{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:27.319045", "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-Oct-02_to_2014-Oct-07_308.5_72.0"}, "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": 2014100000158}, "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": "October 02 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 07 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 58420.27423269718}, "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": ["Baffin Bay"]}, "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": 72.0}, "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": 308.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "308.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 306.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 315.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 70.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 73.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.53, 72.97], [-53.75, 73.5], [-53.53, 74.03], [-53.0, 74.25], [-52.75, 74.15], [-52.5, 74.25], [-52.0, 74.04], [-51.5, 74.25], [-50.97, 74.03], [-50.75, 73.5], [-50.97, 72.97], [-51.5, 72.75], [-52.0, 72.96], [-52.5, 72.75], [-52.75, 72.85], [-53.0, 72.75], [-53.53, 72.97]]]]}, "2014-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.25, 73.5], [-54.03, 74.03], [-53.5, 74.25], [-53.25, 74.15], [-53.0, 74.25], [-52.75, 74.15], [-52.5, 74.25], [-52.25, 74.15], [-52.0, 74.25], [-51.75, 74.15], [-51.5, 74.25], [-51.25, 74.15], [-51.0, 74.25], [-50.75, 74.15], [-50.5, 74.25], [-50.25, 74.15], [-50.0, 74.25], [-49.75, 74.15], [-49.5, 74.25], [-48.97, 74.03], [-48.82, 73.68], [-48.75, 73.65], [-48.5, 73.75], [-48.25, 73.65], [-48.0, 73.75], [-47.75, 73.65], [-47.5, 73.75], [-46.97, 73.53], [-46.75, 73.0], [-46.96, 72.5], [-46.82, 72.18], [-46.75, 72.15], [-46.5, 72.25], [-45.97, 72.03], [-45.82, 71.68], [-45.75, 71.65], [-45.5, 71.75], [-45.25, 71.65], [-45.0, 71.75], [-44.75, 71.65], [-44.5, 71.75], [-43.97, 71.53], [-43.75, 71.0], [-43.97, 70.47], [-44.5, 70.25], [-44.75, 70.35], [-45.0, 70.25], [-45.25, 70.35], [-45.5, 70.25], [-45.75, 70.35], [-46.0, 70.25], [-46.25, 70.35], [-46.5, 70.25], [-46.75, 70.35], [-47.0, 70.25], [-47.25, 70.35], [-47.5, 70.25], [-47.75, 70.35], [-48.0, 70.25], [-48.53, 70.47], [-48.68, 70.82], [-48.75, 70.85], [-49.0, 70.75], [-49.25, 70.85], [-49.5, 70.75], [-49.75, 70.85], [-50.0, 70.75], [-50.25, 70.85], [-50.5, 70.75], [-50.75, 70.85], [-51.0, 70.75], [-51.53, 70.97], [-51.68, 71.32], [-51.75, 71.35], [-52.0, 71.25], [-52.53, 71.47], [-52.68, 71.82], [-53.03, 71.97], [-53.18, 72.32], [-53.53, 72.47], [-53.68, 72.82], [-54.03, 72.97], [-54.25, 73.5]]]]}, "2014-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.25, 73.5], [-54.03, 74.03], [-53.5, 74.25], [-53.25, 74.15], [-53.0, 74.25], [-52.75, 74.15], [-52.5, 74.25], [-52.25, 74.15], [-52.0, 74.25], [-51.75, 74.15], [-51.5, 74.25], [-51.25, 74.15], [-51.0, 74.25], [-50.75, 74.15], [-50.5, 74.25], [-50.25, 74.15], [-50.0, 74.25], [-49.75, 74.15], [-49.5, 74.25], [-48.97, 74.03], [-48.82, 73.68], [-48.75, 73.65], [-48.5, 73.75], [-48.25, 73.65], [-48.0, 73.75], [-47.75, 73.65], [-47.5, 73.75], [-46.97, 73.53], [-46.75, 73.0], [-46.96, 72.5], [-46.82, 72.18], [-46.75, 72.15], [-46.5, 72.25], [-45.97, 72.03], [-45.82, 71.68], [-45.75, 71.65], [-45.5, 71.75], [-45.25, 71.65], [-45.0, 71.75], [-44.75, 71.65], [-44.5, 71.75], [-43.97, 71.53], [-43.75, 71.0], [-43.97, 70.47], [-44.5, 70.25], [-44.75, 70.35], [-45.0, 70.25], [-45.25, 70.35], [-45.5, 70.25], [-45.75, 70.35], [-46.0, 70.25], [-46.25, 70.35], [-46.5, 70.25], [-46.75, 70.35], [-47.0, 70.25], [-47.25, 70.35], [-47.5, 70.25], [-47.75, 70.35], [-48.0, 70.25], [-48.53, 70.47], [-48.68, 70.82], [-48.75, 70.85], [-49.0, 70.75], [-49.25, 70.85], [-49.5, 70.75], [-49.75, 70.85], [-50.0, 70.75], [-50.25, 70.85], [-50.5, 70.75], [-50.75, 70.85], [-51.0, 70.75], [-51.25, 70.85], [-51.5, 