{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:47.084062", "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-Mar-06_to_2012-Mar-10_120.5_-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": 2012030000493}, "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": "March 06 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 10 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": 78307.08292945728}, "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": []}, "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": 120.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "120.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 106.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 125.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -74.75}, "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": {"2012-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.97, -75.03], [105.75, -74.5], [105.97, -73.97], [106.5, -73.75], [106.75, -73.85], [106.82, -73.82], [106.97, -73.47], [107.5, -73.25], [107.75, -73.35], [108.0, -73.25], [108.25, -73.35], [108.5, -73.25], [108.75, -73.35], [109.0, -73.25], [109.25, -73.35], [109.5, -73.25], [109.75, -73.35], [110.0, -73.25], [110.25, -73.35], [110.5, -73.25], [110.75, -73.35], [111.0, -73.25], [111.25, -73.35], [111.5, -73.25], [111.75, -73.35], [112.0, -73.25], [112.25, -73.35], [112.5, -73.25], [112.75, -73.35], [113.0, -73.25], [113.25, -73.35], [113.5, -73.25], [113.75, -73.35], [114.0, -73.25], [114.53, -73.47], [114.68, -73.82], [114.75, -73.85], [115.0, -73.75], [115.25, -73.85], [115.5, -73.75], [115.75, -73.85], [116.0, -73.75], [116.25, -73.85], [116.5, -73.75], [116.75, -73.85], [116.82, -73.82], [116.97, -73.47], [117.5, -73.25], [118.03, -73.47], [118.18, -73.82], [118.25, -73.85], [118.32, -73.82], [118.47, -73.47], [118.82, -73.32], [118.97, -72.97], [119.32, -72.82], [119.47, -72.47], [120.0, -72.25], [120.25, -72.35], [120.5, -72.25], [120.75, -72.35], [121.0, -72.25], [121.25, -72.35], [121.5, -72.25], [121.75, -72.35], [122.0, -72.25], [122.25, -72.35], [122.5, -72.25], [122.75, -72.35], [122.82, -72.32], [122.97, -71.97], [123.5, -71.75], [123.75, -71.85], [124.0, -71.75], [124.25, -71.85], [124.5, -71.75], [124.75, -71.85], [125.0, -71.75], [125.25, -71.85], [125.5, -71.75], [126.03, -71.97], [126.25, -72.5], [126.03, -73.03], [125.5, -73.25], [125.25, -73.15], [125.18, -73.18], [125.03, -73.53], [124.5, -73.75], [124.25, -73.65], [124.0, -73.75], [123.75, -73.65], [123.5, -73.75], [123.25, -73.65], [123.0, -73.75], [122.75, -73.65], [122.68, -73.68], [122.53, -74.03], [122.0, -74.25], [121.75, -74.15], [121.68, -74.18], [121.65, -74.25], [121.75, -74.5], [121.53, -75.03], [121.0, -75.25], [120.75, -75.15], [120.5, -75.25], [119.97, -75.03], [119.82, -74.68], [119.75, -74.65], [119.5, -74.75], [119.25, -74.65], [119.18, -74.68], [119.03, -75.03], [118.5, -75.25], [118.25, -75.15], [118.0, -75.25], [117.75, -75.15], [117.5, -75.25], [117.25, -75.15], [117.0, -75.25], [116.75, -75.15], [116.5, -75.25], [116.25, -75.15], [116.0, -75.25], [115.75, -75.15], [115.5, -75.25], [115.25, -75.15], [115.0, -75.25], [114.75, -75.15], [114.5, -75.25], [114.25, -75.15], [114.0, -75.25], [113.75, -75.15], [113.5, -75.25], [113.25, -75.15], [113.0, -75.25], [112.75, -75.15], [112.5, -75.25], [112.25, -75.15], [112.0, -75.25], [111.75, -75.15], [111.5, -75.25], [111.25, -75.15], [111.0, -75.25], [110.75, -75.15], [110.5, -75.