{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:45.711282", "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": "2025-Jun-01_to_2025-Jun-11_58.0_18.5"}, "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": 2025060000062}, "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": "June 01 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 11 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 11}, "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": 161506.07456711185}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "Arabian-Sea", "S.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": ["Arabian Sea", "Gulf of Oman"]}, "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": 18.5}, "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": 58.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "58.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 56.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 61.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.75}, "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": {"2025-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.5, 19.25], [57.75, 19.15], [58.0, 19.25], [58.53, 19.03], [58.75, 18.5], [58.53, 17.97], [58.0, 17.75], [57.75, 17.85], [57.68, 17.82], [57.53, 17.47], [57.0, 17.25], [56.47, 17.47], [56.25, 18.0], [56.47, 18.53], [56.82, 18.68], [56.97, 19.03], [57.5, 19.25]]]]}, "2025-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.0, 19.25], [57.25, 19.15], [57.5, 19.25], [57.75, 19.15], [57.88, 19.2], [57.75, 19.5], [57.97, 20.03], [58.5, 20.25], [58.75, 20.15], [59.0, 20.25], [59.53, 20.03], [59.75, 19.5], [59.53, 18.97], [59.0, 18.75], [58.75, 18.85], [58.63, 18.8], [58.75, 18.5], [58.53, 17.97], [58.18, 17.82], [58.03, 17.47], [57.5, 17.25], [57.25, 17.35], [57.0, 17.25], [56.75, 17.35], [56.5, 17.25], [55.97, 17.47], [55.75, 18.0], [55.97, 18.53], [56.32, 18.68], [56.47, 19.03], [57.0, 19.25]]]]}, "2025-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.0, 19.25], [57.25, 19.15], [57.32, 19.18], [57.47, 19.53], [57.82, 19.68], [57.85, 19.75], [57.75, 20.0], [57.97, 20.53], [58.5, 20.75], [58.75, 20.65], [59.0, 20.75], [59.25, 20.65], [59.5, 20.75], [60.03, 20.53], [60.25, 20.0], [60.15, 19.75], [60.25, 19.5], [60.03, 18.97], [59.5, 18.75], [59.25, 18.85], [59.0, 18.75], [58.75, 18.85], [58.68, 18.82], [58.65, 18.75], [58.75, 18.5], [58.53, 17.97], [58.18, 17.82], [58.03, 17.47], [57.5, 17.25], [57.25, 17.35], [57.0, 17.25], [56.75, 17.35], [56.5, 17.25], [55.97, 17.47], [55.75, 18.0], [55.97, 18.53], [56.32, 18.68], [56.47, 19.03], [57.0, 19.25]]]]}, "2025-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.0, 19.25], [57.25, 19.15], [57.32, 19.18], [57.35, 19.25], [57.25, 19.5], [57.47, 20.03], [57.82, 20.18], [57.97, 20.53], [58.32, 20.68], [58.47, 21.03], [59.0, 21.25], [59.25, 21.15], [59.5, 21.25], [60.03, 21.03], [60.25, 20.5], [60.15, 20.25], [60.25, 20.0], [60.15, 19.75], [60.25, 19.5], [60.03, 18.97], [59.68, 18.82], [59.53, 18.47], [59.18, 18.32], [59.03, 17.97], [58.68, 17.82], [58.53, 17.47], [58.0, 17.25], [57.75, 17.35], [57.5, 17.25], [57.25, 17.35], [57.0, 17.25], [56.75, 17.35], [56.5, 17.25], [55.97, 17.47], [55.75, 18.0], [55.97, 18.53], [56.32, 18.68], [56.47, 19.03], [57.0, 19.25]]]]}, "2025-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.0, 19.25], [57.25, 19.15], [57.32, 19.18], [57.35, 19.25], [57.25, 19.5], [57.35, 19.75], [57.25, 20.0], [57.47, 20.53], [58.0, 20.75], [58.25, 20.65], [58.32, 20.68], [58.35, 20.75], [58.25, 21.0], [58.47, 21.53], [58.82, 21.68], [58.85, 21.75], [58.75, 22.0], [58.97, 22.53], [59.5, 22.75], [59.75, 22.65], [60.0, 22.75], [60.53, 22.53], [60.75, 22.0], [60.53, 21.47], [60.18, 21.32], [60.15, 21.25], [60.25, 21.0], [60.15, 20.75], [60.25, 20.5], [60.15, 20.25], [60.25, 20.0], [60.15, 19.75], [60.25, 19.5], [60.03, 18.97], [59.68, 18.82], [59.65, 