{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:49.428612", "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": "2014-Jul-14_to_2014-Jul-20_309.0_62.5"}, "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": 2014070000690}, "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 14 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 20 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 207816.39984843065}, "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", "N.Atlantic-Ocean", "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": ["Davis Strait", "Labrador 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": 62.5}, "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": 307.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.75, 62.5], [-52.53, 63.03], [-52.0, 63.25], [-51.75, 63.15], [-51.5, 63.25], [-51.25, 63.15], [-51.0, 63.25], [-50.75, 63.15], [-50.5, 63.25], [-49.97, 63.03], [-49.82, 62.68], [-49.47, 62.53], [-49.32, 62.18], [-48.97, 62.03], [-48.75, 61.5], [-48.97, 60.97], [-49.5, 60.75], [-49.93, 60.93], [-49.82, 60.68], [-49.47, 60.53], [-49.32, 60.18], [-49.25, 60.15], [-49.0, 60.25], [-48.75, 60.15], [-48.68, 60.18], [-48.53, 60.53], [-48.0, 60.75], [-47.75, 60.65], [-47.5, 60.75], [-47.25, 60.65], [-47.0, 60.75], [-46.75, 60.65], [-46.68, 60.68], [-46.53, 61.03], [-46.0, 61.25], [-45.47, 61.03], [-45.25, 60.5], [-45.37, 60.2], [-44.97, 60.03], [-44.75, 59.5], [-44.53, 60.03], [-44.0, 60.25], [-43.75, 60.15], [-43.5, 60.25], [-43.25, 60.15], [-43.0, 60.25], [-42.47, 60.03], [-42.25, 59.5], [-42.37, 59.2], [-41.97, 59.03], [-41.75, 58.5], [-41.97, 57.97], [-42.32, 57.82], [-42.47, 57.47], [-43.0, 57.25], [-43.25, 57.35], [-43.5, 57.25], [-43.75, 57.35], [-44.0, 57.25], [-44.25, 57.35], [-44.5, 57.25], [-45.03, 57.47], [-45.18, 57.82], [-45.25, 57.85], [-45.5, 57.75], [-46.03, 57.97], [-46.2, 58.38], [-46.5, 58.25], [-46.75, 58.35], [-46.82, 58.32], [-46.97, 57.97], [-47.5, 57.75], [-47.75, 57.85], [-48.0, 57.75], [-48.25, 57.85], [-48.5, 57.75], [-48.75, 57.85], [-49.0, 57.75], [-49.25, 57.85], [-49.5, 57.75], [-49.75, 57.85], [-50.0, 57.75], [-50.25, 57.85], [-50.5, 57.75], [-50.75, 57.85], [-51.0, 57.75], [-51.53, 57.97], [-51.68, 58.32], [-52.03, 58.47], [-52.25, 59.0], [-52.15, 59.25], [-52.25, 59.5], [-52.03, 60.03], [-51.68, 60.18], [-51.65, 60.25], [-51.68, 60.32], [-52.03, 60.47], [-52.25, 61.0], [-52.15, 61.25], [-52.25, 61.5], [-52.15, 61.75], [-52.18, 61.82], [-52.53, 61.97], [-52.75, 62.5]], [[-44.87, 59.2], [-44.75, 59.15], [-44.62, 59.2], [-44.75, 59.5], [-44.87, 59.2]]]]}, "2014-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.75, 62.5], [-52.53, 63.03], [-52.18, 