25], [110.25, -75.15], [110.0, -75.25], [109.75, -75.15], [109.5, -75.25], [109.25, -75.15], [109.0, -75.25], [108.75, -75.15], [108.5, -75.25], [108.25, -75.15], [108.0, -75.25], [107.75, -75.15], [107.5, -75.25], [107.25, -75.15], [107.0, -75.25], [106.75, -75.15], [106.5, -75.25], [105.97, -75.03]]]]}, "2012-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.97, -75.03], [105.75, -74.5], [105.97, -73.97], [106.5, -73.75], [106.75, -73.85], [106.82, -73.82], [106.97, -73.47], [107.5, -73.25], [107.75, -73.35], [108.0, -73.25], [108.25, -73.35], [108.5, -73.25], [108.75, -73.35], [109.0, -73.25], [109.25, -73.35], [109.5, -73.25], [109.75, -73.35], [110.0, -73.25], [110.25, -73.35], [110.32, -73.32], [110.47, -72.97], [111.0, -72.75], [111.25, -72.85], [111.5, -72.75], [111.75, -72.85], [112.0, -72.75], [112.25, -72.85], [112.5, -72.75], [112.75, -72.85], [113.0, -72.75], [113.53, -72.97], [113.68, -73.32], [113.75, -73.35], [114.0, -73.25], [114.53, -73.47], [114.68, -73.82], [114.75, -73.85], [115.0, -73.75], [115.25, -73.85], [115.5, -73.75], [115.75, -73.85], [116.0, -73.75], [116.25, -73.85], [116.5, -73.75], [116.75, -73.85], [116.82, -73.82], [116.97, -73.47], [117.5, -73.25], [118.03, -73.47], [118.18, -73.82], [118.25, -73.85], [118.32, -73.82], [118.46, -73.5], [118.25, -73.0], [118.47, -72.47], [119.0, -72.25], [119.25, -72.35], [119.5, -72.25], [119.75, -72.35], [120.0, -72.25], [120.25, -72.35], [120.5, -72.25], [120.75, -72.35], [121.0, -72.25], [121.25, -72.35], [121.5, -72.25], [121.75, -72.35], [122.0, -72.25], [122.25, -72.35], [122.5, -72.25], [122.75, -72.35], [122.82, -72.32], [122.97, -71.97], [123.5, -71.75], [123.75, -71.85], [124.0, -71.75], [124.25, -71.85], [124.5, -71.75], [124.75, -71.85], [125.0, -71.75], [125.25, -71.85], [125.5, -71.75], [126.03, -71.97], [126.25, -72.5], [126.03, -73.03], [125.5, -73.25], [125.25, -73.15], [125.18, -73.18], [125.03, -73.53], [124.5, -73.75], [124.25, -73.65], [124.0, -73.75], [123.75, -73.65], [123.5, -73.75], [123.25, -73.65], [123.0, -73.75], [122.75, -73.65], [122.68, -73.68], [122.53, -74.03], [122.0, -74.25], [121.75, -74.15], [121.68, -74.18], [121.65, -74.25], [121.75, -74.5], [121.53, -75.03], [121.0, -75.25], [120.75, -75.15], [120.5, -75.25], [119.97, -75.03], [119.82, -74.68], [119.75, -74.65], [119.5, -74.75], [119.25, -74.65], [119.18, -74.68], [119.03, -75.03], [118.5, -75.25], [118.25, -75.15], [118.0, -75.25], [117.75, -75.15], [117.5, -75.25], [117.25, -75.15], [117.0, -75.25], [116.75, -75.15], [116.5, -75.25], [116.25, -75.15], [116.0, -75.25], [115.75, -75.15], [115.5, -75.25], [115.25, -75.15], [115.0, -75.25], [114.75, -75.15], [114.5, -75.25], [114.25, -75.15], [114.0, -75.25], [113.75, -75.15], [113.5, -75.25], [113.25, -75.15], [113.0, -75.25], [112.75, -75.15], [112.5, -75.25], [112.25, -75.15], [112.0, -75.25], [111.75, -75.15], [111.5, -75.25], [111.25, -75.15], [111.0, -75.25], [110.75, -75.15], [110.5, -75.25], [110.25, -75.15], [110.0, -75.25], [109.75, -75.15], [109.5, -75.25], [109.25, -75.15], [109.0, -75.25], [108.75, -75.15], [108.5, -75.25], [108.25, -75.15], [108.0, -75.25], [107.75, -75.15], [107.5, -75.25], [107.25, -75.15], [107.0, -75.25], [106.75, -75.15], [106.5, -75.25], [105.97, -75.03]]]]}, "2012-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.97, -75.03], [105.75, -74.5], [105.97, -73.97], [106.5, -73.75], [106.75, -73.85], [106.82, -73.82], [106.97, -73.47], [107.5, -73.25