{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:22.095788", "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": "2024-Jul-03_to_2024-Jul-07_338.5_65.0"}, "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": 2024070000127}, "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 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 07 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 61575.89662481421}, "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": ["Iceland"]}, "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": ["Europe"]}, "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": ["Greenland Sea", "North Atlantic Ocean"]}, "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": 65.0}, "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": 338.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "338.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 336.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 346.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 64.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 66.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-23.75, 66.0], [-23.53, 66.53], [-23.0, 66.75], [-22.75, 66.65], [-22.5, 66.75], [-22.25, 66.65], [-22.0, 66.75], [-21.47, 66.53], [-21.32, 66.18], [-20.97, 66.03], [-20.75, 65.5], [-20.85, 65.25], [-20.75, 65.0], [-20.97, 64.47], [-21.5, 64.25], [-21.75, 64.35], [-22.0, 64.25], [-22.25, 64.35], [-22.5, 64.25], [-23.03, 64.47], [-23.25, 65.0], [-23.15, 65.25], [-23.18, 65.32], [-23.53, 65.47], [-23.75, 66.0]]]]}, "2024-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-23.75, 66.0], [-23.53, 66.53], [-23.0, 66.75], [-22.75, 66.65], [-22.5, 66.75], [-22.25, 66.65], [-22.0, 66.75], [-21.47, 66.53], [-21.32, 66.18], [-21.25, 66.15], [-21.0, 66.25], [-20.7, 66.13], [-20.53, 66.53], [-20.0, 66.75], [-19.75, 66.65], [-19.5, 66.75], [-19.25, 66.65], [-19.0, 66.75], [-18.75, 66.65], [-18.5, 66.75], [-18.25, 66.65], [-18.0, 66.75], [-17.75, 66.65], [-17.5, 66.75], [-17.25, 66.65], [-17.0, 66.75], [-16.75, 66.65], [-16.68, 66.68], [-16.53, 67.03], [-16.0, 67.25], [-15.47, 67.03], [-15.32, 66.68], [-15.25, 66.65], [-15.0, 66.75], [-14.47, 66.53], [-14.32, 66.18], [-13.97, 66.03], [-13.75, 65.5], [-13.97, 64.97], [-14.5, 64.75], [-14.75, 64.85], [-14.82, 64.82], [-14.97, 64.47], [-15.5, 64.25], [-15.75, 64.35], [-16.0, 64.25], [-16.25, 64.35], [-16.5, 64.25], [-16.75, 64.35], [-17.0, 64.25], [-17.25, 64.35], [-17.5, 64.25], [-18.03, 64.47], [-18.18, 64.82], [-18.25, 64.85], [-18.32, 64.82], [-18.47, 64.47], [-19.0, 64.25], [-19.25, 64.35], [-19.5, 64.25], [-19.75, 64.35], [-20.0, 64.25], [-20.25, 64.35], [-20.5, 64.25], [-20.75, 64.35], [-20.82, 64.32], [-20.97, 63.97], [-21.5, 63.75], [-21.75, 63.85], [-22.0, 63.75], [-22.53, 63.97], [-22.68, 64.32], [-23.03, 64.47], [-23.25, 65.0], [-23.15, 65.25], [-23.18, 65.32], [-23.53, 65.47], [-23.75, 66.0]]]]}, "2024-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-23.75, 66.0], [-23.53, 66.53], [-23.0, 66.75], [-22.75, 66.65], [-22.5, 66.75], [-22.25, 66.65], [-22.0, 66.75], [-21.47, 66.53], [-21.32, 66.18], [-21.25, 66.15], [-21.0, 66.25], [-20.7, 66.13], [-20.53, 66.53], [-20.0, 66.75], [-19.75, 66.65], [-19.5, 66.75], [-19.25, 66.65], [-19.0, 66.75], [-18.75, 66.65], [-18.5, 66.75], [-18.25, 66.65], [-18.0, 66.75], [-17.75, 66.65], [-17.5, 66.75], [-17.25, 66.65], [-17.0, 66.75], [-16.75, 66.65], [-16.68, 66.68], [-16.53, 67.03], [-16.0, 67.25], [-15.47, 67.03], [-15.32, 66.68], [-15.25, 66.65], [-15.0, 66.75], [-14.47, 66.53], [-14.32, 66.18], [-14.25, 66.15], [-14.0, 66.25], [-13.47, 66.03], [-13.25, 65.5], [-13.47, 64.97], [-14.0, 64.75], [-14.25, 64.85], [-14.32, 64.82], [-14.47, 