{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:57.891535", "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-Jul-28_to_2011-Jul-30_65.0_-50.0"}, "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": 2011070001484}, "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": "July 28 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 30 2011"}, "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": 100221.1281431328}, "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": ["French Southern Territories"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean"]}, "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": ["Indian Ocean"]}, "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": -50.0}, "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": 65.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "65.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 62.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 72.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -51.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -47.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[62.25, -50.5], [62.47, -49.97], [63.0, -49.75], [63.25, -49.85], [63.32, -49.82], [63.47, -49.47], [64.0, -49.25], [64.25, -49.35], [64.32, -49.32], [64.47, -48.97], [65.0, -48.75], [65.25, -48.85], [65.5, -48.75], [65.75, -48.85], [66.0, -48.75], [66.25, -48.85], [66.32, -48.82], [66.47, -48.47], [67.0, -48.25], [67.25, -48.35], [67.5, -48.25], [67.75, -48.35], [68.0, -48.25], [68.25, -48.35], [68.5, -48.25], [68.75, -48.35], [68.82, -48.32], [68.97, -47.97], [69.5, -47.75], [69.75, -47.85], [69.82, -47.82], [69.97, -47.47], [70.5, -47.25], [70.75, -47.35], [71.0, -47.25], [71.25, -47.35], [71.5, -47.25], [71.75, -47.35], [72.0, -47.25], [72.53, -47.47], [72.75, -48.0], [72.53, -48.53], [72.0, -48.75], [71.75, -48.65], [71.68, -48.68], [71.65, -48.75], [71.68, -48.82], [72.03, -48.97], [72.25, -49.5], [72.03, -50.03], [71.5, -50.25], [71.0, -50.04], [70.68, -50.18], [70.53, -50.53], [70.0, -50.75], [69.75, -50.65], [69.5, -50.75], [69.25, -50.65], [69.0, -50.75], [68.47, -50.53], [68.32, -50.18], [68.25, -50.15], [68.18, -50.18], [68.03, -50.53], [67.5, -50.75], [67.25, -50.65], [67.18, -50.68], [67.03, -51.03], [66.5, -51.25], [66.25, -51.15], [66.0, -51.25], [65.75, -51.15], [65.5, -51.25], [65.25, -51.15], [65.18, -51.18], [65.03, -51.53], [64.5, -51.75], [64.25, -51.65], [64.0, -51.75], [63.75, -51.65], [63.5, -51.75], [62.97, -51.53], [62.82, -51.18], [62.47, -51.03], [62.25, -50.5]]]]}, "2011-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[62.25, -50.5], [62.47, -49.97], [63.0, -49.75], [63.25, -49.85], [63.32, -49.82], [63.47, -49.47], [64.0, -49.25], [64.25, -49.35], [64.32, -49.32], [64.47, -48.97], [65.0, -48.75], [65.25, -48.85], [65.5, -48.75], [65.75, -48.85], [66.0, -48.75], [66.25, -48.85], [66.32, -48.82], [66.47, -48.47], [67.0, -48.25], [67.25, -48.35], [67.5, -48.25], [67.75, -48.35], [68.0, -48.25], [68.25, -48.35], [68.5, -48.25], [68.75, -48.35], [68.82, -48.32], [68.97, -47.97], [69.5, -47.75], [69.75, -47.85], [69.82, -47.82], [69.97, -47.47], [70.5, -47.25], [70.75, -47.35], [71.0, -47.25], [71.25, -47.35], [71.5, -47.25], [71.75, -47.35], [72.0, -47.25], [72.53, -47.47], [72.75, -48.0], [72.53, -48.53], [72.0, -48.75], [71.75, -48.65], [71.68, -48.68], [71.65, -48.75], [71.68, -48.82], [72.03, -48.97], [72.25, -49.5], [72.03, -50.03], [71.5, -50.25], [71.0, -50.04], [70.68, -50.18], [70.53, -50.53], [70.0, -50.75], [69.75, -50.65], [69.5, -50.75], [69.25, -50.65], [69.0, -50.75], [68.47, -50.53], [68.32, -50.18], [68.25, -50.15], [68.18, -50.18], [68.03, -50.53], [67.5, -50.75], [67.25, -50.65], [67.18, -50.68], [67.03, -51.03], [66.5, -51.25], [66.25, -51.15], [66.0, -51.25], [65.75, -51.15], [65.5, -51.25], [65.25, -51.15], [65.18, -51.18], [65.03, -51.53], [64.5, -51.75], [64.25, -51.65], [64.0, -51.75], [63.75, -51.65], [63.5, -51.75], [62.97, -51.53], [62.82, -51.18], [62.47, -51.03], [62.25, -50.5]]]]}, "2011-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[62.25, -50.5], [62.47, -49.97], [63.0, -49.75], [63.25, -49.85], [63.32, -49.82], [63.47, -49.47], [64.0, -49.25], [64.25, -49.35], [64.32, -49.32], [64.47, -48.97], [65.0, -48.75], [65.25, -48.85], [65.5, -48.75], [65.75, -48.85], [66.0, -48.75], [66.25, -48.85], [66.32, -48.82], [66.47, -48.47], [67.0, -48.25], [67.25, -48.35], [67.5, -48.25], [67.75, -48.35], [68.0, -48.25], [68.25, -48.35], [68.5, -48.25], [68.75, -48.35], [68.82, -48.32], [68.97, -47.97], [69.5, -47.75], [69.75, -47.85], [69.82, -47.82], [69.97, -47.47], [70.5, -47.25], [70.75, -47.35], [71.0, -47.25], [71.25, -47.35], [71.5, -47.25], [71.75, -47.35], [72.0, -47.25], [72.53, -47.47], [72.75, -48.0], [72.53, -48.53], [72.0, -48.75], [71.75, -48.65], [71.68, -48.68], [71.65, -48.75], [71.68, -48.82], [72.03, -48.97], [72.25, -49.5], [72.03, -50.03], [71.5, -50.25], [71.0, -50.04], [70.68, -50.18], [70.53, -50.53], [70.0, -50.75], [69.75, -50.65], [69.5, -50.75], [69.25, -50.65], [69.0, -50.75], [68.47, -50.53], [68.32, -50.18], [68.25, -50.15], [68.18, -50.18], [68.03, -50.53], [67.5, -50.75], [67.25, -50.65], [67.18, -50.68], [67.03, -51.03], [66.5, -51.25], [66.25, -51.15], [66.0, -51.25], [65.75, -51.15], [65.5, -51.25], [65.25, -51.15], [65.18, -51.18], [65.03, -51.53], [64.5, -51.75], [64.25, -51.65], [64.0, -51.75], [63.75, -51.65], [63.5, -51.75], [62.97, -51.53], [62.82, -51.18], [62.47, -51.03], [62.25, -50.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9344591528866886}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0274284997847585}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.06984775852828307, 0.36165737565221434, 0.3652234039562927]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.0264112396462792, -1.9006576864529166, -2.332586973779769]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.304452126558672, -1.900489253982132, -1.8773441188134712]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.723102798820946, -2.7142293844412393, -2.9344591528866886]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7928537339140371, -1.4842817361779073, -1.4166339026248729]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2051257056489857, -1.6576782697495682, -1.6363676292038332]}}