{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:37.425478", "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": "2012-Jun-04_to_2012-Jun-08_165.5_-73.0"}, "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": 2012060000206}, "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": "June 04 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 08 2012"}, "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": 70921.898307122}, "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": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": ["Southern 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": -73.0}, "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": 165.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "165.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 159.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 171.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -77.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -72.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[166.0, -73.75], [166.53, -73.97], [166.75, -74.5], [166.53, -75.03], [166.0, -75.25], [165.47, -75.03], [165.25, -74.5], [165.47, -73.97], [166.0, -73.75]]]]}, "2012-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[158.85, -76.75], [158.75, -76.5], [158.97, -75.97], [159.5, -75.75], [159.75, -75.85], [160.0, -75.75], [160.25, -75.85], [160.32, -75.82], [160.47, -75.47], [160.82, -75.32], [160.85, -75.25], [160.75, -75.0], [160.85, -74.75], [160.75, -74.5], [160.97, -73.97], [161.5, -73.75], [162.0, -73.96], [162.5, -73.75], [163.0, -73.96], [163.38, -73.8], [163.25, -73.5], [163.47, -72.97], [164.0, -72.75], [164.25, -72.85], [164.5, -72.75], [164.75, -72.85], [164.82, -72.82], [164.97, -72.47], [165.5, -72.25], [165.75, -72.35], [166.0, -72.25], [166.25, -72.35], [166.32, -72.32], [166.47, -71.97], [167.0, -71.75], [167.25, -71.85], [167.5, -71.75], [168.03, -71.97], [168.18, -72.32], [168.5, -72.46], [169.0, -72.25], [169.25, -72.35], [169.5, -72.25], [169.75, -72.35], [170.0, -72.25], [170.53, -72.47], [170.75, -73.0], [170.53, -73.53], [170.18, -73.68], [170.13, -73.8], [170.25, -73.85], [170.5, -73.75], [170.75, -73.85], [171.0, -73.75], [171.53, -73.97], [171.75, -74.5], [171.53, -75.03], [171.0, -75.25], [170.75, -75.15], [170.68, -75.18], [170.53, -75.53], [170.0, -75.75], [169.75, -75.65], [169.5, -75.75], [169.25, -75.65], [169.0, -75.75], [168.75, -75.65], [168.5, -75.75], [168.25, -75.65], [168.0, -75.75], [167.75, -75.65], [167.5, -75.75], [167.25, -75.65], [167.0, -75.75], [166.75, -75.65], [166.5, -75.75], [166.25, -75.65], [166.0, -75.75], [165.75, -75.65], [165.5, -75.75], [165.25, -75.65], [165.0, -75.75], [164.75, -75.65], [164.5, -75.75], [164.25, -75.65], [164.0, -75.75], [163.75, -75.65], [163.5, -75.75], [163.25, -75.65], [163.18, -75.68], [163.15, -75.75], [163.25, -76.0], [163.03, -76.53], [162.5, -76.75], [162.25, -76.65], [162.0, -76.75], [161.75, -76.65], [161.68, -76.68], [161.53, -77.03], [161.18, -77.18], [161.03, -77.53], [160.68, -77.68], [160.53, -78.03], [160.0, -78.25], [159.75, -78.15], [159.5, -78.25], [158.97, -78.03], [158.75, -77.5], [158.85, -77.25], [158.75, -77.0], [158.85, -76.75]]]]}, "2012-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[158.85, -76.75], [158.75, -76.5], [158.97, -75.97], [159.5, -75.75], [159.75, -75.85], [160.0, -75.75], [160.25, -75.85], [160.32, -75.82], [160.47, -75.47], [160.82, -75.32], [160.85, -75.25], [160.75, -75.0], [160.85, -74.75], [160.75, -74.5], [160.97, -73.97], [161.5, -73.75], [162.0, -73.96], [162.5, -73.75], [162.75, -73.85], [163.0, -73.75], [163.25, -73.85], [163.38, -73.8], [163.25, -73.5], [163.47, -72.97], [164.0, -72.75], [164.25, -72.85], [164.5, -72.75], [164.75, -72.85], [164.82, -72.82], [164.97, -72.47], [165.32, -72.32], [165.47, -71.97], [166.0, -71.75], [166.25, -71.85], [166.5, -71.75], [166.75, -71.85], [167.0, -71.75], [167.25, -71.85], [167.5, -71.75], [168.03, -71.97], [168.18, -72.32], [168.5, -72.46], [169.0, -72.25], [169.25, -72.35], [169.5, -72.25], [169.75, -72.35], [170.0, -72.25], [170.53, -72.47], [170.75, -73.0], [170.53, -73.53], [170.18, -73.68], [170.13, -73.8], [170.25, -73.85], [170.5, -73.75], [170.75, -73.85], [171.0, -73.75], [171.53, -73.97], [171.75, -74.5], [171.53, -75.03], [171.0, -75.25], [170.75, -75.15], [170.68, -75.18], [170.53, -75.53], [170.0, -75.75], [169.75, -75.65], [169.5, -75.75], [169.25, -75.65], [169.0, -75.75], [168.75, -75.65], [168.5, -75.75], [168.25, -75.65], [168.0, -75.75], [167.75, -75.65], [167.5, -75.75], [167.25, -75.65], [167.0, -75.75], [166.75, -75.65], [166.5, -75.75], [166.25, -75.65], [166.0, -75.75], [165.75, -75.65], [165.5, -75.75], [165.25, -75.65], [165.