{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:50.522100", "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-Nov-10_to_2019-Nov-16_57.5_23.0"}, "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": 2019110000357}, "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": "November 10 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 16 2019"}, "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": 156953.36108975593}, "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"]}, "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": 23.0}, "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": 57.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "57.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 52.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 58.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[54.97, 25.53], [55.5, 25.75], [55.75, 25.65], [56.0, 25.75], [56.53, 25.53], [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], [58.53, 23.53], [58.75, 23.0], [58.53, 22.47], [58.0, 22.25], [57.75, 22.35], [57.5, 22.25], [57.25, 22.35], [57.0, 22.25], [56.47, 22.47], [56.32, 22.82], [55.97, 22.97], [55.82, 23.32], [55.47, 23.47], [55.32, 23.82], [54.97, 23.97], [54.75, 24.5], [54.85, 24.75], [54.75, 25.0], [54.97, 25.53]]]]}, "2019-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[54.97, 25.53], [55.5, 25.75], [55.75, 25.65], [56.0, 25.75], [56.53, 25.53], [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], [57.75, 24.15], [58.0, 24.25], [58.53, 24.03], [58.68, 23.68], [59.03, 23.53], [59.25, 23.0], [59.03, 22.47], [58.5, 22.25], [58.25, 22.35], [58.0, 22.25], [57.75, 22.35], [57.5, 22.25], [57.25, 22.35], [57.0, 22.25], [56.47, 22.47], [56.32, 22.82], [55.97, 22.97], [55.82, 23.32], [55.47, 23.47], [55.32, 23.82], [54.97, 23.97], [54.75, 24.5], [54.85, 24.75], [54.75, 25.0], [54.97, 25.53]]]]}, "2019-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[54.47, 23.03], [55.0, 23.25], [55.53, 23.03], [55.68, 22.68], [56.03, 22.53], [56.18, 22.18], [56.53, 22.03], [56.75, 21.5], [56.53, 20.97], [56.0, 20.75], [55.47, 20.97], [55.32, 21.32], [54.97, 21.47], [54.82, 21.82], [54.47, 21.97], [54.25, 22.5], [54.47, 23.03]]], [[[55.5, 25.75], [55.75, 25.65], [56.0, 25.75], [56.53, 25.53], [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], [57.75, 24.15], [58.0, 24.25], [58.53, 24.03], [58.68, 23.68], [59.03, 23.53], [59.25, 23.0], [59.03, 22.47], [58.5, 22.25], [58.25, 22.35], [58.0, 22.25], [57.75, 22.35], [57.5, 22.25], [57.25, 22.35], [57.0, 22.25], [56.47, 22.47], [56.32, 22.82], [55.97, 22.97], [55.82, 23.32], [55.47, 23.47], [55.32, 23.82], [54.97, 23.97], [54.75, 24.5], [54.85, 24.75], [54.75, 25.0], [54.97, 25.53], [55.5, 25.75]]]]}, "2019-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.85, 23.25], [53.75, 23.5], [53.97, 24.03], [54.38, 24.2], [54.25, 24.5], [54.47, 25.03], [54.82, 25.18], [54.97, 25.53], [55.5, 25.75], [55.75, 25.65], [56.0, 25.75], [56.53, 25.53], [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], [57.75, 24.15], [58.0, 24.25], [58.53, 24.03], [58.68, 23.68], [59.03, 23.53], [59.25, 23.0], [59.03, 22.47], [58.5, 22.25], [58.25, 22.35], [58.0, 22.25], [57.75, 22.35], [57.68, 22.32], [57.53, 21.97], [57.13, 21.8], [57.18, 21.68], [57.53, 21.53], [57.75, 21.0], [57.53, 20.47], [57.18, 20.32], [57.03, 19.97], [56.5, 19.75], [55.97, 19.97], [55.75, 20.5], [55.85, 20.75], [55.82, 20.82], [55.75, 20.85], [55.5, 20.75], [54.97, 20.97], [54.82, 21.32], [54.47, 21.47], [54.32, 21.82], [53.97, 21.97], [53.75, 22.5], [53.85, 22.75], [53.75, 23.0], [53.85, 23.25]]]]}, "2019-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.47, 22.53], [53.0, 22.75], [53.25, 22.65], [53.32, 22.68], [53.35, 22.75], [53.25, 23.0], [53.47, 23.53], [53.82, 23.68], [53.97, 24.03], [54.38, 24.2], [54.25, 24.5], [54.47, 25.03], [54.82, 25.18], [54.97, 25.53], [55.5, 25.75], [55.75, 25.65], [56.0, 25.75], [56.53, 25.53], [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], [57.75, 24.15], [58.0, 24.25], [58.53, 24.03], [58.68, 23.68], [59.03, 23.53], [59.25, 23.0], [59.03, 22.47], [58.5, 22.25], [58.25, 22.35], [58.0, 