{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:11.503551", "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": "2013-Aug-30_to_2013-Sep-02_55.5_20.0"}, "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": 2013080001381}, "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 30 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 02 2013"}, "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": 89961.46091778552}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "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": 20.0}, "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": 55.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "55.5\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": 56.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.75, 21.0], [53.97, 21.53], [54.32, 21.68], [54.47, 22.03], [55.0, 22.25], [55.25, 22.15], [55.5, 22.25], [56.03, 22.03], [56.18, 21.68], [56.25, 21.65], [56.5, 21.75], [57.03, 21.53], [57.25, 21.0], [57.15, 20.75], [57.25, 20.5], [57.15, 20.25], [57.25, 20.0], [57.15, 19.75], [57.25, 19.5], [57.15, 19.25], [57.25, 19.0], [57.03, 18.47], [56.5, 18.25], [55.97, 18.47], [55.82, 18.82], [55.75, 18.85], [55.5, 18.75], [54.97, 18.97], [54.82, 19.32], [54.47, 19.47], [54.25, 20.0], [54.35, 20.25], [54.32, 20.32], [53.97, 20.47], [53.75, 21.0]]]]}, "2013-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.75, 20.5], [52.97, 21.03], [53.32, 21.18], [53.47, 21.53], [54.0, 21.75], [54.25, 21.65], [54.32, 21.68], [54.47, 22.03], [55.0, 22.25], [55.25, 22.15], [55.5, 22.25], [56.03, 22.03], [56.18, 21.68], [56.25, 21.65], [56.5, 21.75], [57.03, 21.53], [57.25, 21.0], [57.15, 20.75], [57.25, 20.5], [57.15, 20.25], [57.25, 20.0], [57.15, 19.75], [57.25, 19.5], [57.15, 19.25], [57.25, 19.0], [57.03, 18.47], [56.5, 18.25], [56.2, 18.38], [56.03, 17.97], [55.5, 17.75], [55.25, 17.85], [55.0, 17.75], [54.47, 17.97], [54.25, 18.5], [54.35, 18.75], [54.32, 18.82], [53.97, 18.97], [53.82, 19.32], [53.47, 19.47], [53.32, 19.82], [52.97, 19.97], [52.75, 20.5]]]]}, "2013-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.75, 20.5], [52.97, 21.03], [53.32, 21.18], [53.47, 21.53], [54.0, 21.75], [54.25, 21.65], [54.32, 21.68], [54.47, 22.03], [55.0, 22.25], [55.25, 22.15], [55.5, 22.25], [56.03, 22.03], [56.18, 21.68], [56.25, 21.65], [56.5, 21.75], [57.03, 21.53], [57.25, 21.0], [57.15, 20.75], [57.25, 20.5], [57.15, 20.25], [57.25, 20.0], [57.15, 19.75], [57.25, 19.5], [57.15, 19.25], [57.25, 19.0], [57.03, 18.47], [56.5, 18.25], [56.2, 18.38], [56.03, 17.97], [55.5, 17.75], [55.25, 17.85], [55.0, 17.75], [54.47, 17.97], [54.25, 18.5], [54.35, 18.75], [54.32, 18.82], [53.97, 18.97], [53.82, 19.32], [53.47, 19.47], [53.32, 19.82], [52.97, 19.97], [52.75, 20.5]]]]}, "2013-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.75, 20.5], [52.97, 21.03], [53.32, 21.18], [53.47, 21.53], [54.0, 21.75], [54.25, 21.65], [54.5, 21.75], [55.0, 21.54], [55.5, 21.75], [55.75, 21.65], [56.0, 21.75], [56.53, 21.53], [56.68, 21.18], [57.03, 21.03], [57.25, 20.5], [57.03, 19.97], [56.68, 19.82], [56.65, 19.75], [56.75, 19.5], [56.53, 18.97], [56.18, 18.82], [56.15, 18.75], [56.25, 18.5], [56.03, 17.97], [55.5, 17.75], [55.25, 17.85], [55.0, 17.75], [54.47, 17.97], [54.25, 18.5], [54.35, 18.75], [54.32, 18.82], [53.97, 18.97], [53.82, 19.32], [53.47, 19.47], [53.32, 19.82], [52.97, 19.97], [52.75, 20.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.986806506656251}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.669530856457453}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.51761588761542, 30.547128040463974, 30.102481988482054, 29.83215021497267]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.7630595547177, 26.251638338996656, 26.31598984716277, 26.29890540745572]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2903437603224575, -3.4648339739412752, -3.7568754058062415, -4.1213007379055355]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.928810943353824, -4.388798794847162, -4.539051652980561, -4.986806506656251]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6978406187999031, -1.7762657158622475, -1.8138096630839038, -1.8715527185876306]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9310147296252667, -2.1688023165492147, -2.1692213769246864, -2.216838167455396]}}