{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:15.704562", "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-Jun-04_to_2022-Jun-06_309.0_75.5"}, "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": 2022060000251}, "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 04 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 06 2022"}, "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": 69341.87260714469}, "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": ["Greenland"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Greenland/Iceland"]}, "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": 75.5}, "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": 309.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "309.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 305.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 73.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 77.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.03, 77.53], [-54.5, 77.75], [-54.25, 77.65], [-54.0, 77.75], [-53.75, 77.65], [-53.5, 77.75], [-53.25, 77.65], [-53.0, 77.75], [-52.75, 77.65], [-52.5, 77.75], [-52.25, 77.65], [-52.0, 77.75], [-51.75, 77.65], [-51.5, 77.75], [-51.25, 77.65], [-51.0, 77.75], [-50.47, 77.53], [-50.32, 77.18], [-50.25, 77.15], [-50.0, 77.25], [-49.75, 77.15], [-49.5, 77.25], [-49.25, 77.15], [-49.0, 77.25], [-48.47, 77.03], [-48.32, 76.68], [-48.25, 76.65], [-48.0, 76.75], [-47.75, 76.65], [-47.5, 76.75], [-46.97, 76.53], [-46.82, 76.18], [-46.75, 76.15], [-46.5, 76.25], [-45.97, 76.03], [-45.82, 75.68], [-45.47, 75.53], [-45.25, 75.0], [-45.35, 74.75], [-45.25, 74.5], [-45.47, 73.97], [-45.82, 73.82], [-45.97, 73.47], [-46.5, 73.25], [-46.75, 73.35], [-47.0, 73.25], [-47.25, 73.35], [-47.5, 73.25], [-47.75, 73.35], [-48.0, 73.25], [-48.25, 73.35], [-48.5, 73.25], [-48.75, 73.35], [-49.0, 73.25], [-49.25, 73.35], [-49.5, 73.25], [-49.75, 73.35], [-50.0, 73.25], [-50.25, 73.35], [-50.5, 73.25], [-50.75, 73.35], [-51.0, 73.25], [-51.25, 73.35], [-51.5, 73.25], [-51.75, 73.35], [-52.0, 73.25], [-52.53, 73.47], [-52.68, 73.82], [-53.03, 73.97], [-53.18, 74.32], [-53.53, 74.47], [-53.68, 74.82], [-54.03, 74.97], [-54.25, 75.5], [-54.15, 75.75], [-54.18, 75.82], [-54.25, 75.85], [-54.5, 75.75], [-55.03, 75.97], [-55.25, 76.5], [-55.15, 76.75], [-55.25, 77.0], [-55.03, 77.53]]]]}, "2022-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.03, 77.53], [-54.5, 77.75], [-54.25, 77.65], [-54.0, 77.75], [-53.75, 77.65], [-53.5, 77.75], [-53.25, 77.65], [-53.0, 77.75], [-52.75, 77.65], [-52.5, 77.75], [-52.25, 77.65], [-52.0, 77.75], [-51.75, 77.65], [-51.5, 77.75], [-51.25, 77.65], [-51.0, 77.75], [-50.47, 77.53], [-50.32, 77.18], [-50.25, 77.15], [-50.0, 77.25], [-49.75, 77.15], [-49.5, 77.25], [-49.25, 77.15], [-49.0, 77.25], [-48.47, 77.03], [-48.32, 76.68], [-48.25, 76.65], [-48.0, 76.75], [-47.75, 76.65], [-47.5, 76.75], [-46.97, 76.53], [-46.82, 76.18], [-46.75, 76.15], [-46.5, 76.25], [-45.97, 76.03], [-45.82, 75.68], [-45.47, 75.53], [-45.25, 75.0], [-45.35, 74.75], [-45.25, 74.5], [-45.47, 73.97], [-45.82, 73.82], [-45.97, 73.47], [-46.5, 73.25], [-46.75, 73.35], [-47.0, 73.25], [-47.25, 73.35], [-47.5, 73.25], [-47.75, 73.35], [-48.0, 73.25], [-48.25, 73.35], [-48.5, 73.25], [-48.75, 73.35], [-49.0, 73.25], [-49.25, 73.35], [-49.5, 73.25], [-49.75, 73.35], [-50.0, 73.25], [-50.25, 73.35], [-50.5, 73.25], [-50.75, 73.35], [-51.0, 73.25], [-51.25, 73.35], [-51.5, 73.25], [-51.75, 73.35], [-52.0, 73.25], [-52.53, 73.47], [-52.68, 73.82], [-53.03, 73.97], [-53.18, 74.32], [-53.53, 74.47], [-53.68, 74.82], [-54.03, 74.97], [-54.25, 75.5], [-54.15, 75.75], [-54.18, 75.82], [-54.25, 75.85], [-54.5, 75.75], [-55.03, 75.97], [-55.25, 76.5], [-55.15, 76.75], [-55.25, 77.0], [-55.03, 77.53]]]]}, "2022-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.03, 77.53], [-54.5, 77.75], [-54.25, 77.65], [-54.0, 77.75], [-53.75, 77.65], [-53.5, 77.75], [-53.25, 77.65], [-53.0, 77.75], [-52.75, 77.65], [-52.5, 77.75], [-52.25, 77.65], [-52.0, 77.75], [-51.75, 77.65], [-51.5, 77.75], [-51.25, 77.65], [-51.0, 77.75], [-50.47, 77.53], [-50.32, 77.18], [-50.25, 77.15], [-50.0, 77.25], [-49.75, 77.15], [-49.5, 77.25], [-49.25, 77.15], [-49.0, 77.25], [-48.47, 77.03], [-48.32, 76.68], [-48.25, 76.65], [-48.0, 76.75], [-47.75, 76.65], [-47.5, 76.75], [-46.97, 76.53], [-46.82, 76.18], [-46.75, 76.15], [-46.5, 76.25], [-45.97, 76.03], [-45.82, 75.68], [-45.47, 75.53], [-45.25, 75.0], [-45.35, 74.75], [-45.25, 74.5], [-45.47, 73.97], [-45.82, 73.82], [-45.97, 73.47], [-46.5, 73.25], [-46.75, 73.35], [-47.0, 73.25], [-47.25, 73.35], [-47.5, 73.25], [-47.75, 73.35], [-48.0, 73.25], [-48.25, 73.35], [-48.5, 73.25], [-48.75, 73.35], [-49.0, 73.25], [-49.25, 73.35], [-49.5, 73.25], [-49.75, 73.35], [-50.0, 73.25], [-50.25, 73.35], [-50.5, 73.25], [-50.75, 73.35], [-51.0, 73.25], [-51.25, 73.35], [-51.5, 73.25], [-51.75, 73.35], [-52.0, 73.25], [-52.53, 73.47], [-52.68, 73.82], [-53.03, 73.97], [-53.18, 74.32], [-53.53, 74.47], [-53.68, 74.82], [-54.03, 74.97], [-54.25, 75.5], [-54.15, 75.75], [-54.18, 75.82], [-54.25, 75.85], [-54.5, 75.75], [-55.03, 75.97], [-55.25, 76.5], [-55.15, 76.75], [-55.25, 77.0], [-55.03, 77.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.066713677674898}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.434081061621166}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-19.12908202483777, -19.727085198905627, -17.368193849023243]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-20.921085892781804, -22.349579828358372, -19.47620835663338]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.473048918371957, -7.417176939178982, -5.412017327312565]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.670749403068669, -8.066713677674898, -6.115540162240819]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7570164646374113, -1.9940988698898903, -1.4363116224546486]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.118675296386636, -2.143186625467849, -1.6327054953596007]}}