], [107.75, -73.35], [108.0, -73.25], [108.25, -73.35], [108.5, -73.25], [108.75, -73.35], [109.0, -73.25], [109.25, -73.35], [109.5, -73.25], [109.75, -73.35], [110.0, -73.25], [110.25, -73.35], [110.32, -73.32], [110.47, -72.97], [111.0, -72.75], [111.25, -72.85], [111.5, -72.75], [111.75, -72.85], [112.0, -72.75], [112.25, -72.85], [112.5, -72.75], [112.75, -72.85], [113.0, -72.75], [113.53, -72.97], [113.68, -73.32], [113.75, -73.35], [114.0, -73.25], [114.53, -73.47], [114.68, -73.82], [114.75, -73.85], [115.0, -73.75], [115.25, -73.85], [115.5, -73.75], [115.75, -73.85], [116.0, -73.75], [116.25, -73.85], [116.5, -73.75], [115.97, -73.53], [115.75, -73.0], [115.97, -72.47], [116.5, -72.25], [116.75, -72.35], [117.0, -72.25], [117.25, -72.35], [117.5, -72.25], [117.75, -72.35], [117.82, -72.32], [117.97, -71.97], [118.5, -71.75], [118.75, -71.85], [119.0, -71.75], [119.25, -71.85], [119.5, -71.75], [119.75, -71.85], [120.0, -71.75], [120.25, -71.85], [120.5, -71.75], [120.75, -71.85], [121.0, -71.75], [121.25, -71.85], [121.5, -71.75], [121.75, -71.85], [122.0, -71.75], [122.25, -71.85], [122.5, -71.75], [122.75, -71.85], [123.0, -71.75], [123.25, -71.85], [123.5, -71.75], [123.75, -71.85], [124.0, -71.75], [124.25, -71.85], [124.5, -71.75], [124.75, -71.85], [125.0, -71.75], [125.25, -71.85], [125.5, -71.75], [126.03, -71.97], [126.25, -72.5], [126.03, -73.03], [125.5, -73.25], [125.25, -73.15], [125.18, -73.18], [125.03, -73.53], [124.5, -73.75], [124.25, -73.65], [124.0, -73.75], [123.75, -73.65], [123.5, -73.75], [123.25, -73.65], [123.0, -73.75], [122.75, -73.65], [122.68, -73.68], [122.53, -74.03], [122.0, -74.25], [121.75, -74.15], [121.68, -74.18], [121.65, -74.25], [121.75, -74.5], [121.53, -75.03], [121.0, -75.25], [120.75, -75.15], [120.5, -75.25], [119.97, -75.03], [119.82, -74.68], [119.75, -74.65], [119.5, -74.75], [119.25, -74.65], [119.18, -74.68], [119.03, -75.03], [118.5, -75.25], [118.25, -75.15], [118.0, -75.25], [117.75, -75.15], [117.5, -75.25], [117.25, -75.15], [117.0, -75.25], [116.75, -75.15], [116.5, -75.25], [116.25, -75.15], [116.0, -75.25], [115.75, -75.15], [115.5, -75.25], [115.25, -75.15], [115.0, -75.25], [114.75, -75.15], [114.5, -75.25], [114.25, -75.15], [114.0, -75.25], [113.75, -75.15], [113.5, -75.25], [113.25, -75.15], [113.0, -75.25], [112.75, -75.15], [112.5, -75.25], [112.25, -75.15], [112.0, -75.25], [111.75, -75.15], [111.5, -75.25], [111.25, -75.15], [111.0, -75.25], [110.75, -75.15], [110.5, -75.25], [110.25, -75.15], [110.0, -75.25], [109.75, -75.15], [109.5, -75.25], [109.25, -75.15], [109.0, -75.25], [108.75, -75.15], [108.5, -75.25], [108.25, -75.15], [108.0, -75.25], [107.75, -75.15], [107.5, -75.25], [107.25, -75.15], [107.0, -75.25], [106.75, -75.15], [106.5, -75.25], [105.97, -75.03]], [[116.75, -73.85], [116.82, -73.82], [116.88, -73.7], [116.75, -73.65], [116.5, -73.75], [116.75, -73.85]], [[118.32, -73.82], [118.38, -73.7], [118.25, -73.65], [118.13, -73.7], [118.18, -73.82], [118.25, -73.85], [118.32, -73.82]]]]}, "2012-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.25, -73.5], [110.47, -72.97], [111.0, -72.75], [111.25, -72.85], [111.5, -72.75], [111.75, -72.85], [112.0, -72.75], [112.25, -72.85], [112.5, -72.75], [112.75, -72.85], [113.0, -72.75], [113.53, -72.97], [113.75, -73.5], [113.53, -74.03], [113.0, -74.25], [112.75, -74.15], [112.5, -74.25], [112.25, -74.15], [112.0, -74.25], [111.75, -74.15], [111.5, -74.25], [111