64.47], [-15.0, 64.25], [-15.25, 64.35], [-15.5, 64.25], [-15.75, 64.35], [-16.0, 64.25], [-16.25, 64.35], [-16.5, 64.25], [-16.75, 64.35], [-17.0, 64.25], [-17.25, 64.35], [-17.5, 64.25], [-18.03, 64.47], [-18.18, 64.82], [-18.25, 64.85], [-18.32, 64.82], [-18.47, 64.47], [-19.0, 64.25], [-19.25, 64.35], [-19.5, 64.25], [-19.75, 64.35], [-20.0, 64.25], [-20.25, 64.35], [-20.5, 64.25], [-20.75, 64.35], [-20.82, 64.32], [-20.97, 63.97], [-21.5, 63.75], [-21.75, 63.85], [-22.0, 63.75], [-22.53, 63.97], [-22.68, 64.32], [-23.03, 64.47], [-23.25, 65.0], [-23.15, 65.25], [-23.18, 65.32], [-23.53, 65.47], [-23.75, 66.0]]]]}, "2024-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-22.53, 65.53], [-22.18, 65.68], [-22.03, 66.03], [-21.5, 66.25], [-21.25, 66.15], [-21.0, 66.25], [-20.7, 66.13], [-20.53, 66.53], [-20.0, 66.75], [-19.75, 66.65], [-19.5, 66.75], [-19.25, 66.65], [-19.0, 66.75], [-18.75, 66.65], [-18.5, 66.75], [-18.25, 66.65], [-18.0, 66.75], [-17.75, 66.65], [-17.5, 66.75], [-17.25, 66.65], [-17.0, 66.75], [-16.75, 66.65], [-16.68, 66.68], [-16.53, 67.03], [-16.0, 67.25], [-15.47, 67.03], [-15.32, 66.68], [-15.25, 66.65], [-15.0, 66.75], [-14.47, 66.53], [-14.32, 66.18], [-14.25, 66.15], [-14.0, 66.25], [-13.47, 66.03], [-13.25, 65.5], [-13.47, 64.97], [-14.0, 64.75], [-14.25, 64.85], [-14.32, 64.82], [-14.47, 64.47], [-15.0, 64.25], [-15.25, 64.35], [-15.5, 64.25], [-15.75, 64.35], [-16.0, 64.25], [-16.25, 64.35], [-16.5, 64.25], [-16.75, 64.35], [-17.0, 64.25], [-17.25, 64.35], [-17.5, 64.25], [-18.03, 64.47], [-18.18, 64.82], [-18.25, 64.85], [-18.32, 64.82], [-18.47, 64.47], [-19.0, 64.25], [-19.25, 64.35], [-19.5, 64.25], [-19.75, 64.35], [-20.0, 64.25], [-20.25, 64.35], [-20.5, 64.25], [-20.75, 64.35], [-20.82, 64.32], [-20.97, 63.97], [-21.5, 63.75], [-21.75, 63.85], [-22.0, 63.75], [-22.53, 63.97], [-22.75, 64.5], [-22.65, 64.75], [-22.75, 65.0], [-22.53, 65.53]]]]}, "2024-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-18.75, 66.0], [-18.53, 66.53], [-18.0, 66.75], [-17.75, 66.65], [-17.5, 66.75], [-17.25, 66.65], [-17.0, 66.75], [-16.75, 66.65], [-16.68, 66.68], [-16.53, 67.03], [-16.0, 67.25], [-15.47, 67.03], [-15.32, 66.68], [-15.25, 66.65], [-15.0, 66.75], [-14.47, 66.53], [-14.32, 66.18], [-14.25, 66.15], [-14.0, 66.25], [-13.47, 66.03], [-13.25, 65.5], [-13.47, 64.97], [-14.0, 64.75], [-14.25, 64.85], [-14.32, 64.82], [-14.47, 64.47], [-15.0, 64.25], [-15.25, 64.35], [-15.5, 64.25], [-15.75, 64.35], [-16.0, 64.25], [-16.25, 64.35], [-16.5, 64.25], [-17.03, 64.47], [-17.18, 64.82], [-17.25, 64.85], [-17.5, 64.75], [-18.03, 64.97], [-18.18, 65.32], [-18.53, 65.47], [-18.75, 66.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.514277873793901}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.9932891454134114}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.5509687836907915, 5.139545249409707, 5.215913544748048, 4.509909900746777, 5.17017647508618]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.684307226889985, 2.747278219265752, 2.375721054535461, 2.5717142668588053, 3.9364047896364696]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.8342755610019656, -3.9122390594407808, -3.843475017481809, -4.532336857197985, -3.9288141684238296]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.5534352052197846, -5.33960364755859, -5.519333704256212, -6.514277873793901, -4.893158161172948]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4974008767333462, -1.6113738014396985, -1.59811069443621, -1.8397641986191164, -1.4350026738249029]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5950714995083166, -2.1446991380686797, -1.9927378073962507, -2.2984253793278016, -1.5953489088734993]}}