63.18], [-52.03, 63.53], [-51.5, 63.75], [-50.97, 63.53], [-50.82, 63.18], [-50.75, 63.15], [-50.5, 63.25], [-49.97, 63.03], [-49.82, 62.68], [-49.47, 62.53], [-49.32, 62.18], [-48.97, 62.03], [-48.8, 61.62], [-48.5, 61.75], [-47.97, 61.53], [-47.8, 61.12], [-47.5, 61.25], [-47.25, 61.15], [-47.0, 61.25], [-46.75, 61.15], [-46.5, 61.25], [-46.25, 61.15], [-46.0, 61.25], [-45.75, 61.15], [-45.5, 61.25], [-44.97, 61.03], [-44.82, 60.68], [-44.47, 60.53], [-44.32, 60.18], [-44.25, 60.15], [-44.0, 60.25], [-43.75, 60.15], [-43.5, 60.25], [-43.25, 60.15], [-43.0, 60.25], [-42.75, 60.15], [-42.5, 60.25], [-41.97, 60.03], [-41.82, 59.68], [-41.75, 59.65], [-41.5, 59.75], [-41.25, 59.65], [-41.0, 59.75], [-40.75, 59.65], [-40.5, 59.75], [-39.97, 59.53], [-39.82, 59.18], [-39.47, 59.03], [-39.25, 58.5], [-39.35, 58.25], [-39.25, 58.0], [-39.47, 57.47], [-39.82, 57.32], [-39.97, 56.97], [-40.5, 56.75], [-40.75, 56.85], [-40.82, 56.82], [-40.97, 56.47], [-41.5, 56.25], [-41.75, 56.35], [-42.0, 56.25], [-42.25, 56.35], [-42.5, 56.25], [-42.75, 56.35], [-43.0, 56.25], [-43.25, 56.35], [-43.5, 56.25], [-44.03, 56.47], [-44.18, 56.82], [-44.25, 56.85], [-44.5, 56.75], [-44.75, 56.85], [-45.0, 56.75], [-45.53, 56.97], [-45.68, 57.32], [-46.03, 57.47], [-46.18, 57.82], [-46.53, 57.97], [-46.68, 58.32], [-46.75, 58.35], [-46.82, 58.32], [-46.97, 57.97], [-47.5, 57.75], [-47.75, 57.85], [-48.0, 57.75], [-48.25, 57.85], [-48.5, 57.75], [-48.75, 57.85], [-49.0, 57.75], [-49.25, 57.85], [-49.5, 57.75], [-49.75, 57.85], [-50.0, 57.75], [-50.25, 57.85], [-50.5, 57.75], [-50.75, 57.85], [-51.0, 57.75], [-51.53, 57.97], [-51.68, 58.32], [-52.03, 58.47], [-52.25, 59.0], [-52.15, 59.25], [-52.25, 59.5], [-52.03, 60.03], [-51.68, 60.18], [-51.65, 60.25], [-51.68, 60.32], [-52.03, 60.47], [-52.25, 61.0], [-52.15, 61.25], [-52.25, 61.5], [-52.15, 61.75], [-52.18, 61.82], [-52.53, 61.97], [-52.75, 62.5]], [[-49.47, 60.53], [-49.32, 60.18], [-49.25, 60.15], [-49.0, 60.25], [-48.75, 60.15], [-48.68, 60.18], [-48.62, 60.3], [-49.03, 60.47], [-49.2, 60.88], [-49.5, 60.75], [-49.93, 60.93], [-49.82, 60.68], [-49.47, 60.53]]]]}, "2014-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.53, 63.53], [-52.0, 63.75], [-51.75, 63.65], [-51.5, 63.75], [-50.97, 63.53], [-50.82, 63.18], [-50.75, 63.15], [-50.5, 63.25], [-49.97, 63.03], [-49.82, 62.68], [-49.47, 62.53], [-49.32, 62.18], [-48.97, 62.03], [-48.82, 61.68], [-48.75, 61.65], [-48.5, 61.75], [-47.97, 61.53], [-47.82, 61.18], [-47.75, 61.15], [-47.5, 61.25], [-47.25, 61.15], [-47.0, 61.25], [-46.75, 61.15], [-46.5, 61.25], [-46.25, 61.15], [-46.0, 61.25], [-45.75, 61.15], [-45.5, 61.25], [-44.97, 