{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:00.005571", "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": "2022-May-07_to_2022-May-10_45.5_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": 2022050000339}, "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": "May 07 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 10 2022"}, "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": 59223.07073238778}, "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", "Iraq", "T\u00fcrkiye"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": 45.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "45.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 41.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 46.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[41.5, 39.25], [42.03, 39.03], [42.18, 38.68], [42.25, 38.65], [42.32, 38.68], [42.35, 38.75], [42.25, 39.0], [42.47, 39.53], [43.0, 39.75], [43.53, 39.53], [43.75, 39.0], [43.65, 38.75], [43.75, 38.5], [43.65, 38.25], [43.75, 38.0], [43.65, 37.75], [43.68, 37.68], [43.75, 37.65], [44.0, 37.75], [44.25, 37.65], [44.5, 37.75], [44.75, 37.65], [45.0, 37.75], [45.53, 37.53], [45.68, 37.18], [45.75, 37.15], [46.0, 37.25], [46.53, 37.03], [46.68, 36.68], [47.03, 36.53], [47.25, 36.0], [47.03, 35.47], [46.5, 35.25], [46.25, 35.35], [46.18, 35.32], [46.03, 34.97], [45.5, 34.75], [45.25, 34.85], [45.0, 34.75], [44.47, 34.97], [44.25, 35.5], [44.35, 35.75], [44.32, 35.82], [43.97, 35.97], [43.82, 36.32], [43.75, 36.35], [43.5, 36.25], [43.25, 36.35], [43.0, 36.25], [42.47, 36.47], [42.32, 36.82], [42.25, 36.85], [42.0, 36.75], [41.47, 36.97], [41.25, 37.5], [41.35, 37.75], [41.32, 37.82], [40.97, 37.97], [40.75, 38.5], [40.97, 39.03], [41.5, 39.25]]]]}}, "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": {"2022-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 37.97], [40.75, 38.5], [40.97, 39.03], [41.5, 39.25], [42.03, 39.03], [42.18, 38.68], [42.25, 38.65], [42.32, 38.68], [42.47, 39.03], [43.0, 39.25], [43.53, 39.03], [43.75, 38.5], [43.65, 38.25], [43.75, 38.0], [43.65, 37.75], [43.68, 37.68], [43.75, 37.65], [44.0, 37.75], [44.25, 37.65], [44.5, 37.75], [44.75, 37.65], [45.0, 37.75], [45.53, 37.53], [45.68, 37.18], [46.03, 37.03], [46.18, 36.68], [46.53, 36.53], [46.75, 36.0], [46.53, 35.47], [46.18, 35.32], [46.03, 34.97], [45.5, 34.75], [45.25, 34.85], [45.0, 34.75], [44.47, 34.97], [44.25, 35.5], [44.35, 35.75], [44.32, 35.82], [43.97, 35.97], [43.82, 36.32], [43.75, 36.35], [43.5, 36.25], [43.25, 36.35], [43.0, 36.25], [42.47, 36.47], [42.32, 36.82], [42.25, 36.85], [42.0, 36.75], [41.47, 36.97], [41.25, 37.5], [41.35, 37.75], [41.32, 37.82], [40.97, 37.97]]]]}, "2022-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 37.97], [40.75, 38.5], [40.97, 39.03], [41.5, 39.25], [42.03, 39.03], [42.18, 38.68], [42.25, 38.65], [42.32, 38.68], [42.35, 38.75], [42.25, 39.0], [42.47, 39.53], [43.0, 39.75], [43.53, 39.53], [43.75, 39.0], [43.65, 38.75], [43.75, 38.5], [43.65, 38.25], [43.75, 38.0], [43.65, 37.75], [43.68, 37.68], [43.75, 37.65], [44.0, 37.75], [44.25, 37.65], [44.5, 37.75], [44.75, 37.65], [45.0, 37.75], [45.53, 37.53], [45.68, 37.18], [45.75, 37.15], [46.0, 37.25], [46.53, 37.03], [46.68, 36.68], [47.03, 36.53], [47.25, 36.0], [47.03, 35.47], [46.5, 