{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:51.281960", "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-Aug-17_to_2024-Aug-23_54.5_22.0"}, "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": 2024080000445}, "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": "August 17 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 23 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 168404.43345008302}, "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": ["Oman", "Saudi Arabia", "United Arab Emirates"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "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": ["Gulf of Oman", "Persian Gulf"]}, "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": 22.0}, "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": 54.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 53.25}, "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": 20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.35, 25.25], [55.25, 25.5], [55.47, 26.03], [56.0, 26.25], [56.53, 26.03], [56.75, 25.5], [56.65, 25.25], [56.68, 25.18], [57.03, 25.03], [57.25, 24.5], [57.15, 24.25], [57.25, 24.0], [57.03, 23.47], [56.5, 23.25], [55.97, 23.47], [55.82, 23.82], [55.47, 23.97], [55.25, 24.5], [55.35, 24.75], [55.25, 25.0], [55.35, 25.25]]]]}, "2024-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[58.25, 22.5], [58.47, 23.03], [59.0, 23.25], [59.25, 23.15], [59.5, 23.25], [60.03, 23.03], [60.25, 22.5], [60.03, 21.97], [59.5, 21.75], [59.25, 21.85], [59.0, 21.75], [58.47, 21.97], [58.25, 22.5]]], [[[55.25, 25.5], [55.47, 26.03], [56.0, 26.25], [56.53, 26.03], [56.75, 25.5], [56.65, 25.25], [56.68, 25.18], [57.03, 25.03], [57.25, 24.5], [57.15, 24.25], [57.18, 24.18], [57.25, 24.15], [57.5, 24.25], [58.03, 24.03], [58.25, 23.5], [58.03, 22.97], [57.5, 22.75], [57.25, 22.85], [57.0, 22.75], [56.47, 22.97], [56.32, 23.32], [55.97, 23.47], [55.82, 23.82], [55.47, 23.97], [55.25, 24.5], [55.35, 24.75], [55.25, 25.0], [55.35, 25.25], [55.25, 25.5]]]]}, "2024-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.97, 22.53], [53.32, 22.68], [53.47, 23.03], [53.82, 23.18], [53.97, 23.53], [54.5, 23.75], [54.75, 23.65], [54.82, 23.68], [54.97, 24.03], [55.38, 24.2], [55.25, 24.5], [55.35, 24.75], [55.25, 25.0], [55.35, 25.25], [55.25, 25.5], [55.47, 26.03], [55.82, 26.18], [55.97, 26.53], [56.5, 26.75], [57.03, 26.53], [57.25, 26.0], [57.03, 25.47], [56.68, 25.32], [56.65, 25.25], [56.68, 25.18], [57.03, 25.03], [57.25, 24.5], [57.15, 24.25], [57.18, 24.18], [57.25, 24.15], [57.5, 24.25], [58.03, 24.03], [58.18, 23.68], [58.25, 23.65], [58.5, 23.75], [59.03, 23.53], [59.18, 23.18], [59.25, 23.15], [59.5, 23.25], [60.03, 23.03], [60.25, 22.5], [60.03, 21.97], [59.5, 21.75], [59.25, 21.85], [59.0, 21.75], [58.75, 21.85], [58.5, 21.75], [58.25, 21.85], [58.0, 21.75], [57.75, 21.85], [57.68, 21.82], [57.65, 21.75], [57.68, 21.68], [58.03, 21.53], [58.25, 21.0], [58.15, 20.75], [58.25, 20.5], [58.03, 19.97], [57.5, 19.75], [56.97, 19.97], [56.82, 20.32], [56.75, 20.35], [56.5, 20.25], [56.25, 20.35], [56.0, 20.25], [55.75, 20.35], [55.68, 20.32], [55.53, 19.97], [55.0, 19.75], [54.47, 19.97], [54.32, 20.32], [54.25, 20.35], [54.0, 20.25], [53.47, 20.47], [53.32, 20.82], [52.97, 20.97], [52.75, 21.5], [52.85, 21.75], [52.75, 22.0], [52.97, 22.53]]]]}, "2024-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.97, 22.53], [53.32, 22.68], [53.47, 23.03], [53.82, 23.18], [53.97, 23.53], [54.5, 23.75], [54.75, 23.65], [54.82, 23.68], [54.97, 24.03], [55.38, 24.2], [55.25, 24.5], [55.35, 24.75], [55.25, 25.0], [55.35, 25.25], [55.25, 25.5], [55.47, 26.03], [55.82, 26.18], [55.85, 26.25], [55.75, 26.5], [55.97, 27.03], [56.5, 27.25], [57.03, 27.03], [57.25, 26.5], [57.15, 26.25], [57.25, 26.0], [57.03, 25.47], [56.68, 25.32], [56.65, 25.25], [56.68, 25.18], [57.03, 25.03], [57.25, 24.5], [57.15, 24.25], [57.18, 24.18], [57.25, 24.15], [57.5, 24.25], [58.03, 24.03], [58.18, 23.68], [58.25, 23.65], [58.5, 23.75], [59.03, 23.53], [59.18, 23.18], [59.25, 23.15], [59.5, 23.25], [60.03, 23.03], [60.25, 22.5], [60.03, 21.97], [59.5, 21.75], [59.25, 21.85], [59.0, 21.75], [58.75, 21.85], [58.5, 21.75], [58.25, 21.85], [58.0, 