18.75], [59.75, 18.5], [59.53, 17.97], [59.18, 17.82], [59.03, 17.47], [58.5, 17.25], [58.25, 17.35], [58.0, 17.25], [57.75, 17.35], [57.5, 17.25], [57.25, 17.35], [57.0, 17.25], [56.75, 17.35], [56.5, 17.25], [55.97, 17.47], [55.75, 18.0], [55.97, 18.53], [56.32, 18.68], [56.47, 19.03], [57.0, 19.25]]]]}, "2025-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.25, 19.0], [56.35, 19.25], [56.25, 19.5], [56.47, 20.03], [57.0, 20.25], [57.3, 20.13], [57.35, 20.25], [57.25, 20.5], [57.35, 20.75], [57.25, 21.0], [57.47, 21.53], [57.82, 21.68], [57.85, 21.75], [57.75, 22.0], [57.85, 22.25], [57.75, 22.5], [57.97, 23.03], [58.5, 23.25], [59.03, 23.03], [59.18, 22.68], [59.25, 22.65], [59.32, 22.68], [59.35, 22.75], [59.25, 23.0], [59.35, 23.25], [59.25, 23.5], [59.35, 23.75], [59.25, 24.0], [59.47, 24.53], [60.0, 24.75], [60.25, 24.65], [60.5, 24.75], [61.03, 24.53], [61.25, 24.0], [61.15, 23.75], [61.25, 23.5], [61.15, 23.25], [61.25, 23.0], [61.03, 22.47], [60.68, 22.32], [60.65, 22.25], [60.75, 22.0], [60.53, 21.47], [60.18, 21.32], [60.15, 21.25], [60.25, 21.0], [60.15, 20.75], [60.25, 20.5], [60.15, 20.25], [60.25, 20.0], [60.15, 19.75], [60.25, 19.5], [60.03, 18.97], [59.68, 18.82], [59.65, 18.75], [59.75, 18.5], [59.53, 17.97], [59.18, 17.82], [59.03, 17.47], [58.5, 17.25], [58.25, 17.35], [58.0, 17.25], [57.75, 17.35], [57.5, 17.25], [57.25, 17.35], [57.0, 17.25], [56.75, 17.35], [56.5, 17.25], [55.97, 17.47], [55.75, 18.0], [55.97, 18.53], [56.32, 18.68], [56.35, 18.75], [56.25, 19.0]]]]}, "2025-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.25, 19.0], [56.35, 19.25], [56.25, 19.5], [56.47, 20.03], [57.0, 20.25], [57.3, 20.13], [57.35, 20.25], [57.25, 20.5], [57.35, 20.75], [57.32, 20.82], [56.97, 20.97], [56.75, 21.5], [56.85, 21.75], [56.75, 22.0], [56.85, 22.25], [56.75, 22.5], [56.97, 23.03], [57.5, 23.25], [57.75, 23.15], [58.0, 23.25], [58.25, 23.15], [58.5, 23.25], [59.03, 23.03], [59.18, 22.68], [59.25, 22.65], [59.32, 22.68], [59.35, 22.75], [59.25, 23.0], [59.35, 23.25], [59.25, 23.5], [59.35, 23.75], [59.25, 24.0], [59.47, 24.53], [59.82, 24.68], [59.97, 25.03], [60.32, 25.18], [60.47, 25.53], [61.0, 25.75], [61.53, 25.53], [61.68, 25.18], [62.03, 25.03], [62.25, 24.5], [62.03, 23.97], [61.68, 23.82], [61.53, 23.47], [61.18, 23.32], [61.15, 23.25], [61.25, 23.0], [61.03, 22.47], [60.68, 22.32], [60.65, 22.25], [60.75, 22.0], [60.53, 21.47], [60.18, 21.32], [60.15, 21.25], [60.25, 21.0], [60.15, 20.75], [60.25, 20.5], [60.15, 20.25], [60.25, 20.0], [60.15, 19.75], [60.25, 19.5], [60.03, 18.97], [59.68, 18.82], [59.65, 18.75], [59.75, 18.5], [59.53, 17.97], [59.18, 17.82], [59.03, 17.47], [58.5, 17.25], [58.25, 17.35], [58.0, 17.25], [57.75, 17.35], [57.5, 17.25], [57.25, 17.35], [57.0, 17.25], [56.75, 17.35], [56.5, 17.25], [55.97, 17.47], [55.75, 18.0], [55.97, 18.53], [56.32, 18.68], [56.35, 18.75], [56.25, 19.0]]]]}, "2025-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.47, 20.03], [57.0, 20.25], [57.3, 20.13], [57.35, 20.25], [57.25, 20.5], [57.35, 20.75], [57.32, 20.82], [56.97, 20.97], [56.75, 21.5], [56.85, 21.75], [56.75, 22.0], [56.85, 22.25], [56.75, 22.5], [56.97, 23.03], [57.5, 23.25], [57.75, 23.15], [58.0, 23.25], [58.25, 23.15], [58.5, 23.25], [59.03, 23.03], [59.18, 22.68], [59.25, 22.65], [59.32, 22.68], [59.35, 22.75], [59.25, 23.0], [59.35, 23.25], [59.25, 23.5], [59.35, 23.75], [59.25, 24.0], [59.47, 24.53], [59.82, 24.68], [59.97, 25.03], [60.32, 25.18], [60.47, 25.53], [61.0, 25.75], [61.53, 25.53], [61.68, 25.18], [62.03, 25.03], [62.25, 24.5], [62.03, 23.97], [61.68, 23.82], [61.53, 23.47], [61.18, 23.32], [61.15, 23.25], [61.25, 23.0], [61.03, 22.47], [60.68, 22.32], [60.65, 22.25], [60.75, 22.0], [60.53, 21.47], [60.18, 21.32], [60.03, 20.97], [59.68, 20.82], [59.53, 20.47], [59.18, 20.32], [59.03, 19.97], [58.68, 19.82], [58.53, 19.47], [58.0, 