{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:44.272700", "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": "2016-Feb-19_to_2016-Feb-21_43.0_4.0"}, "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": 2016020000527}, "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": "February 19 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 21 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 80098.77624597374}, "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": ["Ethiopia", "Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 4.0}, "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": 43.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "43.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.97, 5.03], [42.32, 5.18], [42.47, 5.53], [43.0, 5.75], [43.25, 5.65], [43.32, 5.68], [43.47, 6.03], [44.0, 6.25], [44.25, 6.15], [44.32, 6.18], [44.47, 6.53], [45.0, 6.75], [45.25, 6.65], [45.5, 6.75], [46.03, 6.53], [46.25, 6.0], [46.15, 5.75], [46.25, 5.5], [46.03, 4.97], [45.68, 4.82], [45.65, 4.75], [45.75, 4.5], [45.65, 4.25], [45.75, 4.0], [45.53, 3.47], [45.18, 3.32], [45.03, 2.97], [44.5, 2.75], [44.25, 2.85], [44.0, 2.75], [43.75, 2.85], [43.5, 2.75], [42.97, 2.97], [42.82, 3.32], [42.75, 3.35], [42.5, 3.25], [41.97, 3.47], [41.75, 4.0], [41.85, 4.25], [41.75, 4.5], [41.97, 5.03]]]]}, "2016-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.97, 5.03], [42.32, 5.18], [42.47, 5.53], [43.0, 5.75], [43.25, 5.65], [43.32, 5.68], [43.47, 6.03], [44.0, 6.25], [44.25, 6.15], [44.32, 6.18], [44.47, 6.53], [45.0, 6.75], [45.25, 6.65], [45.5, 6.75], [46.03, 6.53], [46.25, 6.0], [46.15, 5.75], [46.25, 5.5], [46.03, 4.97], [45.68, 4.82], [45.65, 4.75], [45.75, 4.5], [45.65, 4.25], [45.75, 4.0], [45.53, 3.47], [45.18, 3.32], [45.03, 2.97], [44.5, 2.75], [44.25, 2.85], [44.0, 2.75], [43.75, 2.85], [43.5, 2.75], [42.97, 2.97], [42.82, 3.32], [42.75, 3.35], [42.5, 3.25], [41.97, 3.47], [41.75, 4.0], [41.85, 4.25], [41.75, 4.5], [41.97, 5.03]]]]}, "2016-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.97, 5.03], [42.32, 5.18], [42.47, 5.53], [43.0, 5.75], [43.25, 5.65], [43.32, 5.68], [43.47, 6.03], [44.0, 6.25], [44.25, 6.15], [44.32, 6.18], [44.47, 6.53], [45.0, 6.75], [45.25, 6.65], [45.5, 6.75], [46.03, 6.53], [46.25, 6.0], [46.15, 5.75], [46.25, 5.5], [46.03, 4.97], [45.68, 4.82], [45.65, 4.75], [45.75, 4.5], [45.65, 4.25], [45.75, 4.0], [45.53, 3.47], [45.18, 3.32], [45.03, 2.97], [44.5, 2.75], [44.25, 2.85], [44.0, 2.75], [43.75, 2.85], [43.5, 2.75], [42.97, 2.97], [42.82, 3.32], [42.75, 3.35], [42.5, 3.25], [41.97, 3.47], [41.75, 4.0], [41.85, 4.25], [41.75, 4.5], [41.97, 5.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.364927803729927}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.984111592674818}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.34792450036616, 26.04236287735978, 26.767661230941997]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.33041553726372, 24.037997478655996, 24.895791771560653]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2865542333373325, -2.658253031658894, -2.0075275130282275]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5700601221162174, -3.364927803729927, -2.915689445989301]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5599410926814121, -3.185242443006407, -2.3715937918271424]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.866582870081576, -4.0287626377350065, -3.352742099846568]}}