{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:19.818383", "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": "2010-Dec-15_to_2010-Dec-18_52.5_18.0"}, "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": 2010120000764}, "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": "December 15 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 18 2010"}, "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": 105477.60947351642}, "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", "Yemen"]}, "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": 18.0}, "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": 52.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "52.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 47.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 52.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.25, 20.0], [47.47, 20.53], [47.82, 20.68], [47.97, 21.03], [48.5, 21.25], [49.03, 21.03], [49.25, 20.5], [49.04, 20.0], [49.18, 19.68], [49.25, 19.65], [49.32, 19.68], [49.47, 20.03], [50.0, 20.25], [50.25, 20.15], [50.5, 20.25], [51.03, 20.03], [51.18, 19.68], [51.25, 19.65], [51.5, 19.75], [52.03, 19.53], [52.18, 19.18], [52.25, 19.15], [52.5, 19.25], [53.03, 19.03], [53.25, 18.5], [53.15, 18.25], [53.25, 18.0], [53.03, 17.47], [52.5, 17.25], [52.25, 17.35], [52.0, 17.25], [51.75, 17.35], [51.5, 17.25], [51.0, 17.46], [50.5, 17.25], [49.97, 17.47], [49.82, 17.82], [49.75, 17.85], [49.5, 17.75], [48.97, 17.97], [48.82, 18.32], [48.47, 18.47], [48.32, 18.82], [47.97, 18.97], [47.82, 19.32], [47.47, 19.47], [47.25, 20.0]]]]}, "2010-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.85, 17.75], [46.75, 18.0], [46.85, 18.25], [46.75, 18.5], [46.97, 19.03], [47.32, 19.18], [47.46, 19.5], [47.25, 20.0], [47.47, 20.53], [47.82, 20.68], [47.97, 21.03], [48.5, 21.25], [49.03, 21.03], [49.25, 20.5], [49.04, 20.0], [49.18, 19.68], [49.25, 19.65], [49.32, 19.68], [49.47, 20.03], [50.0, 20.25], [50.25, 20.15], [50.5, 20.25], [51.03, 20.03], [51.18, 19.68], [51.25, 19.65], [51.5, 19.75], [52.03, 19.53], [52.18, 19.18], [52.25, 19.15], [52.5, 19.25], [53.03, 19.03], [53.25, 18.5], [53.15, 18.25], [53.25, 18.0], [53.03, 17.47], [52.5, 17.25], [52.25, 17.35], [52.0, 17.25], [51.75, 17.35], [51.5, 17.25], [51.0, 17.46], [50.5, 17.25], [50.0, 17.46], [49.5, 17.25], [49.25, 17.35], [49.0, 17.25], [48.75, 17.35], [48.68, 17.32], [48.53, 16.97], [48.18, 16.82], [48.03, 16.47], [47.5, 16.25], [46.97, 16.47], [46.75, 17.0], [46.85, 17.25], [46.75, 17.5], [46.85, 17.75]]]]}, "2010-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.85, 17.75], [46.75, 18.0], [46.85, 18.25], [46.75, 18.5], [46.97, 19.03], [47.32, 19.18], [47.46, 19.5], [47.25, 20.0], [47.47, 20.53], [47.82, 20.68], [47.97, 21.03], [48.5, 21.25], [49.03, 21.03], [49.25, 20.5], [49.04, 20.0], [49.18, 19.68], [49.25, 19.65], [49.32, 19.68], [49.47, 20.03], [50.0, 20.25], [50.25, 20.15], [50.5, 20.25], [51.03, 20.03], [51.18, 19.68], [51.25, 19.65], [51.5, 19.75], [52.03, 19.53], [52.18, 19.18], [52.25, 19.15], [52.5, 19.25], [53.03, 19.03], [53.25, 18.5], [53.15, 18.25], [53.25, 18.0], [53.03, 17.47], [52.5, 17.25], [52.25, 17.35], [52.0, 17.25], [51.75, 17.35], [51.5, 17.25], [51.0, 17.46], [50.5, 17.25], [50.0, 17.46], [49.5, 17.25], [49.25, 17.35], [49.0, 17.25], [48.75, 17.35], [48.68, 17.32], [48.53, 16.97], [48.18, 16.82], [48.03, 16.47], [47.5, 16.25], [46.97, 16.47], [46.75, 17.0], [46.85, 17.25], [46.75, 17.5], [46.85, 17.75]]]]}, "2010-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.85, 17.75], [46.75, 18.0], [46.85, 18.25], [46.75, 18.5], [46.97, 19.03], [47.32, 19.18], [47.47, 19.53], [48.0, 19.75], [48.25, 19.65], [48.5, 19.75], [49.03, 19.53], [49.18, 19.18], [49.53, 19.03], [49.68, 18.68], [50.03, 18.53], [50.25, 18.0], [50.03, 17.47], [49.5, 17.25], [49.25, 17.35], [49.0, 17.25], [48.75, 17.35], [48.68, 17.32], [48.53, 16.97], [48.18, 16.82], [48.03, 16.47], [47.5, 16.25], [46.97, 16.47], [46.75, 17.0], [46.85, 17.25], [46.75, 17.5], [46.85, 17.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.915706813638224}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.506891032575205}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.42077271740112, 14.872339145840328, 14.835852746822184, 15.047141124364828]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.580813750841173, 13.953956886277467, 13.505347745367203, 14.133951477935113]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.6645956250380944, -4.885023374171492, -4.760590008424008, -4.205788999560435]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.354560827005287, -5.915706813638224, -5.620504953266902, -4.633711840267779]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3484775969967424, -1.7803839851221785, -1.7466156086849447, -1.4907937486857445]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.567565960240872, -2.429034983987686, -2.0188172591063354, -1.6673278585171145]}}