22.25], [57.75, 22.35], [57.68, 22.32], [57.53, 21.97], [57.18, 21.82], [57.15, 21.75], [57.18, 21.68], [57.53, 21.53], [57.75, 21.0], [57.53, 20.47], [57.18, 20.32], [57.15, 20.25], [57.25, 20.0], [57.03, 19.47], [56.5, 19.25], [55.97, 19.47], [55.75, 20.0], [55.85, 20.25], [55.75, 20.5], [55.85, 20.75], [55.82, 20.82], [55.75, 20.85], [55.68, 20.82], [55.53, 20.47], [55.0, 20.25], [54.75, 20.35], [54.5, 20.25], [54.25, 20.35], [54.0, 20.25], [53.47, 20.47], [53.32, 20.82], [53.25, 20.85], [53.0, 20.75], [52.47, 20.97], [52.25, 21.5], [52.35, 21.75], [52.25, 22.0], [52.47, 22.53]]]]}, "2019-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.47, 22.53], [53.0, 22.75], [53.25, 22.65], [53.32, 22.68], [53.35, 22.75], [53.25, 23.0], [53.47, 23.53], [53.82, 23.68], [53.97, 24.03], [54.38, 24.2], [54.25, 24.5], [54.47, 25.03], [55.0, 25.25], [55.53, 25.03], [55.7, 24.63], [55.82, 24.68], [55.97, 25.03], [56.5, 25.25], [57.03, 25.03], [57.25, 24.5], [57.15, 24.25], [57.18, 24.18], [57.25, 24.15], [57.5, 24.25], [57.75, 24.15], [58.0, 24.25], [58.53, 24.03], [58.68, 23.68], [59.03, 23.53], [59.25, 23.0], [59.03, 22.47], [58.5, 22.25], [58.25, 22.35], [58.0, 22.25], [57.75, 22.35], [57.68, 22.32], [57.53, 21.97], [57.18, 21.82], [57.15, 21.75], [57.18, 21.68], [57.53, 21.53], [57.75, 21.0], [57.53, 20.47], [57.18, 20.32], [57.15, 20.25], [57.25, 20.0], [57.03, 19.47], [56.5, 19.25], [55.97, 19.47], [55.75, 20.0], [55.85, 20.25], [55.75, 20.5], [55.85, 20.75], [55.82, 20.82], [55.75, 20.85], [55.68, 20.82], [55.53, 20.47], [55.0, 20.25], [54.75, 20.35], [54.5, 20.25], [54.25, 20.35], [54.0, 20.25], [53.47, 20.47], [53.32, 20.82], [53.25, 20.85], [53.0, 20.75], [52.47, 20.97], [52.25, 21.5], [52.35, 21.75], [52.25, 22.0], [52.47, 22.53]]]]}, "2019-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.47, 22.53], [53.0, 22.75], [53.25, 22.65], [53.32, 22.68], [53.35, 22.75], [53.25, 23.0], [53.47, 23.53], [54.0, 23.75], [54.25, 23.65], [54.5, 23.75], [54.75, 23.65], [55.0, 23.75], [55.25, 23.65], [55.32, 23.68], [55.47, 24.03], [55.88, 24.2], [55.75, 24.5], [55.97, 25.03], [56.5, 25.25], [57.03, 25.03], [57.25, 24.5], [57.03, 23.97], [56.63, 23.8], [56.68, 23.68], [56.75, 23.65], [57.0, 23.75], [57.25, 23.65], [57.5, 23.75], [58.03, 23.53], [58.25, 23.0], [58.03, 22.47], [57.68, 22.32], [57.53, 21.97], [57.18, 21.82], [57.15, 21.75], [57.18, 21.68], [57.53, 21.53], [57.75, 21.0], [57.53, 20.47], [57.18, 20.32], [57.15, 20.25], [57.25, 20.0], [57.03, 19.47], [56.5, 19.25], [55.97, 19.47], [55.75, 20.0], [55.85, 20.25], [55.75, 20.5], [55.85, 20.75], [55.82, 20.82], [55.75, 20.85], [55.68, 20.82], [55.53, 20.47], [55.0, 20.25], [54.75, 20.35], [54.5, 20.25], [54.25, 20.35], [54.0, 20.25], [53.47, 20.47], [53.32, 20.82], [53.25, 20.85], [53.0, 20.75], [52.47, 20.97], [52.25, 21.5], [52.35, 21.75], [52.25, 22.0], [52.47, 22.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.188215896883776}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.717092546737989}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.569661635207353, 21.030604381997705, 21.93285458706407, 22.81771475236559, 22.58681334078608, 22.120871058671923, 22.712478526203427]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.74694442507655, 18.26345849169428, 18.956907675912987, 19.120236549705112, 19.264578124405716, 19.61828801049529, 20.102686396687602]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.284706005243239, -3.6079641623537517, -2.844905417708544, -2.438186199566951, -2.5554884335813903, -2.889943368755205, -2.395733328989355]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.588105128613222, -5.188215896883776, -4.28511625477654, -3.947871410610446, -3.687034450986289, -3.732589808429452, -3.4597482976406013]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.204305389166418, -2.3193786530732, -1.8425228358947383, -1.6895212424476884, -1.822578789690013, -2.131695124689461, -1.8623156812575263]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.14917762672177, -2.736918568839771, -2.2799220343825577, -2.28873602365529, -2.5563799567793257, -2.760587736613366, -2.497394223672131]}}