 54.2], [-60.25, 54.5], [-60.03, 55.03], [-59.5, 55.25], [-58.97, 55.03], [-58.82, 54.68], [-58.75, 54.65], [-58.5, 54.75], [-58.0, 54.54], [-57.5, 54.75], [-56.97, 54.53], [-56.82, 54.18], [-56.75, 54.15], [-56.5, 54.25], [-56.25, 54.15], [-56.0, 54.25], [-55.47, 54.03], [-55.25, 53.5], [-55.35, 53.25], [-55.25, 53.0], [-55.35, 52.75], [-55.25, 52.5], [-55.47, 51.97], [-56.0, 51.75], [-56.25, 51.85], [-56.32, 51.82], [-56.47, 51.47], [-57.0, 51.25], [-57.25, 51.35], [-57.5, 51.25], [-57.75, 51.35], [-58.0, 51.25], [-58.53, 51.47], [-58.68, 51.82], [-58.75, 51.85], [-59.0, 51.75], [-59.25, 51.85], [-59.5, 51.75], [-60.03, 51.97], [-60.18, 52.32], [-60.53, 52.47], [-60.75, 53.0], [-60.65, 53.25], [-60.75, 53.5], [-60.53, 54.03]]]]}, "2016-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.53, 54.03], [-60.12, 54.2], [-60.25, 54.5], [-60.03, 55.03], [-59.5, 55.25], [-58.97, 55.03], [-58.82, 54.68], [-58.75, 54.65], [-58.5, 54.75], [-58.0, 54.54], [-57.5, 54.75], [-56.97, 54.53], [-56.82, 54.18], [-56.75, 54.15], [-56.5, 54.25], [-56.25, 54.15], [-56.0, 54.25], [-55.47, 54.03], [-55.25, 53.5], [-55.35, 53.25], [-55.25, 53.0], [-55.35, 52.75], [-55.25, 52.5], [-55.47, 51.97], [-56.0, 51.75], [-56.25, 51.85], [-56.32, 51.82], [-56.47, 51.47], [-57.0, 51.25], [-57.25, 51.35], [-57.5, 51.25], [-57.75, 51.35], [-58.0, 51.25], [-58.53, 51.47], [-58.68, 51.82], [-58.75, 51.85], [-59.0, 51.75], [-59.25, 51.85], [-59.5, 51.75], [-60.03, 51.97], [-60.18, 52.32], [-60.53, 52.47], [-60.75, 53.0], [-60.65, 53.25], [-60.75, 53.5], [-60.53, 54.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.319388366556666}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.1523923317508755}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.415572804758256, 3.902526881961421, 3.837970235522562, 4.89037846391534]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.65409149920373, 1.8105697358363955, 2.317391811498055, 3.1071187216899148]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.3036913712159235, -6.181139445580562, -6.606806156468134, -5.837295116888924]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.927531847956288, -8.049494362206417, -8.319388366556666, -7.02191250824859]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.202441996208676, -1.5203384662186843, -1.6014673702023199, -1.4043142104785185]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2542205814650997, -1.8610170456999016, -1.8988318859718614, -1.5828503528937692]}}