{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:36.968951", "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": "2016-Jun-24_to_2016-Jun-28_113.5_31.0"}, "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": 2016060000815}, "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 24 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 28 2016"}, "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": 390720.00149077957}, "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": ["China"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": []}, "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": 31.0}, "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": 113.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "113.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 105.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 117.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.97, 31.03], [105.32, 31.18], [105.47, 31.53], [105.82, 31.68], [105.97, 32.03], [106.32, 32.18], [106.47, 32.53], [106.82, 32.68], [106.97, 33.03], [107.32, 33.18], [107.47, 33.53], [108.0, 33.75], [108.25, 33.65], [108.5, 33.75], [109.03, 33.53], [109.18, 33.18], [109.25, 33.15], [109.5, 33.25], [109.75, 33.15], [110.0, 33.25], [110.53, 33.03], [110.68, 32.68], [110.75, 32.65], [111.0, 32.75], [111.25, 32.65], [111.5, 32.75], [111.75, 32.65], [112.0, 32.75], [112.25, 32.65], [112.5, 32.75], [112.75, 32.65], [113.0, 32.75], [113.25, 32.65], [113.5, 32.75], [113.75, 32.65], [113.82, 32.68], [113.97, 33.03], [114.5, 33.25], [114.75, 33.15], [115.0, 33.25], [115.53, 33.03], [115.68, 32.68], [116.03, 32.53], [116.25, 32.0], [116.15, 31.75], [116.25, 31.5], [116.03, 30.97], [115.68, 30.82], [115.53, 30.47], [115.0, 30.25], [114.75, 30.35], [114.68, 30.32], [114.53, 29.97], [114.18, 29.82], [114.03, 29.47], [113.68, 29.32], [113.53, 28.97], [113.0, 28.75], [112.75, 28.85], [112.68, 28.82], [112.53, 28.47], [112.0, 28.25], [111.75, 28.35], [111.5, 28.25], [111.25, 28.35], [111.0, 28.25], [110.47, 28.47], [110.32, 28.82], [110.25, 28.85], [110.0, 28.75], [109.47, 28.97], [109.32, 29.32], [108.97, 29.47], [108.82, 29.82], [108.75, 29.85], [108.5, 29.75], [107.97, 29.97], [107.82, 30.32], [107.75, 30.35], [107.68, 30.32], [107.53, 29.97], [107.18, 29.82], [107.15, 29.75], [107.25, 29.5], [107.03, 28.97], [106.5, 28.75], [106.25, 28.85], [106.0, 28.75], [105.47, 28.97], [105.32, 29.32], [104.97, 29.47], [104.75, 30.0], [104.85, 30.25], [104.75, 30.5], [104.97, 31.03]]]]}, "2016-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.97, 31.03], [105.32, 31.18], [105.47, 31.53], [105.82, 31.68], [105.97, 32.03], [106.32, 32.18], [106.47, 32.53], [106.82, 32.68], [106.97, 33.03], [107.32, 33.18], [107.47, 33.53], [108.0, 33.75], [108.25, 33.65], [108.5, 33.75], [109.03, 33.53], [109.18, 33.18], [109.25, 33.15], [109.5, 33.25], [109.75, 33.15], [110.0, 33.25], [110.53, 33.03], [110.68, 32.68], [110.75, 32.65], [111.0, 32.75], [111.25, 32.65], [111.5, 32.75], [111.75, 32.65], [112.0, 32.75], [112.25, 32.65], [112.5, 32.75], [112.75, 32.65], [113.0, 32.75], [113.25, 32.65], [113.5, 32.75], [113.75, 32.65], [113.82, 32.68], [113.97, 33.03], [114.5, 33.25], [114.75, 33.15], [115.0, 33.25], [115.53, 33.03], [115.68, 32.68], [116.03, 32.53], [116.25, 32.0], [116.15, 31.75], [116.18, 31.68], [116.25, 31.65], [116.5, 31.75], [117.03, 31.53], [117.18, 31.18], [117.53, 31.03], [117.75, 30.5], [117.53, 29.97], [117.0, 29.75], [116.75, 29.85], [116.68, 29.82], [116.53, 29.47], [116.18, 29.32], [116.03, 28.97], [115.5, 28.75], [115.25, 