{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:41.176305", "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": "2019-May-11_to_2019-May-14_44.0_24.0"}, "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": 2019050000340}, "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 11 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 14 2019"}, "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": 56529.18488977539}, "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": ["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": 24.0}, "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": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 41.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 24.03], [41.32, 24.18], [41.35, 24.25], [41.25, 24.5], [41.47, 25.03], [42.0, 25.25], [42.25, 25.15], [42.5, 25.25], [42.75, 25.15], [43.0, 25.25], [43.25, 25.15], [43.5, 25.25], [44.03, 25.03], [44.18, 24.68], [44.53, 24.53], [44.75, 24.0], [44.65, 23.75], [44.75, 23.5], [44.65, 23.25], [44.75, 23.0], [44.53, 22.47], [44.0, 22.25], [43.75, 22.35], [43.5, 22.25], [42.97, 22.47], [42.8, 22.88], [42.5, 22.75], [42.25, 22.85], [42.18, 22.82], [42.03, 22.47], [41.5, 22.25], [40.97, 22.47], [40.75, 23.0], [40.85, 23.25], [40.75, 23.5], [40.97, 24.03]]]]}, "2019-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 24.03], [41.32, 24.18], [41.35, 24.25], [41.25, 24.5], [41.47, 25.03], [42.0, 25.25], [42.25, 25.15], [42.5, 25.25], [42.75, 25.15], [43.0, 25.25], [43.25, 25.15], [43.5, 25.25], [43.75, 25.15], [44.0, 25.25], [44.25, 25.15], [44.5, 25.25], [45.03, 25.03], [45.18, 24.68], [45.53, 24.53], [45.75, 24.0], [45.65, 23.75], [45.75, 23.5], [45.53, 22.97], [45.0, 22.75], [44.7, 22.88], [44.53, 22.47], [44.0, 22.25], [43.75, 22.35], [43.5, 22.25], [42.97, 22.47], [42.8, 22.88], [42.5, 22.75], [42.25, 22.85], [42.18, 22.82], [42.03, 22.47], [41.5, 22.25], [40.97, 22.47], [40.75, 23.0], [40.85, 23.25], [40.75, 23.5], [40.97, 24.03]]]]}, "2019-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 24.03], [41.32, 24.18], [41.35, 24.25], [41.25, 24.5], [41.47, 25.03], [42.0, 25.25], [42.25, 25.15], [42.5, 25.25], [42.75, 25.15], [43.0, 25.25], [43.25, 25.15], [43.5, 25.25], [43.75, 25.15], [44.0, 25.25], [44.25, 25.15], [44.5, 25.25], [45.03, 25.03], [45.18, 24.68], [45.53, 24.53], [45.75, 24.0], [45.65, 23.75], [45.75, 23.5], [45.53, 22.97], [45.0, 22.75], [44.7, 22.88], [44.53, 22.47], [44.0, 22.25], [43.75, 22.35], [43.5, 22.25], [42.97, 22.47], [42.8, 22.88], [42.5, 22.75], [42.25, 22.85], [42.18, 22.82], [42.03, 22.47], [41.5, 22.25], [40.97, 22.47], [40.75, 23.0], [40.85, 23.25], [40.75, 23.5], [40.97, 24.03]]]]}, "2019-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.82, 24.68], [42.97, 25.03], [43.5, 25.25], [43.75, 25.15], [44.0, 25.25], [44.25, 25.15], [44.5, 25.25], [45.03, 25.03], [45.18, 24.68], [45.53, 24.53], [45.75, 24.0], [45.65, 23.75], [45.75, 23.5], [45.53, 22.97], [45.0, 22.75], [44.47, 22.97], [44.32, 23.32], [44.25, 23.35], [44.0, 23.25], [43.75, 23.35], [43.5, 23.25], [43.25, 23.35], [43.0, 23.25], [42.7, 23.38], [42.53, 22.97], [42.0, 22.75], [41.47, 22.97], [41.25, 23.5], [41.47, 24.03], [42.0, 24.25], [42.3, 24.13], [42.47, 24.53], [42.82, 24.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.579499511474523}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.750529209852454}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.534483368812687, 26.059799338713105, 26.868702391365787, 27.848618349438368]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.700728507160818, 24.737334160272667, 26.00739346687095, 27.11564213789603]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.8966647994130503, -4.559596274651412, -3.9004372927477844, -3.1133755301229824]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3259909741746583, -5.579499511474523, -4.741885246949778, -3.6968289265685144]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.391617075484445, -2.1700567337792993, -1.8368758325936394, -1.4969527226398724]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5740627912607987, -2.7160325751675485, -2.258088535196933, -1.785486064051223]}}