.25, -74.15], [111.0, -74.25], [110.47, -74.03], [110.25, -73.5]]], [[[115.75, -73.0], [115.97, -72.47], [116.5, -72.25], [116.75, -72.35], [117.0, -72.25], [117.25, -72.35], [117.5, -72.25], [117.75, -72.35], [117.82, -72.32], [117.97, -71.97], [118.5, -71.75], [118.75, -71.85], [119.0, -71.75], [119.25, -71.85], [119.5, -71.75], [119.75, -71.85], [120.0, -71.75], [120.25, -71.85], [120.5, -71.75], [120.75, -71.85], [121.0, -71.75], [121.25, -71.85], [121.5, -71.75], [121.75, -71.85], [122.0, -71.75], [122.25, -71.85], [122.5, -71.75], [122.75, -71.85], [123.0, -71.75], [123.25, -71.85], [123.5, -71.75], [124.03, -71.97], [124.25, -72.5], [124.03, -73.03], [123.5, -73.25], [123.25, -73.15], [123.0, -73.25], [122.75, -73.15], [122.5, -73.25], [122.25, -73.15], [122.0, -73.25], [121.75, -73.15], [121.68, -73.18], [121.53, -73.53], [121.0, -73.75], [120.75, -73.65], [120.5, -73.75], [120.25, -73.65], [120.0, -73.75], [119.75, -73.65], [119.5, -73.75], [119.25, -73.65], [119.0, -73.75], [118.75, -73.65], [118.5, -73.75], [118.25, -73.65], [118.0, -73.75], [117.75, -73.65], [117.5, -73.75], [117.25, -73.65], [117.0, -73.75], [116.75, -73.65], [116.5, -73.75], [115.97, -73.53], [115.75, -73.0]]]]}, "2012-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.97, -73.53], [115.75, -73.0], [115.97, -72.47], [116.5, -72.25], [116.75, -72.35], [117.0, -72.25], [117.25, -72.35], [117.5, -72.25], [117.75, -72.35], [117.82, -72.32], [117.97, -71.97], [118.5, -71.75], [118.75, -71.85], [119.0, -71.75], [119.25, -71.85], [119.5, -71.75], [119.75, -71.85], [120.0, -71.75], [120.25, -71.85], [120.5, -71.75], [120.75, -71.85], [121.0, -71.75], [121.25, -71.85], [121.5, -71.75], [121.75, -71.85], [122.0, -71.75], [122.25, -71.85], [122.5, -71.75], [122.75, -71.85], [123.0, -71.75], [123.25, -71.85], [123.5, -71.75], [124.03, -71.97], [124.25, -72.5], [124.03, -73.03], [123.5, -73.25], [123.25, -73.15], [123.0, -73.25], [122.75, -73.15], [122.5, -73.25], [122.25, -73.15], [122.0, -73.25], [121.75, -73.15], [121.68, -73.18], [121.53, -73.53], [121.0, -73.75], [120.75, -73.65], [120.5, -73.75], [120.25, -73.65], [120.0, -73.75], [119.75, -73.65], [119.5, -73.75], [119.25, -73.65], [119.0, -73.75], [118.75, -73.65], [118.5, -73.75], [118.25, -73.65], [118.0, -73.75], [117.75, -73.65], [117.5, -73.75], [117.25, -73.65], [117.0, -73.75], [116.75, -73.65], [116.5, -73.75], [115.97, -73.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.769313542869185}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.372221023602708}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-53.57935439010643, -54.295884007622504, -53.9428587781519, -51.53822367479091, -50.95134057541665]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-55.737304125089196, -57.27154847148378, -56.32141656839363, -54.40341034674813, -51.94933493025994]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.146008746528864, -6.388523946006817, -6.484165259508822, -6.458623450976816, -6.459757753004418]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.050987399267058, -7.267295110727474, -7.769313542869185, -6.933040978305513, -6.572248145669391]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.321760143474869, -1.3872815826204812, -1.3715616517888551, -1.2639834453040384, -1.239093432854413]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4113218905671665, -1.5765576995629467, -1.5376415474865137, -1.3805090814917138, -1.2717315525419968]}}