{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:01.404263", "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": "2024-Sep-28_to_2024-Sep-30_51.0_36.0"}, "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": 2024090000622}, "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": "September 28 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 30 2024"}, "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": 126617.07798154252}, "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, Islamic Republic of"]}, "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": 36.0}, "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": 51.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "51.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 48.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 54.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[47.75, 36.0], [47.97, 36.53], [48.5, 36.75], [48.75, 36.65], [49.0, 36.75], [49.25, 36.65], [49.32, 36.68], [49.47, 37.03], [50.0, 37.25], [50.25, 37.15], [50.5, 37.25], [50.75, 37.15], [51.0, 37.25], [51.53, 37.03], [51.68, 36.68], [51.75, 36.65], [52.0, 36.75], [52.53, 36.53], [52.68, 36.18], [52.75, 36.15], [53.0, 36.25], [53.25, 36.15], [53.5, 36.25], [53.75, 36.15], [54.0, 36.25], [54.25, 36.15], [54.5, 36.25], [55.03, 36.03], [55.25, 35.5], [55.03, 34.97], [54.68, 34.82], [54.53, 34.47], [54.18, 34.32], [54.03, 33.97], [53.5, 33.75], [53.25, 33.85], [53.13, 33.8], [53.25, 33.5], [53.03, 32.97], [52.68, 32.82], [52.53, 32.47], [52.0, 32.25], [51.75, 32.35], [51.5, 32.25], [51.25, 32.35], [51.0, 32.25], [50.75, 32.35], [50.5, 32.25], [49.97, 32.47], [49.75, 33.0], [49.96, 33.5], [49.82, 33.82], [49.47, 33.97], [49.32, 34.32], [48.97, 34.47], [48.75, 35.0], [48.85, 35.25], [48.82, 35.32], [48.75, 35.35], [48.5, 35.25], [47.97, 35.47], [47.75, 36.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.5, 35.25], [47.97, 35.47], [47.75, 36.0], [47.97, 36.53], [48.5, 36.75], [48.75, 36.65], [49.0, 36.75], [49.25, 36.65], [49.32, 36.68], [49.47, 37.03], [50.0, 37.25], [50.25, 37.15], [50.5, 37.25], [50.75, 37.15], [51.0, 37.25], [51.53, 37.03], [51.68, 36.68], [51.75, 36.65], [52.0, 36.75], [52.53, 36.53], [52.68, 36.18], [52.75, 36.15], [53.0, 36.25], [53.25, 36.15], [53.5, 36.25], [53.75, 36.15], [54.0, 36.25], [54.25, 36.15], [54.5, 36.25], [55.03, 36.03], [55.25, 35.5], [55.03, 34.97], [54.68, 34.82], [54.53, 34.47], [54.18, 34.32], [54.03, 33.97], [53.5, 33.75], [53.25, 33.85], [53.13, 33.8], [53.25, 33.5], [53.03, 32.97], [52.68, 32.82], [52.53, 32.47], [52.0, 32.25], [51.75, 32.35], [51.5, 32.25], [51.25, 32.35], [51.0, 32.25], [50.75, 32.35], [50.5, 32.25], [49.97, 32.47], [49.75, 33.0], [49.96, 33.5], [49.82, 33.82], [49.47, 33.97], [49.32, 34.32], [48.97, 34.47], [48.75, 35.0], [48.85, 35.25], [48.82, 35.32], [48.75, 35.35], [48.5, 35.25]]]]}, "2024-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.5, 35.25], [47.97, 35.47], [47.75, 36.0], [47.97, 36.53], [48.5, 36.75], [48.75, 36.65], [49.0, 36.75], [49.25, 36.65], [49.32, 36.68], [49.47, 37.03], [50.0, 37.25], [50.25, 37.15], [50.5, 37.25], [50.75, 37.15], [51.0, 37.25], [51.53, 37.03], [51.68, 36.68], [51.75, 36.65], [52.0, 36.75], [52.53, 36.53], [52.68, 36.18], [52.75, 36.15], [53.0, 36.25], [53.25, 36.15], [53.5, 36.25], [53.75, 36.15], [54.0, 36.25], [54.25, 36.15], [54.5, 36.25], [55.03, 36.03], [55.25, 35.5], [55.03, 34.97], [54.68, 34.82], [54.53, 34.47], [54.18, 34.32], [54.03, 33.97], [53.5, 33.75], [53.25, 33.85], [53.13, 33.8], [53.25, 33.5], [53.03, 32.97], [52.68, 32.82], [52.53, 32.47], [52.0, 32.25], [51.75, 32.35], [51.5, 32.25], [51.25, 32.35], [51.0, 32.25], [50.75, 32.35], [50.5, 32.25], [49.97, 32.47], [49.75, 33.0], [49.96, 33.5], [49.82, 33.82], [49.47, 33.97], [49.32, 34.32], [48.97, 34.47], [48.75, 35.0], [48.85, 35.25], [48.82, 35.32], [48.75, 35.35], [48.5, 35.25]]]]}, "2024-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.5, 35.25], [47.97, 35.47], [47.75, 36.0], [47.97, 36.53], [48.5, 36.75], [48.75, 36.65], [49.0, 36.75], [49.25, 36.65], [49.32, 36.68], [49.47, 37.03], [50.0, 37.25], [50.25, 37.15], [50.5, 37.25], [50.75, 37.15], [51.0, 37.25], [51.53, 37.03], [51.68, 36.68], [51.75, 36.65], [52.0, 36.75], [52.53, 36.53], [52.68, 36.18], [52.75, 36.15], [53.0, 36.25], [53.25, 36.15], [53.5, 36.25], [53.75, 36.15], [54.0, 36.25], [54.25, 36.15], [54.5, 36.25], [55.03, 36.03], [55.25, 35.5], [55.03, 34.97], [54.68, 34.82], [54.53, 34.47], [54.18, 34.32], [54.03, 33.97], [53.5, 33.75], [53.25, 33.85], [53.13, 33.8], [53.25, 33.5], [53.03, 32.97], [52.68, 32.82], [52.53, 32.47], [52.0, 32.25], [51.75, 32.35], [51.5, 32.25], [51.25, 32.35], [51.0, 32.25], [50.75, 32.35], [50.5, 32.25], [49.97, 32.47], [49.75, 33.0], [49.96, 33.5], [49.82, 33.82], [49.47, 33.97], [49.32, 34.32], [48.97, 34.47], [48.75, 35.0], [48.85, 35.25], [48.82, 35.32], [48.75, 35.35], [48.5, 35.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.679114260527626}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.062565280643062}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.772861836751304, 13.446934509277355, 15.265753377278656]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.051937357584677, 1.6624618530273665, 4.70526021321615]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.055989372840722, -7.102947005814314, -5.028759463274147]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.701203736753257, -9.679114260527626, -6.311481550802625]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.6694279759694166, -3.012006604000939, -2.0368010909076513]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-4.0126218367196875, -3.9894656985901396, -2.706446215590341]}}