{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:21.305565", "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": "2011-May-01_to_2011-May-05_42.5_15.0"}, "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": 2011050000120}, "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 01 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 05 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 68945.89076728572}, "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": ["Eritrea", "Ethiopia", "Yemen"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "N.Eastern-Africa", "Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": ["Red Sea"]}, "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": 15.0}, "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": 42.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.97, 15.53], [39.5, 15.75], [39.75, 15.65], [40.0, 15.75], 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12.88], [43.03, 12.47], [42.5, 12.25], [42.25, 12.35], [42.0, 12.25], [41.47, 12.47], [41.32, 12.82], [41.0, 12.96], [40.5, 12.75], [39.97, 12.97], [39.75, 13.5], [39.85, 13.75], [39.82, 13.82], [39.47, 13.97], [39.32, 14.32], [38.97, 14.47], [38.75, 15.0]]]]}, "2011-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 15.53], [40.5, 15.75], [41.03, 15.53], [41.25, 15.0], [41.47, 15.53], [42.0, 15.75], [42.25, 15.65], [42.5, 15.75], [43.03, 15.53], [43.25, 15.0], [43.15, 14.75], [43.18, 14.68], [43.53, 14.53], [43.68, 14.18], [43.75, 14.15], [44.0, 14.25], [44.53, 14.03], [44.75, 13.5], [44.53, 12.97], [44.0, 12.75], [43.75, 12.85], [43.5, 12.75], [43.0, 12.96], [42.5, 12.75], [42.25, 12.85], [42.0, 12.75], [41.47, 12.97], [41.32, 13.32], [40.97, 13.47], [40.8, 13.88], [40.5, 13.75], [39.97, 13.97], [39.75, 14.5], [39.85, 14.75], [39.75, 15.0], [39.97, 15.53]], [[41.15, 14.75], [41.2, 14.63], [41.32, 14.68], [41.35, 14.75], [41.25, 15.0], [41.15, 14.75]]]]}, "2011-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, 12.97], [43.25, 13.5], [43.47, 14.03], [44.0, 14.25], [44.53, 14.03], [44.75, 13.5], [44.53, 12.97], [44.0, 12.75], [43.47, 12.97]]], [[[41.97, 14.47], [41.75, 15.0], [41.97, 15.53], [42.5, 15.75], [43.03, 15.53], [43.25, 15.0], [43.03, 14.47], [42.5, 14.25], [41.97, 14.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.879037296337117}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.214636651822792}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.145016538729806, 27.98343898994227, 27.723352833505146, 28.18193144045921, 25.41759549147247]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.77885506321985, 18.063352362535568, 17.272242466359558, 22.997077355728266, 22.712982002300066]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.474629455448081, -2.2798253344920765, -2.374103109529768, -1.5818825441566844, -1.640271899450056]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3020893711369013, -3.879037296337117, -3.674883287236014, -2.849697136938005, -2.2632975368844086]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5841126279430047, -1.797406513421722, -1.8780758315340993, -1.4678337378721966, -1.5617045559123528]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8930051494501152, -2.636526730036719, -2.5556959145501197, -1.7700570971478868, -1.6009472878086628]}}