21.75], [57.75, 21.85], [57.68, 21.82], [57.65, 21.75], [57.68, 21.68], [58.03, 21.53], [58.25, 21.0], [58.15, 20.75], [58.25, 20.5], [58.03, 19.97], [57.5, 19.75], [56.97, 19.97], [56.82, 20.32], [56.75, 20.35], [56.5, 20.25], [56.25, 20.35], [56.0, 20.25], [55.75, 20.35], [55.68, 20.32], [55.53, 19.97], [55.0, 19.75], [54.47, 19.97], [54.32, 20.32], [54.25, 20.35], [54.0, 20.25], [53.47, 20.47], [53.32, 20.82], [52.97, 20.97], [52.75, 21.5], [52.85, 21.75], [52.75, 22.0], [52.97, 22.53]]]]}, "2024-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.97, 22.53], [53.32, 22.68], [53.47, 23.03], [53.82, 23.18], [53.97, 23.53], [54.5, 23.75], [54.75, 23.65], [54.82, 23.68], [54.97, 24.03], [55.38, 24.2], [55.25, 24.5], [55.35, 24.75], [55.25, 25.0], [55.35, 25.25], [55.25, 25.5], [55.47, 26.03], [55.82, 26.18], [55.85, 26.25], [55.75, 26.5], [55.97, 27.03], [56.5, 27.25], [57.03, 27.03], [57.25, 26.5], [57.15, 26.25], [57.25, 26.0], [57.15, 25.75], [57.25, 25.5], [57.04, 25.0], [57.25, 24.5], [57.15, 24.25], [57.18, 24.18], [57.25, 24.15], [57.5, 24.25], [58.03, 24.03], [58.18, 23.68], [58.25, 23.65], [58.5, 23.75], [59.03, 23.53], [59.18, 23.18], [59.53, 23.03], [59.75, 22.5], [59.53, 21.97], [59.0, 21.75], [58.75, 21.85], [58.5, 21.75], [58.25, 21.85], [58.0, 21.75], [57.75, 21.85], [57.68, 21.82], [57.65, 21.75], [57.68, 21.68], [58.03, 21.53], [58.25, 21.0], [58.15, 20.75], [58.25, 20.5], [58.03, 19.97], [57.5, 19.75], [56.97, 19.97], [56.82, 20.32], [56.75, 20.35], [56.5, 20.25], [56.25, 20.35], [56.0, 20.25], [55.75, 20.35], [55.68, 20.32], [55.53, 19.97], [55.0, 19.75], [54.47, 19.97], [54.32, 20.32], [54.25, 20.35], [54.0, 20.25], [53.47, 20.47], [53.32, 20.82], [52.97, 20.97], [52.75, 21.5], [52.85, 21.75], [52.75, 22.0], [52.97, 22.53]]]]}, "2024-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.97, 22.53], [53.32, 22.68], [53.47, 23.03], [53.82, 23.18], [53.97, 23.53], [54.5, 23.75], [54.75, 23.65], [54.82, 23.68], [54.97, 24.03], [55.5, 24.25], [55.75, 24.15], [56.0, 24.25], [56.5, 24.04], [57.0, 24.25], [57.25, 24.15], [57.5, 24.25], [58.03, 24.03], [58.25, 23.5], [58.03, 22.97], [57.5, 22.75], [57.25, 22.85], [57.0, 22.75], [56.7, 22.88], [56.65, 22.75], [56.68, 22.68], [57.03, 22.53], [57.25, 22.0], [57.03, 21.47], [56.68, 21.32], [56.53, 20.97], [56.0, 20.75], [55.75, 20.85], [55.5, 20.75], [55.25, 20.85], [55.0, 20.75], [54.75, 20.85], [54.5, 20.75], [54.25, 20.85], [54.0, 20.75], [53.47, 20.97], [53.32, 21.32], [52.97, 21.47], [52.75, 22.0], [52.97, 22.53]]], [[[56.5, 27.25], [57.03, 27.03], [57.25, 26.5], [57.04, 26.0], [57.25, 25.5], [57.03, 24.97], [56.5, 24.75], [55.97, 24.97], [55.75, 25.5], [55.96, 26.0], [55.75, 26.5], [55.97, 27.03], [56.5, 27.25]]]]}, "2024-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.5, 26.25], [57.03, 26.03], [57.25, 25.5], [57.03, 24.97], [56.5, 24.75], [55.97, 24.97], [55.75, 25.5], [55.97, 26.03], [56.5, 26.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.711799424472645}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.523226541481357}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.168935305192406, 29.887222236593175, 31.591416672357298, 31.39982480203122, 30.73756795913914, 32.95432933321348, 28.728738148184505]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.03035742326273, 27.72942185040364, 27.310492782824042, 27.819321128329477, 27.934928307876703, 28.333949427249365, 28.728738148184505]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.627130260644833, -2.9742351752989418, -3.4793065805954027, -3.50872319672407, -4.085078229489239, -2.8610887926446176, -1.5795833218623443]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9691761215204338, -3.3626805142205853, -4.916189005403567, -4.864805862936407, -5.711799424472645, -4.037260125357648, -1.5795833218623443]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.680350900698039, -1.8927162946661626, -2.008492191166532, -2.0328830120220887, -2.4238279108574754, -1.8064075157815223, -1.2973684918768087]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.974196060025106, -2.3004905826383224, -2.7432421226181116, -2.514642186921577, -3.396789850100034, -2.186578325030258, -1.2973684918768087]}}