0, -75.75], [164.75, -75.65], [164.5, -75.75], [164.25, -75.65], [164.0, -75.75], [163.75, -75.65], [163.5, -75.75], [163.25, -75.65], [163.18, -75.68], [163.15, -75.75], [163.25, -76.0], [163.03, -76.53], [162.5, -76.75], [162.25, -76.65], [162.0, -76.75], [161.75, -76.65], [161.68, -76.68], [161.53, -77.03], [161.18, -77.18], [161.03, -77.53], [160.68, -77.68], [160.53, -78.03], [160.0, -78.25], [159.75, -78.15], [159.5, -78.25], [158.97, -78.03], [158.75, -77.5], [158.85, -77.25], [158.75, -77.0], [158.85, -76.75]]]]}, "2012-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[158.85, -76.75], [158.75, -76.5], [158.97, -75.97], [159.5, -75.75], [159.75, -75.85], [160.0, -75.75], [160.25, -75.85], [160.32, -75.82], [160.47, -75.47], [160.82, -75.32], [160.85, -75.25], [160.75, -75.0], [160.85, -74.75], [160.75, -74.5], [160.97, -73.97], [161.5, -73.75], [162.0, -73.96], [162.5, -73.75], [162.75, -73.85], [163.0, -73.75], [163.25, -73.85], [163.38, -73.8], [163.25, -73.5], [163.47, -72.97], [164.0, -72.75], [164.25, -72.85], [164.5, -72.75], [164.75, -72.85], [164.82, -72.82], [164.97, -72.47], [165.32, -72.32], [165.47, -71.97], [166.0, -71.75], [166.25, -71.85], [166.5, -71.75], [166.75, -71.85], [167.0, -71.75], [167.25, -71.85], [167.5, -71.75], [168.03, -71.97], [168.18, -72.32], [168.5, -72.46], [169.0, -72.25], [169.25, -72.35], [169.5, -72.25], [169.75, -72.35], [170.0, -72.25], [170.53, -72.47], [170.75, -73.0], [170.53, -73.53], [170.18, -73.68], [170.13, -73.8], [170.25, -73.85], [170.5, -73.75], [170.75, -73.85], [171.0, -73.75], [171.53, -73.97], [171.75, -74.5], [171.53, -75.03], [171.0, -75.25], [170.75, -75.15], [170.68, -75.18], [170.53, -75.53], [170.0, -75.75], [169.75, -75.65], [169.5, -75.75], [169.25, -75.65], [169.0, -75.75], [168.75, -75.65], [168.5, -75.75], [168.25, -75.65], [168.0, -75.75], [167.75, -75.65], [167.5, -75.75], [167.25, -75.65], [167.0, -75.75], [166.75, -75.65], [166.5, -75.75], [166.25, -75.65], [166.0, -75.75], [165.75, -75.65], [165.5, -75.75], [165.25, -75.65], [165.0, -75.75], [164.75, -75.65], [164.5, -75.75], [164.25, -75.65], [164.0, -75.75], [163.75, -75.65], [163.5, -75.75], [163.25, -75.65], [163.18, -75.68], [163.15, -75.75], [163.25, -76.0], [163.03, -76.53], [162.5, -76.75], [162.25, -76.65], [162.0, -76.75], [161.75, -76.65], [161.68, -76.68], [161.53, -77.03], [161.18, -77.18], [161.03, -77.53], [160.68, -77.68], [160.53, -78.03], [160.0, -78.25], [159.75, -78.15], [159.5, -78.25], [158.97, -78.03], [158.75, -77.5], [158.85, -77.25], [158.75, -77.0], [158.85, -76.75]]]]}, "2012-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[161.75, -74.5], [161.97, -73.97], [162.5, -73.75], [162.75, -73.85], [163.0, -73.75], [163.25, -73.85], [163.5, -73.75], [163.75, -73.85], [164.0, -73.75], [164.25, -73.85], [164.5, -73.75], [164.75, -73.85], [165.0, -73.75], [165.53, -73.97], [165.75, -74.5], [165.53, -75.03], [165.0, -75.25], [164.75, -75.15], [164.5, -75.25], [164.25, -75.15], [164.0, -75.25], [163.75, -75.15], [163.5, -75.25], [163.25, -75.15], [163.0, -75.25], [162.75, -75.15], [162.5, -75.25], [161.97, -75.03], [161.75, -74.5]]], [[[169.25, -73.0], [169.47, -72.47], [170.0, -72.25], [170.53, -72.47], [170.75, -73.0], [170.53, -73.53], [170.0, -73.75], [169.47, -73.53], [169.25, -73.0]]], [[[166.5, -71.75], [166.75, -71.85], [167.0, -71.75], [167.53, -71.97], [167.75, -72.5], [167.53, -73.03], [167.0, -73.25], [166.75, -73.15], [166.5, -73.25], [166.25, -73.15], [166.18, -73.18], [166.03, -73.53], [165.5, -73.75], [164.97, -73.53], [164.75, -73.0], [164.97, -72.47], [165.32, -72.32], [165.47, -71.97], [166.0, -71.75], [166.25, -71.85], [166.5, -71.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -15.481129180118756}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.568963803658366}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-25.515874059026856, -33.41317950812902, -35.36218373406459, -34.91052514007856, -35.799962817218045]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-25.515874059026856, -49.68239134744269, -50.49379737407571, -55.28037898688572, -40.35528986347788]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.005708065811746, -6.568480058579613, -8.352243842409838, -7.93899907954733, -6.334262850958833]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.005708065811746, -8.984977229062622, -11.770368099261475, -15.481129180118756, -7.271169481220113]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2140277946715983, -1.4033234686062885, -1.771097473959442, -1.645870638709108, -1.4267525945680513]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2140277946715983, -1.823815402681324, -2.595524651893546, -2.4776707879616024, -1.6367978718331873]}}