70.75], [-51.75, 70.85], [-52.0, 70.75], [-52.25, 70.85], [-52.5, 70.75], [-53.03, 70.97], [-53.25, 71.5], [-53.15, 71.75], [-53.25, 72.0], [-53.15, 72.25], [-53.18, 72.32], [-53.53, 72.47], [-53.68, 72.82], [-54.03, 72.97], [-54.25, 73.5]]]]}, "2014-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.25, 73.5], [-54.03, 74.03], [-53.5, 74.25], [-53.25, 74.15], [-53.0, 74.25], [-52.75, 74.15], [-52.5, 74.25], [-52.25, 74.15], [-52.0, 74.25], [-51.75, 74.15], [-51.5, 74.25], [-51.25, 74.15], [-51.0, 74.25], [-50.75, 74.15], [-50.5, 74.25], [-50.25, 74.15], [-50.0, 74.25], [-49.75, 74.15], [-49.5, 74.25], [-48.97, 74.03], [-48.82, 73.68], [-48.75, 73.65], [-48.5, 73.75], [-48.25, 73.65], [-48.0, 73.75], [-47.75, 73.65], [-47.5, 73.75], [-46.97, 73.53], [-46.75, 73.0], [-46.96, 72.5], [-46.82, 72.18], [-46.75, 72.15], [-46.5, 72.25], [-45.97, 72.03], [-45.82, 71.68], [-45.75, 71.65], [-45.5, 71.75], [-45.25, 71.65], [-45.0, 71.75], [-44.75, 71.65], [-44.5, 71.75], [-43.97, 71.53], [-43.75, 71.0], [-43.97, 70.47], [-44.5, 70.25], [-44.75, 70.35], [-45.0, 70.25], [-45.25, 70.35], [-45.5, 70.25], [-45.75, 70.35], [-46.0, 70.25], [-46.25, 70.35], [-46.5, 70.25], [-46.75, 70.35], [-47.0, 70.25], [-47.25, 70.35], [-47.5, 70.25], [-47.75, 70.35], [-48.0, 70.25], [-48.53, 70.47], [-48.68, 70.82], [-48.75, 70.85], [-49.0, 70.75], [-49.25, 70.85], [-49.5, 70.75], [-49.75, 70.85], [-50.0, 70.75], [-50.25, 70.85], [-50.5, 70.75], [-50.75, 70.85], [-51.0, 70.75], [-51.25, 70.85], [-51.5, 70.75], [-51.75, 70.85], [-52.0, 70.75], [-52.25, 70.85], [-52.5, 70.75], [-53.03, 70.97], [-53.25, 71.5], [-53.15, 71.75], [-53.25, 72.0], [-53.15, 72.25], [-53.18, 72.32], [-53.53, 72.47], [-53.68, 72.82], [-54.03, 72.97], [-54.25, 73.5]]]]}, "2014-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.25, 73.5], [-54.03, 74.03], [-53.5, 74.25], [-53.0, 74.04], [-52.5, 74.25], [-52.25, 74.15], [-52.0, 74.25], [-51.75, 74.15], [-51.5, 74.25], [-51.25, 74.15], [-51.0, 74.25], [-50.47, 74.03], [-50.25, 73.5], [-50.46, 73.0], [-50.32, 72.68], [-49.97, 72.53], [-49.75, 72.0], [-49.97, 71.47], [-50.32, 71.32], [-50.47, 70.97], [-51.0, 70.75], [-51.25, 70.85], [-51.5, 70.75], [-51.75, 70.85], [-52.0, 70.75], [-52.25, 70.85], [-52.5, 70.75], [-53.03, 70.97], [-53.25, 71.5], [-53.15, 71.75], [-53.25, 72.0], [-53.15, 72.25], [-53.18, 72.32], [-53.53, 72.47], [-53.68, 72.82], [-54.03, 72.97], [-54.25, 73.5]]]]}, "2014-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.03, 73.03], [-52.5, 73.25], [-52.25, 73.15], [-52.0, 73.25], [-51.47, 73.03], [-51.32, 72.68], [-50.97, 72.53], [-50.75, 72.0], [-50.97, 71.47], [-51.5, 71.25], [-51.75, 71.35], [-52.0, 71.25], [-52.25, 71.35], [-52.5, 71.25], [-53.03, 71.47], [-53.25, 72.0], [-53.15, 72.25], [-53.25, 72.5], [-53.03, 73.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.539294921058058}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.741067897372258}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-21.284610731391894, -25.828819933884233, -25.602149944609607, -27.08799380180426, -22.16374213696068, -24.25354695938347]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-23.386254907334575, -32.40233628991791, -30.366052401492084, -32.16422151170855, -26.556525592245976, -25.62488991092286]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.62536364455831, -8.63633126638609, -8.599395278133874, -9.673788003377242, -7.344911674806346, -7.559533911884239]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.100195580346536, -10.549552405682618, -10.2872416405651, -11.539294921058058, -9.07834477136825, -7.983478644682066]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3072231315899823, -1.5508051117964945, -1.5010553569641598, -1.6546614182600856, -1.3675001338396646, -1.392973244037462]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3492394189474193, -1.75406420469972, -1.866180117677377, -1.9273377821048432, -1.7006878624419144, -1.4850241782155027]}}