{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:37.336771", "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": "2011-Oct-22_to_2011-Oct-25_59.5_30.5"}, "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": 2011100001014}, "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 22 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 25 2011"}, "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": 58490.141697759245}, "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": ["Iran"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 30.5}, "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": 59.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "59.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 56.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 59.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.47, 32.03], [56.82, 32.18], [56.97, 32.53], [57.5, 32.75], [57.75, 32.65], [58.0, 32.75], [58.5, 32.54], [59.0, 32.75], [59.53, 32.53], [59.75, 32.0], [59.54, 31.5], [59.68, 31.18], [60.03, 31.03], [60.25, 30.5], [60.03, 29.97], [59.5, 29.75], [59.07, 29.93], [59.25, 29.5], [59.15, 29.25], [59.25, 29.0], [59.03, 28.47], [58.5, 28.25], [57.97, 28.47], [57.82, 28.82], [57.47, 28.97], [57.25, 29.5], [57.38, 29.8], [56.97, 29.97], [56.82, 30.32], [56.47, 30.47], [56.25, 31.0], [56.35, 31.25], [56.25, 31.5], [56.47, 32.03]], [[58.13, 30.2], [58.25, 30.15], [58.5, 30.25], [58.93, 30.07], [58.82, 30.32], [58.47, 30.47], [58.32, 30.82], [58.25, 30.85], [58.18, 30.82], [58.15, 30.75], [58.25, 30.5], [58.13, 30.2]]]]}, "2011-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.47, 32.03], [56.82, 32.18], [56.97, 32.53], [57.5, 32.75], [57.75, 32.65], [58.0, 32.75], [58.5, 32.54], [59.0, 32.75], [59.53, 32.53], [59.75, 32.0], [59.54, 31.5], [59.68, 31.18], [60.03, 31.03], [60.25, 30.5], [60.15, 30.25], [60.25, 30.0], [60.15, 29.75], [60.25, 29.5], [60.03, 28.97], [59.68, 28.82], [59.53, 28.47], [59.0, 28.25], [58.75, 28.35], [58.5, 28.25], [57.97, 28.47], [57.82, 28.82], [57.47, 28.97], [57.25, 29.5], [57.38, 29.8], [56.97, 29.97], [56.82, 30.32], [56.47, 30.47], [56.25, 31.0], [56.35, 31.25], [56.25, 31.5], [56.47, 32.03]]]]}, "2011-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.47, 32.03], [56.82, 32.18], [56.97, 32.53], [57.5, 32.75], [57.75, 32.65], [58.0, 32.75], [58.5, 32.54], [59.0, 32.75], [59.53, 32.53], [59.75, 32.0], [59.54, 31.5], [59.68, 31.18], [60.03, 31.03], [60.25, 30.5], [60.15, 30.25], [60.25, 30.0], [60.15, 29.75], [60.25, 29.5], [60.03, 28.97], [59.68, 28.82], [59.53, 28.47], [59.0, 28.25], [58.75, 28.35], [58.5, 28.25], [57.97, 28.47], [57.82, 28.82], [57.47, 28.97], [57.25, 29.5], [57.38, 29.8], [56.97, 29.97], [56.82, 30.32], [56.47, 30.47], [56.25, 31.0], [56.35, 31.25], [56.25, 31.5], [56.47, 32.03]]]]}, "2011-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[58.5, 31.75], [59.03, 31.53], [59.18, 31.18], [59.25, 31.15], [59.5, 31.25], [60.03, 31.03], [60.25, 30.5], [60.15, 30.25], [60.25, 30.0], [60.15, 29.75], [60.25, 29.5], [60.03, 28.97], [59.68, 28.82], [59.53, 28.47], [59.0, 28.25], [58.47, 28.47], [58.32, 28.82], [57.97, 28.97], [57.75, 29.5], [57.88, 29.8], [57.47, 29.97], [57.25, 30.5], [57.47, 31.03], [57.82, 31.18], [57.97, 31.53], [58.5, 31.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.430393287517347}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.198810189311741}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.656775149219015, 17.761385739067464, 18.904040149304535, 21.09993518086003]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.461975592863212, 11.712412263703413, 13.767664195972884, 19.241076911914035]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.29712161635282, -5.007896804221409, -3.72415639061839, -3.2174553712700598]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.990959070347799, -5.430393287517347, -4.4065636632048495, -3.7136472541895387]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7284350128690973, -2.031688018654256, -1.5535536904176082, -1.3632250305777112]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0867954493256136, -2.3940914142744845, -1.8733821480981565, -1.4877533482013752]}}