61.03], [-44.82, 60.68], [-44.75, 60.65], [-44.5, 60.75], [-43.97, 60.53], [-43.82, 60.18], [-43.75, 60.15], [-43.5, 60.25], [-43.25, 60.15], [-43.0, 60.25], [-42.75, 60.15], [-42.5, 60.25], [-41.97, 60.03], [-41.82, 59.68], [-41.75, 59.65], [-41.5, 59.75], [-41.25, 59.65], [-41.0, 59.75], [-40.75, 59.65], [-40.5, 59.75], [-39.97, 59.53], [-39.82, 59.18], [-39.47, 59.03], [-39.25, 58.5], [-39.35, 58.25], [-39.25, 58.0], [-39.47, 57.47], [-39.82, 57.32], [-39.97, 56.97], [-40.5, 56.75], [-40.75, 56.85], [-40.82, 56.82], [-40.97, 56.47], [-41.5, 56.25], [-41.75, 56.35], [-42.0, 56.25], [-42.25, 56.35], [-42.5, 56.25], [-42.75, 56.35], [-43.0, 56.25], [-43.25, 56.35], [-43.5, 56.25], [-44.03, 56.47], [-44.18, 56.82], [-44.25, 56.85], [-44.5, 56.75], [-44.75, 56.85], [-45.0, 56.75], [-45.53, 56.97], [-45.68, 57.32], [-46.03, 57.47], [-46.18, 57.82], [-46.53, 57.97], [-46.68, 58.32], [-46.75, 58.35], [-46.82, 58.32], [-46.97, 57.97], [-47.5, 57.75], [-47.75, 57.85], [-48.0, 57.75], [-48.25, 57.85], [-48.5, 57.75], [-48.75, 57.85], [-49.0, 57.75], [-49.25, 57.85], [-49.5, 57.75], [-49.75, 57.85], [-50.0, 57.75], [-50.25, 57.85], [-50.5, 57.75], [-50.75, 57.85], [-51.0, 57.75], [-51.53, 57.97], [-51.68, 58.32], [-52.03, 58.47], [-52.25, 59.0], [-52.15, 59.25], [-52.25, 59.5], [-52.03, 60.03], [-51.68, 60.18], [-51.65, 60.25], [-51.68, 60.32], [-52.03, 60.47], [-52.25, 61.0], [-52.15, 61.25], [-52.25, 61.5], [-52.15, 61.75], [-52.18, 61.82], [-52.53, 61.97], [-52.75, 62.5], [-52.65, 62.75], [-52.75, 63.0], [-52.53, 63.53]]]]}, "2014-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.53, 63.53], [-52.0, 63.75], [-51.75, 63.65], [-51.5, 63.75], [-50.97, 63.53], [-50.82, 63.18], [-50.75, 63.15], [-50.5, 63.25], [-49.97, 63.03], [-49.82, 62.68], [-49.47, 62.53], [-49.32, 62.18], [-48.97, 62.03], [-48.82, 61.68], [-48.75, 61.65], [-48.5, 61.75], [-47.97, 61.53], [-47.82, 61.18], [-47.75, 61.15], [-47.5, 61.25], [-47.25, 61.15], [-47.0, 61.25], [-46.75, 61.15], [-46.5, 61.25], [-46.25, 61.15], [-46.0, 61.25], [-45.75, 61.15], [-45.5, 61.25], [-44.97, 61.03], [-44.82, 60.68], [-44.75, 60.65], [-44.5, 60.75], [-43.97, 60.53], [-43.82, 60.18], [-43.75, 60.15], [-43.5, 60.25], [-43.25, 60.15], [-43.0, 60.25], [-42.75, 60.15], [-42.5, 60.25], [-41.97, 60.03], [-41.82, 59.68], [-41.75, 59.65], [-41.5, 59.75], [-41.25, 59.65], [-41.0, 59.75], [-40.75, 59.65], [-40.5, 59.75], [-39.97, 59.53], [-39.82, 59.18], [-39.47, 59.03], [-39.25, 58.5], [-39.35, 58.25], [-39.25, 58.0], [-39.47, 57.47], [-39.82, 57.32], [-39.97, 56.97], [-40.5, 56.75], [-40.75, 56.85], [-40.82, 56.82], [-40.97, 56.47], [-41.5, 56.25], [-41.75, 56.35], [-42.0, 