{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:34.789365", "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-Jun-07_to_2014-Jun-10_257.0_37.0"}, "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": 2014060000333}, "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 07 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 10 2014"}, "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": 103791.12070770294}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.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": []}, "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": 37.0}, "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": 257.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "257.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 254.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 259.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.03, 36.47], [-104.25, 37.0], [-104.03, 37.53], [-103.5, 37.75], [-103.25, 37.65], [-103.0, 37.75], [-102.47, 37.53], [-102.25, 37.0], [-102.47, 36.47], [-103.0, 36.25], [-103.25, 36.35], [-103.5, 36.25], [-104.03, 36.47]]]]}, "2014-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.75, 35.0], [-105.53, 35.53], [-105.0, 35.75], [-104.75, 35.65], [-104.5, 35.75], [-104.25, 35.65], [-104.0, 35.75], [-103.75, 35.65], [-103.68, 35.68], [-103.65, 35.75], [-103.68, 35.82], [-104.03, 35.97], [-104.25, 36.5], [-104.15, 36.75], [-104.25, 37.0], [-104.03, 37.53], [-103.68, 37.68], [-103.53, 38.03], [-103.0, 38.25], [-102.75, 38.15], [-102.5, 38.25], [-101.97, 38.03], [-101.82, 37.68], [-101.47, 37.53], [-101.25, 37.0], [-101.46, 36.5], [-101.25, 36.0], [-101.37, 35.7], [-100.97, 35.53], [-100.82, 35.18], [-100.75, 35.15], [-100.5, 35.25], [-99.97, 35.03], [-99.75, 34.5], [-99.97, 33.97], [-100.32, 33.82], [-100.47, 33.47], [-101.0, 33.25], [-101.25, 33.35], [-101.32, 33.32], [-101.47, 32.97], [-101.82, 32.82], [-101.97, 32.47], [-102.5, 32.25], [-103.03, 32.47], [-103.18, 32.82], [-103.25, 32.85], [-103.5, 32.75], [-103.75, 32.85], [-104.0, 32.75], [-104.53, 32.97], [-104.75, 33.5], [-104.65, 33.75], [-104.68, 33.82], [-105.03, 33.97], [-105.18, 34.32], [-105.53, 34.47], [-105.75, 35.0]]]]}, "2014-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.75, 35.0], [-105.53, 35.53], [-105.0, 35.75], [-104.75, 35.65], [-104.5, 35.75], [-104.25, 35.65], [-104.0, 35.75], [-103.75, 35.65], [-103.68, 35.68], [-103.65, 35.75], [-103.68, 35.82], [-104.03, 35.97], [-104.25, 36.5], [-104.15, 36.75], [-104.25, 37.0], [-104.03, 37.53], [-103.68, 37.68], [-103.53, 38.03], [-103.0, 38.25], [-102.75, 38.15], [-102.5, 38.25], [-101.97, 38.03], [-101.82, 37.68], [-101.47, 37.53], [-101.25, 37.0], [-101.46, 36.5], [-101.25, 36.0], [-101.37, 35.7], [-100.97, 35.53], [-100.82, 35.18], [-100.75, 35.15], [-100.5, 35.25], [-99.97, 35.03], [-99.75, 34.5], [-99.97, 33.97], [-100.32, 33.82], [-100.47, 33.47], [-101.0, 33.25], [-101.25, 33.35], [-101.32, 33.32], [-101.47, 32.97], [-101.82, 32.82], [-101.97, 32.47], [-102.5, 32.25], [-103.03, 32.47], [-103.18, 32.82], [-103.25, 32.85], [-103.5, 32.75], [-103.75, 32.85], [-104.0, 32.75], [-104.53, 32.97], [-104.75, 33.5], [-104.65, 33.75], [-104.68, 33.82], [-105.03, 33.97], [-105.18, 34.32], [-105.53, 34.47], [-105.75, 35.0]]]]}, "2014-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.75, 35.0], [-105.53, 35.53], [-105.0, 35.75], [-104.75, 35.65], [-104.5, 35.75], [-104.25, 35.65], [-104.0, 35.75], [-103.75, 35.65], [-103.68, 35.68], [-103.65, 35.75], [-103.68, 35.82], [-104.03, 35.97], [-104.25, 36.5], [-104.15, 36.75], [-104.25, 37.0], [-104.03, 37.53], [-103.68, 37.68], [-103.53, 38.03], [-103.0, 38.25], [-102.75, 38.15], [-102.5, 38.25], [-101.97, 38.03], [-101.82, 37.68], [-101.47, 37.53], [-101.25, 37.0], [-101.46, 36.5], [-101.25, 36.0], [-101.37, 35.7], [-100.97, 35.53], [-100.82, 35.18], [-100.75, 35.15], [-100.5, 35.25], [-99.97, 35.03], [-99.75, 34.5], [-99.97, 33.97], [-100.32, 33.82], [-100.47, 33.47], [-101.0, 33.25], [-101.25, 33.35], [-101.32, 33.32], [-101.47, 32.97], [-101.82, 32.82], [-101.97, 32.47], [-102.5, 32.25], [-103.03, 32.47], [-103.18, 32.82], [-103.25, 32.85], [-103.5, 32.75], [-103.75, 32.85], [-104.0, 32.75], [-104.53, 32.97], [-104.75, 33.5], [-104.65, 33.75], [-104.68, 33.82], [-105.03, 33.97], [-105.18, 34.32], [-105.53, 34.47], [-105.75, 35.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.009105585543864}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.890253382250055}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.118469098447463, 18.169165648536534, 17.006791646719307, 17.66254118637852]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.468857792854408, 14.877546060879126, 12.615026319976494, 15.145607010696892]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.461252266686756, -5.135732010670499, -6.511277614049184, -6.044677405716497]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.5294548768400205, -5.8649584025735635, -9.009105585543864, -6.598918971755097]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4705558663826535, -1.5001188091333457, -1.9489926093115055, -1.8566515001447295]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.474612220566379, -1.789453074736729, -2.22286796807738, -2.148069395342654]}}