{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:34.781171", "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-09_256.5_43.0"}, "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": 2014060000334}, "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 09 2014"}, "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": 92859.93674355677}, "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": 43.0}, "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": 256.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "256.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 255.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 260.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.75}, "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": [[[[-104.75, 42.0], [-104.53, 42.53], [-104.18, 42.68], [-104.15, 42.75], [-104.25, 43.0], [-104.15, 43.25], [-104.25, 43.5], [-104.03, 44.03], [-103.5, 44.25], [-103.2, 44.12], [-103.15, 44.25], [-103.25, 44.5], [-103.03, 45.03], [-102.5, 45.25], [-102.25, 45.15], [-102.0, 45.25], [-101.75, 45.15], [-101.5, 45.25], [-100.97, 45.03], [-100.82, 44.68], [-100.75, 44.65], [-100.5, 44.75], [-99.97, 44.53], [-99.82, 44.18], [-99.47, 44.03], [-99.25, 43.5], [-99.35, 43.25], [-99.25, 43.0], [-99.47, 42.47], [-99.82, 42.32], [-99.97, 41.97], [-100.32, 41.82], [-100.47, 41.47], [-100.82, 41.32], [-100.97, 40.97], [-101.5, 40.75], [-101.75, 40.85], [-102.0, 40.75], [-102.25, 40.85], [-102.5, 40.75], [-102.75, 40.85], [-103.0, 40.75], [-103.25, 40.85], [-103.5, 40.75], [-104.03, 40.97], [-104.18, 41.32], [-104.53, 41.47], [-104.75, 42.0]]]]}, "2014-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.75, 42.0], [-104.53, 42.53], [-104.18, 42.68], [-104.15, 42.75], [-104.25, 43.0], [-104.15, 43.25], [-104.25, 43.5], [-104.03, 44.03], [-103.5, 44.25], [-103.2, 44.12], [-103.15, 44.25], [-103.25, 44.5], [-103.03, 45.03], [-102.5, 45.25], [-102.25, 45.15], [-102.0, 45.25], [-101.75, 45.15], [-101.5, 45.25], [-100.97, 45.03], [-100.82, 44.68], [-100.75, 44.65], [-100.5, 44.75], [-99.97, 44.53], [-99.82, 44.18], [-99.47, 44.03], [-99.25, 43.5], [-99.35, 43.25], [-99.25, 43.0], [-99.47, 42.47], [-99.82, 42.32], [-99.97, 41.97], [-100.32, 41.82], [-100.47, 41.47], [-100.82, 41.32], [-100.97, 40.97], [-101.5, 40.75], [-101.75, 40.85], [-102.0, 40.75], [-102.25, 40.85], [-102.5, 40.75], [-102.75, 40.85], [-103.0, 40.75], [-103.25, 40.85], [-103.5, 40.75], [-104.03, 40.97], [-104.18, 41.32], [-104.53, 41.47], [-104.75, 42.0]]]]}, "2014-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.75, 42.0], [-104.53, 42.53], [-104.18, 42.68], [-104.15, 42.75], [-104.25, 43.0], [-104.15, 43.25], [-104.25, 43.5], [-104.03, 44.03], [-103.5, 44.25], [-103.2, 44.12], [-103.15, 44.25], [-103.25, 44.5], [-103.03, 45.03], [-102.5, 45.25], [-102.25, 45.15], [-102.0, 45.25], [-101.75, 45.15], [-101.5, 45.25], [-100.97, 45.03], [-100.82, 44.68], [-100.75, 44.65], [-100.5, 44.75], [-99.97, 44.53], [-99.82, 44.18], [-99.47, 44.03], [-99.25, 43.5], [-99.35, 43.25], [-99.25, 43.0], [-99.47, 42.47], [-99.82, 42.32], [-99.97, 41.97], [-100.32, 41.82], [-100.47, 41.47], [-100.82, 41.32], [-100.97, 40.97], [-101.5, 40.75], [-101.75, 40.85], [-102.0, 40.75], [-102.25, 40.85], [-102.5, 40.75], [-102.75, 40.85], [-103.0, 40.75], [-103.25, 40.85], [-103.5, 40.75], [-104.03, 40.97], [-104.18, 41.32], [-104.53, 41.47], [-104.75, 42.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.888598215795525}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.929408786627319}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.686478153984353, 11.66337169857178, 12.066799448938013]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.097255216415647, 8.859565886852408, 10.55783826447805]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.552420925383434, -6.773207197215161, -6.462598237283359]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.888598215795525, -7.44580477414587, -7.800801661955006]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6937574966701823, -1.541202671049299, -1.4969061732585003]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.00978273680068, -1.7043553352607357, -1.8360307782219045]}}