56.25], [-42.25, 56.35], [-42.5, 56.25], [-42.75, 56.35], [-43.0, 56.25], [-43.25, 56.35], [-43.5, 56.25], [-44.03, 56.47], [-44.18, 56.82], [-44.25, 56.85], [-44.5, 56.75], [-44.75, 56.85], [-45.0, 56.75], [-45.53, 56.97], [-45.68, 57.32], [-46.03, 57.47], [-46.18, 57.82], [-46.53, 57.97], [-46.68, 58.32], [-46.75, 58.35], [-46.82, 58.32], [-46.97, 57.97], [-47.5, 57.75], [-47.75, 57.85], [-48.0, 57.75], [-48.25, 57.85], [-48.5, 57.75], [-48.75, 57.85], [-49.0, 57.75], [-49.25, 57.85], [-49.5, 57.75], [-49.75, 57.85], [-50.0, 57.75], [-50.53, 57.97], [-50.68, 58.32], [-51.03, 58.47], [-51.25, 59.0], [-51.03, 59.53], [-50.62, 59.7], [-50.75, 60.0], [-50.65, 60.25], [-50.68, 60.32], [-51.03, 60.47], [-51.18, 60.82], [-51.25, 60.85], [-51.5, 60.75], [-52.03, 60.97], [-52.25, 61.5], [-52.15, 61.75], [-52.18, 61.82], [-52.53, 61.97], [-52.75, 62.5], [-52.65, 62.75], [-52.75, 63.0], [-52.53, 63.53]]]]}, "2014-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.53, 63.53], [-52.0, 63.75], [-51.75, 63.65], [-51.5, 63.75], [-50.97, 63.53], [-50.82, 63.18], [-50.75, 63.15], [-50.5, 63.25], [-49.97, 63.03], [-49.82, 62.68], [-49.47, 62.53], [-49.32, 62.18], [-48.97, 62.03], [-48.82, 61.68], [-48.47, 61.53], [-48.32, 61.18], [-48.25, 61.15], [-48.0, 61.25], [-47.75, 61.15], [-47.5, 61.25], [-47.25, 61.15], [-47.0, 61.25], [-46.75, 61.15], [-46.5, 61.25], [-46.25, 61.15], [-46.0, 61.25], [-45.75, 61.15], [-45.5, 61.25], [-44.97, 61.03], [-44.82, 60.68], [-44.75, 60.65], [-44.5, 60.75], [-43.97, 60.53], [-43.82, 60.18], [-43.75, 60.15], [-43.5, 60.25], [-43.25, 60.15], [-43.0, 60.25], [-42.75, 60.15], [-42.5, 60.25], [-41.97, 60.03], [-41.82, 59.68], [-41.75, 59.65], [-41.5, 59.75], [-41.25, 59.65], [-41.0, 59.75], [-40.75, 59.65], [-40.5, 59.75], [-39.97, 59.53], [-39.82, 59.18], [-39.47, 59.03], [-39.25, 58.5], [-39.35, 58.25], [-39.25, 58.0], [-39.47, 57.47], [-39.82, 57.32], [-39.97, 56.97], [-40.5, 56.75], [-40.75, 56.85], [-41.0, 56.75], [-41.25, 56.85], [-41.5, 56.75], [-41.75, 56.85], [-42.0, 56.75], [-42.25, 56.85], [-42.5, 56.75], [-42.75, 56.85], [-43.0, 56.75], [-43.53, 56.97], [-43.68, 57.32], [-43.75, 57.35], [-44.0, 57.25], [-44.25, 57.35], [-44.5, 57.25], [-44.75, 57.35], [-45.0, 57.25], [-45.25, 57.35], [-45.5, 57.25], [-46.03, 57.47], [-46.25, 58.0], [-46.15, 58.25], [-46.25, 58.5], [-46.12, 58.8], [-46.25, 58.85], [-46.5, 58.75], [-46.75, 58.85], [-47.0, 58.75], [-47.25, 58.85], [-47.32, 58.82], [-47.47, 58.47], [-48.0, 58.25], [-48.53, 58.47], [-48.68, 58.82], [-48.75, 58.85], [-49.0, 58.75], [-49.53, 58.97], [-49.68, 59.32], [-49.75, 59.35], [-50.0, 59.25], [-50.53, 59.47], [-50.75, 60.0], [-50.65, 60.25], [-50.68, 