19.25], [57.7, 19.38], [57.65, 19.25], [57.75, 19.0], [57.53, 18.47], [57.13, 18.3], [57.25, 18.0], [57.03, 17.47], [56.5, 17.25], [55.97, 17.47], [55.75, 18.0], [55.97, 18.53], [56.38, 18.7], [56.25, 19.0], [56.35, 19.25], [56.25, 19.5], [56.47, 20.03]]]]}, "2025-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.85, 22.25], [56.75, 22.5], [56.97, 23.03], [57.5, 23.25], [57.75, 23.15], [58.0, 23.25], [58.53, 23.03], [58.68, 22.68], [59.0, 22.54], [59.32, 22.68], [59.35, 22.75], [59.25, 23.0], [59.35, 23.25], [59.25, 23.5], [59.35, 23.75], [59.25, 24.0], [59.47, 24.53], [59.82, 24.68], [59.97, 25.03], [60.32, 25.18], [60.47, 25.53], [61.0, 25.75], [61.53, 25.53], [61.68, 25.18], [62.03, 25.03], [62.25, 24.5], [62.03, 23.97], [61.68, 23.82], [61.53, 23.47], [61.18, 23.32], [61.15, 23.25], [61.25, 23.0], [61.03, 22.47], [60.68, 22.32], [60.65, 22.25], [60.75, 22.0], [60.53, 21.47], [60.18, 21.32], [60.03, 20.97], [59.68, 20.82], [59.53, 20.47], [59.0, 20.25], [58.75, 20.35], [58.68, 20.32], [58.65, 20.25], [58.75, 20.0], [58.53, 19.47], [58.0, 19.25], [57.7, 19.38], [57.53, 18.97], [57.0, 18.75], [56.47, 18.97], [56.25, 19.5], [56.47, 20.03], [57.0, 20.25], [57.3, 20.13], [57.35, 20.25], [57.25, 20.5], [57.35, 20.75], [57.32, 20.82], [56.97, 20.97], [56.75, 21.5], [56.85, 21.75], [56.75, 22.0], [56.85, 22.25]]]]}, "2025-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[59.47, 24.03], [59.82, 24.18], [59.97, 24.53], [60.5, 24.75], [61.03, 24.53], [61.25, 24.0], [61.03, 23.47], [60.68, 23.32], [60.65, 23.25], [60.75, 23.0], [60.54, 22.5], [60.75, 22.0], [60.53, 21.47], [60.0, 21.25], [59.47, 21.47], [59.25, 22.0], [59.46, 22.5], [59.25, 23.0], [59.35, 23.25], [59.25, 23.5], [59.47, 24.03]]]]}, "2025-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[59.47, 24.03], [59.82, 24.18], [59.97, 24.53], [60.5, 24.75], [61.03, 24.53], [61.25, 24.0], [61.03, 23.47], [60.68, 23.32], [60.65, 23.25], [60.75, 23.0], [60.54, 22.5], [60.75, 22.0], [60.53, 21.47], [60.0, 21.25], [59.47, 21.47], [59.25, 22.0], [59.46, 22.5], [59.25, 23.0], [59.35, 23.25], [59.25, 23.5], [59.47, 24.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.115357142574567}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7672910553731966}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.151284790039085, 26.96918131510421, 27.082921991592855, 27.096993617007627, 27.0594443521382, 27.859533267551, 28.30923582134824, 29.168391164143884, 29.517939758300827, 27.983239746093773, 28.05333735148116]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.93855692545577, 26.457045491536462, 26.49082463582357, 26.432644144694052, 25.986603037516318, 25.887522633870446, 25.986439005533896, 26.295669809977255, 26.75762074788412, 27.277246093750023, 27.18712641398116]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0945182248311955, -1.2410209353576747, -1.1837489212147148, -1.2003226243715637, -1.3993897495438117, -1.7647262180288483, -1.999527802784865, -2.278397440177069, -1.984022656370242, -1.4821343497782067, -1.4204446902286634]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1694830116746289, -1.5183064991758783, -1.4974993168792707, -1.516256278525816, -2.160886348804695, -3.2557648736149076, -4.115357142574567, -3.7885828188333903, -3.159910436445614, -1.9137365558025294, -1.6934167406014922]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6837932146259567, -1.8619445071342038, -1.7943685727665297, -1.82301084926513, -1.9740696722051354, -1.7906942488548279, -1.7219179399405393, -1.5645489801065107, -1.3617173133310392, -1.4715203439436635, -1.411933717353572]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7508856233050623, -2.2701823917057338, -2.485769750309459, -2.291702487001133, -2.816798401536146, -2.36954920384969, -2.184190573031001, -2.105142510214957, -1.9897050032972567, -1.8257784642331394, -1.558185583744102]}}