35.25], [46.25, 35.35], [46.18, 35.32], [46.03, 34.97], [45.5, 34.75], [45.25, 34.85], [45.0, 34.75], [44.47, 34.97], [44.25, 35.5], [44.35, 35.75], [44.32, 35.82], [43.97, 35.97], [43.82, 36.32], [43.75, 36.35], [43.5, 36.25], [43.25, 36.35], [43.0, 36.25], [42.47, 36.47], [42.32, 36.82], [42.25, 36.85], [42.0, 36.75], [41.47, 36.97], [41.25, 37.5], [41.35, 37.75], [41.32, 37.82], [40.97, 37.97]]]]}, "2022-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 37.97], [40.75, 38.5], [40.97, 39.03], [41.5, 39.25], [42.03, 39.03], [42.18, 38.68], [42.25, 38.65], [42.32, 38.68], [42.35, 38.75], [42.25, 39.0], [42.47, 39.53], [43.0, 39.75], [43.53, 39.53], [43.75, 39.0], [43.65, 38.75], [43.75, 38.5], [43.65, 38.25], [43.75, 38.0], [43.65, 37.75], [43.68, 37.68], [43.75, 37.65], [44.0, 37.75], [44.25, 37.65], [44.5, 37.75], [44.75, 37.65], [45.0, 37.75], [45.53, 37.53], [45.68, 37.18], [45.75, 37.15], [46.0, 37.25], [46.53, 37.03], [46.68, 36.68], [47.03, 36.53], [47.25, 36.0], [47.03, 35.47], [46.5, 35.25], [46.25, 35.35], [46.18, 35.32], [46.03, 34.97], [45.5, 34.75], [45.25, 34.85], [45.0, 34.75], [44.47, 34.97], [44.25, 35.5], [44.35, 35.75], [44.32, 35.82], [43.97, 35.97], [43.82, 36.32], [43.75, 36.35], [43.5, 36.25], [43.25, 36.35], [43.0, 36.25], [42.47, 36.47], [42.32, 36.82], [42.25, 36.85], [42.0, 36.75], [41.47, 36.97], [41.25, 37.5], [41.35, 37.75], [41.32, 37.82], [40.97, 37.97]]]]}, "2022-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 37.97], [40.75, 38.5], [40.97, 39.03], [41.5, 39.25], [42.03, 39.03], [42.2, 38.63], [42.32, 38.68], [42.35, 38.75], [42.25, 39.0], [42.47, 39.53], [43.0, 39.75], [43.53, 39.53], [43.75, 39.0], [43.65, 38.75], [43.75, 38.5], [43.65, 38.25], [43.75, 38.0], [43.65, 37.75], [43.68, 37.68], [43.75, 37.65], [44.0, 37.75], [44.25, 37.65], [44.5, 37.75], [44.75, 37.65], [45.0, 37.75], [45.53, 37.53], [45.68, 37.18], [45.75, 37.15], [46.0, 37.25], [46.53, 37.03], [46.68, 36.68], [47.03, 36.53], [47.25, 36.0], [47.03, 35.47], [46.5, 35.25], [46.25, 35.35], [46.18, 35.32], [46.03, 34.97], [45.5, 34.75], [45.25, 34.85], [45.0, 34.75], [44.47, 34.97], [44.25, 35.5], [44.35, 35.75], [44.32, 35.82], [43.97, 35.97], [43.82, 36.32], [43.75, 36.35], [43.5, 36.25], [42.97, 36.47], [42.82, 36.82], [42.75, 36.85], [42.5, 36.75], [42.25, 36.85], [42.0, 36.75], [41.47, 36.97], [41.25, 37.5], [41.38, 37.8], [40.97, 37.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.0774087163524655}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.358910814059054}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.450596321114233, 9.786320859401997, 10.901903984021658, 10.392208490734617]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.0262939985536264, 3.058618156825048, 3.5748204010902214, 2.989212813058316]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.950417856660776, -4.610863014971447, -3.7561642970217926, -4.17697516371181]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.0774087163524655, -5.665899787862713, -4.181080222715991, -5.036031702935702]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7998172405536157, -1.6807536201502469, -1.3835538106507463, -1.554779910044948]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1844705241215654, -1.977199142547653, -1.5576124979958559, -1.9155908327437678]}}