60.32], [-51.03, 60.47], [-51.18, 60.82], [-51.25, 60.85], [-51.5, 60.75], [-52.03, 60.97], [-52.25, 61.5], [-52.15, 61.75], [-52.18, 61.82], [-52.53, 61.97], [-52.75, 62.5], [-52.65, 62.75], [-52.75, 63.0], [-52.53, 63.53]]]]}, "2014-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.53, 63.53], [-52.0, 63.75], [-51.75, 63.65], [-51.5, 63.75], [-50.97, 63.53], [-50.82, 63.18], [-50.75, 63.15], [-50.5, 63.25], [-49.97, 63.03], [-49.82, 62.68], [-49.47, 62.53], [-49.32, 62.18], [-48.97, 62.03], [-48.75, 61.5], [-48.97, 60.97], [-49.5, 60.75], [-49.75, 60.85], [-50.0, 60.75], [-50.53, 60.97], [-50.68, 61.32], [-50.75, 61.35], [-51.0, 61.25], [-51.25, 61.35], [-51.5, 61.25], [-52.03, 61.47], [-52.18, 61.82], [-52.53, 61.97], [-52.75, 62.5], [-52.65, 62.75], [-52.75, 63.0], [-52.53, 63.53]]]]}, "2014-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.75, 63.0], [-52.53, 63.53], [-52.0, 63.75], [-51.75, 63.65], [-51.5, 63.75], [-50.97, 63.53], [-50.82, 63.18], [-50.47, 63.03], [-50.32, 62.68], [-49.97, 62.53], [-49.82, 62.18], [-49.75, 62.15], [-49.5, 62.25], [-48.97, 62.03], [-48.75, 61.5], [-48.97, 60.97], [-49.5, 60.75], [-49.75, 60.85], [-50.0, 60.75], [-50.53, 60.97], [-50.68, 61.32], [-50.75, 61.35], [-51.0, 61.25], [-51.25, 61.35], [-51.5, 61.25], [-52.03, 61.47], [-52.25, 62.0], [-52.15, 62.25], [-52.18, 62.32], [-52.53, 62.47], [-52.75, 63.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2915929622623707}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.059895378269112}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.328983247350948, 4.585196979556599, 4.517977184919971, 4.137157041946523, 4.243160814421913, 2.576829779999059, 2.7571395778812757]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.4824364347722963, 2.318525167060784, 1.9609687278915544, 1.7056902545503476, 1.600413911873943, 1.7855636822613405, 2.0804040723519392]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7679599871975133, -1.9578500719714094, -1.9429364925801993, -2.375455940633671, -2.1455439847195943, -2.3314802269573724, -2.067632701689907]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2379173838028237, -2.956976017164095, -2.7370741272288797, -3.2915929622623707, -2.90529322312824, -2.9642470769467195, -2.471784379217979]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6665086635021822, -1.7874167358981459, -1.7401727372461513, -2.1081021945245357, -1.8787901555714956, -1.9062724254402958, -1.7236751742013157]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.324674671155351, -2.3275324902406633, -2.6879059267150143, -3.054150298030288, -2.497050754511138, -2.438344558451165, -2.061885319225372]}}