{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:51.398671", "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-Nov-17_to_2011-Nov-20_285.5_-7.0"}, "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": 2011110000863}, "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": "November 17 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 20 2011"}, "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": 67530.69812305806}, "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": ["Brazil", "Peru"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": -7.0}, "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": 285.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "285.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 284.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 287.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.15, -5.75], [-76.25, -5.5], [-76.03, -4.97], [-75.5, -4.75], [-75.25, -4.85], [-75.0, -4.75], [-74.75, -4.85], [-74.5, -4.75], [-73.97, -4.97], [-73.82, -5.32], [-73.47, -5.47], [-73.25, -6.0], [-73.35, -6.25], [-73.25, -6.5], [-73.35, -6.75], [-73.25, -7.0], [-73.47, -7.53], [-74.0, -7.75], [-74.25, -7.65], [-74.5, -7.75], [-75.03, -7.53], [-75.18, -7.18], [-75.25, -7.15], [-75.5, -7.25], [-76.03, -7.03], [-76.25, -6.5], [-76.15, -6.25], [-76.25, -6.0], [-76.15, -5.75]]]]}, "2011-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.15, -5.75], [-76.25, -5.5], [-76.03, -4.97], [-75.5, -4.75], [-75.25, -4.85], [-75.0, -4.75], [-74.75, -4.85], [-74.5, -4.75], [-74.25, -4.85], [-74.0, -4.75], [-73.47, -4.97], [-73.32, -5.32], [-73.25, -5.35], [-73.0, -5.25], [-72.47, -5.47], [-72.25, -6.0], [-72.47, -6.53], [-73.0, -6.75], [-73.25, -6.65], [-73.32, -6.68], [-73.35, -6.75], [-73.25, -7.0], [-73.35, -7.25], [-73.32, -7.32], [-72.97, -7.47], [-72.82, -7.82], [-72.47, -7.97], [-72.25, -8.5], [-72.47, -9.03], [-73.0, -9.25], [-73.25, -9.15], [-73.32, -9.18], [-73.47, -9.53], [-74.0, -9.75], [-74.53, -9.53], [-74.75, -9.0], [-74.53, -8.47], [-74.18, -8.32], [-74.15, -8.25], [-74.18, -8.18], [-74.25, -8.15], [-74.5, -8.25], [-75.03, -8.03], [-75.25, -7.5], [-75.15, -7.25], [-75.18, -7.18], [-75.25, -7.15], [-75.5, -7.25], [-76.03, -7.03], [-76.25, -6.5], [-76.15, -6.25], [-76.25, -6.0], [-76.15, -5.75]]]]}, "2011-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.15, -5.75], [-76.25, -5.5], [-76.03, -4.97], [-75.5, -4.75], [-75.25, -4.85], [-75.0, -4.75], [-74.75, -4.85], [-74.5, -4.75], [-74.25, -4.85], [-74.0, -4.75], [-73.47, -4.97], [-73.32, -5.32], [-73.25, -5.35], [-73.0, -5.25], [-72.47, -5.47], [-72.25, -6.0], [-72.47, -6.53], [-73.0, -6.75], [-73.25, -6.65], [-73.32, -6.68], [-73.35, -6.75], [-73.25, -7.0], [-73.35, -7.25], [-73.32, -7.32], [-72.97, -7.47], [-72.82, -7.82], [-72.47, -7.97], [-72.25, -8.5], [-72.47, -9.03], [-73.0, -9.25], [-73.25, -9.15], [-73.32, -9.18], [-73.47, -9.53], [-74.0, -9.75], [-74.53, -9.53], [-74.75, -9.0], [-74.53, -8.47], [-74.18, -8.32], [-74.15, -8.25], [-74.18, -8.18], [-74.25, -8.15], [-74.5, -8.25], [-75.03, -8.03], [-75.25, -7.5], [-75.15, -7.25], [-75.18, -7.18], [-75.25, -7.15], [-75.5, -7.25], [-76.03, -7.03], [-76.25, -6.5], [-76.15, -6.25], [-76.25, -6.0], [-76.15, -5.75]]]]}, "2011-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.03, -4.97], [-75.5, -4.75], [-75.25, -4.85], [-75.0, -4.75], [-74.75, -4.85], [-74.5, -4.75], [-74.25, -4.85], [-74.0, -4.75], [-73.47, -4.97], [-73.32, -5.32], [-73.25, -5.35], [-73.0, -5.25], [-72.47, -5.47], [-72.25, -6.0], [-72.47, -6.53], [-73.0, -6.75], [-73.25, -6.65], [-73.37, -6.7], [-73.25, -7.0], [-73.35, -7.25], [-73.32, -7.32], [-72.97, -7.47], [-72.82, -7.82], [-72.47, -7.97], [-72.25, -8.5], [-72.47, -9.03], [-73.0, -9.25], [-73.25, -9.15], [-73.32, -9.18], [-73.47, -9.53], [-74.0, -9.75], [-74.53, -9.53], [-74.75, -9.0], [-74.53, -8.47], [-74.18, -8.32], [-74.15, -8.25], [-74.18, -8.18], [-74.25, -8.15], [-74.5, -8.25], [-75.03, -8.03], [-75.25, -7.5], [-75.15, -7.25], [-75.25, -7.0], [-75.15, -6.75], [-75.2, -6.62], [-75.5, -6.75], [-76.03, -6.53], [-76.25, -6.0], [-76.15, -5.75], [-76.25, -5.5], [-76.03, -4.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9191129326999317}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0457308757902632}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.503376714418835, 24.19783331255877, 23.854869120315755, 24.18322010923947]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.939002977733992, 23.449981174109382, 22.81393320730359, 23.531151868365725]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9493723065753907, -2.0025327550200753, -2.3007948601735135, -1.845237487572968]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.157269708108629, -2.5649121867146505, -2.9191129326999317, -2.2877504994083893]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.555869695804451, -1.607872165307134, -1.9117540235755195, -1.5762314110366056]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6767516998060834, -2.011072560228857, -2.3458698048059974, -1.8213955651491045]}}