{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:17.643164", "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": "2015-Feb-13_to_2015-Feb-16_44.5_10.5"}, "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": 2015020000571}, "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 13 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 16 2015"}, "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": 81687.21975999656}, "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": ["Djibouti", "Somalia", "Yemen"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "N.Eastern-Africa"]}, "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": ["Gulf of Aden", "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": 10.5}, "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": 44.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 46.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 13.53], [43.0, 13.75], [43.25, 13.65], [43.5, 13.75], 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10.75], [46.25, 10.5], [46.03, 9.97], [45.5, 9.75], [45.25, 9.85], [45.0, 9.75], [44.75, 9.85], [44.5, 9.75], [44.25, 9.85], [44.0, 9.75], [43.47, 9.97], [43.32, 10.32], [42.97, 10.47], [42.75, 11.0], [42.85, 11.25], [42.75, 11.5], [42.85, 11.75], [42.82, 11.82], [42.47, 11.97], [42.25, 12.5], [42.35, 12.75], [42.25, 13.0], [42.47, 13.53]]]]}, "2015-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 13.53], [43.0, 13.75], [43.25, 13.65], [43.5, 13.75], [44.03, 13.53], [44.18, 13.18], [44.25, 13.15], [44.32, 13.18], [44.47, 13.53], [45.0, 13.75], [45.25, 13.65], [45.5, 13.75], [45.75, 13.65], [46.0, 13.75], [46.53, 13.53], [46.75, 13.0], [46.53, 12.47], [46.13, 12.3], [46.25, 12.0], [46.04, 11.5], [46.25, 11.0], [46.15, 10.75], [46.25, 10.5], [46.03, 9.97], [45.5, 9.75], [45.25, 9.85], [45.0, 9.75], [44.75, 9.85], [44.5, 9.75], [44.25, 9.85], [44.0, 9.75], [43.47, 9.97], [43.32, 10.32], [42.97, 10.47], [42.75, 11.0], [42.85, 11.25], [42.75, 11.5], [42.85, 11.75], [42.82, 11.82], [42.47, 11.97], [42.25, 12.5], [42.35, 12.75], [42.25, 13.0], [42.47, 13.53]]]]}, "2015-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 13.53], [43.0, 13.75], [43.53, 13.53], [43.68, 13.18], [43.75, 13.15], [44.0, 13.25], [44.25, 13.15], [44.32, 13.18], [44.47, 13.53], [45.0, 13.75], [45.25, 13.65], [45.5, 13.75], [45.75, 13.65], [46.0, 13.75], [46.53, 13.53], [46.75, 13.0], [46.53, 12.47], [46.13, 12.3], [46.25, 12.0], [46.03, 11.47], [45.5, 11.25], [45.25, 11.35], [45.0, 11.25], [44.75, 11.35], [44.68, 11.32], [44.63, 11.2], [45.03, 11.03], [45.25, 10.5], [45.03, 9.97], [44.5, 9.75], [44.25, 9.85], [44.0, 9.75], [43.47, 9.97], [43.32, 10.32], [42.97, 10.47], [42.75, 11.0], [42.85, 11.25], [42.75, 11.5], [42.85, 11.75], [42.82, 11.82], [42.47, 11.97], [42.25, 12.5], [42.35, 12.75], [42.25, 13.0], [42.47, 13.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.098212799221699}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.8682948697184555}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.968901027256265, 23.70537531536462, 23.99104042499954, 23.97944842156312]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.801949439991517, 22.33567419454897, 22.904166991534623, 23.028614925932402]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.78645635816202, -1.0528721394147358, -0.7987033378819108, -0.8094808623127897]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4070745545088812, -2.098212799221699, -1.6283507424753907, -1.280644293768887]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5937243238261625, -2.1281870748875176, -1.5445565830863228, -1.5548156147587058]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9180600986390017, -3.1283390280302523, -2.1636364634742065, -1.9386683872173767]}}