28.85], [115.0, 28.75], [114.75, 28.85], [114.5, 28.75], [114.25, 28.85], [114.18, 28.82], [114.03, 28.47], [113.5, 28.25], [113.25, 28.35], [113.0, 28.25], [112.75, 28.35], [112.68, 28.32], [112.53, 27.97], [112.0, 27.75], [111.75, 27.85], [111.5, 27.75], [110.97, 27.97], [110.82, 28.32], [110.47, 28.47], [110.32, 28.82], [110.25, 28.85], [110.18, 28.82], [110.03, 28.47], [109.5, 28.25], [109.25, 28.35], [109.18, 28.32], [109.03, 27.97], [108.5, 27.75], [107.97, 27.97], [107.82, 28.32], [107.47, 28.47], [107.25, 29.0], [107.35, 29.25], [107.32, 29.32], [107.25, 29.35], [107.18, 29.32], [107.03, 28.97], [106.5, 28.75], [106.25, 28.85], [106.0, 28.75], [105.47, 28.97], [105.32, 29.32], [104.97, 29.47], [104.75, 30.0], [104.85, 30.25], [104.75, 30.5], [104.97, 31.03]]]]}, "2016-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.97, 31.03], [105.32, 31.18], [105.47, 31.53], [105.82, 31.68], [105.97, 32.03], [106.32, 32.18], [106.47, 32.53], [106.82, 32.68], [106.97, 33.03], [107.32, 33.18], [107.47, 33.53], [108.0, 33.75], [108.25, 33.65], [108.5, 33.75], [109.03, 33.53], [109.18, 33.18], [109.25, 33.15], [109.5, 33.25], [109.75, 33.15], [110.0, 33.25], [110.53, 33.03], [110.68, 32.68], [110.75, 32.65], [111.0, 32.75], [111.25, 32.65], [111.5, 32.75], [111.75, 32.65], [112.0, 32.75], [112.25, 32.65], [112.5, 32.75], [112.75, 32.65], [113.0, 32.75], [113.25, 32.65], [113.5, 32.75], [113.75, 32.65], [113.82, 32.68], [113.97, 33.03], [114.5, 33.25], [114.75, 33.15], [115.0, 33.25], [115.53, 33.03], [115.68, 32.68], [116.03, 32.53], [116.25, 32.0], [116.15, 31.75], [116.18, 31.68], [116.25, 31.65], [116.5, 31.75], [117.03, 31.53], [117.18, 31.18], [117.53, 31.03], [117.75, 30.5], [117.53, 29.97], [117.0, 29.75], [116.75, 29.85], [116.68, 29.82], [116.53, 29.47], [116.18, 29.32], [116.03, 28.97], [115.5, 28.75], [115.25, 28.85], [115.0, 28.75], [114.75, 28.85], [114.5, 28.75], [114.25, 28.85], [114.18, 28.82], [114.03, 28.47], [113.5, 28.25], [113.25, 28.35], [113.0, 28.25], [112.75, 28.35], [112.68, 28.32], [112.53, 27.97], [112.0, 27.75], [111.75, 27.85], [111.5, 27.75], [110.97, 27.97], [110.82, 28.32], [110.47, 28.47], [110.32, 28.82], [110.25, 28.85], [110.18, 28.82], [110.03, 28.47], [109.5, 28.25], [109.25, 28.35], [109.18, 28.32], [109.03, 27.97], [108.5, 27.75], [107.97, 27.97], [107.82, 28.32], [107.75, 28.35], [107.5, 28.25], [106.97, 28.47], [106.8, 28.88], [106.5, 28.75], [106.25, 28.85], [106.0, 28.75], [105.47, 28.97], [105.32, 29.32], [104.97, 29.47], [104.75, 30.0], [104.85, 30.25], [104.75, 30.5], [104.97, 31.03]]]]}, "2016-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.47, 30.53], [105.82, 30.68], [105.97, 31.03], [106.5, 31.25], [106.75, 31.15], [107.0, 31.25], [107.25, 31.15], [107.5, 31.25], [107.75, 31.15], [108.0, 31.25], [108.25, 31.15], [108.5, 31.25], [108.75, 31.15], [109.0, 31.25], [109.53, 31.03], [109.68, 30.68], [109.75, 30.65], [110.0, 30.75], [110.25, 30.65], [110.32, 30.68], [110.47, 31.03], [110.82, 31.18], [110.97, 31.53], [111.5, 31.75], [111.75, 31.65], [111.82, 31.68], [111.97, 32.03], [112.5, 32.25], [112.75, 32.15], [112.82, 32.18], [112.97, 32.53], [113.5, 32.75], [114.0, 32.54], [114.5, 32.75], [114.75, 32.65], [115.0, 32.75], [115.25, 32.65], [115.5, 32.75], [116.03, 32.53], [116.25, 32.0], [116.15, 31.75], [116.18, 31.68], [116.25, 31.65], [116.5, 31.75], [117.03, 31.53], [117.18, 31.18], [117.53, 31.03], [117.75, 30.5], [117.53, 29.97], [117.0, 29.75], [116.75, 29.85], [116.68, 29.82], [116.53, 29.47], [116.18, 29.32], [116.03, 28.97], [115.5, 28.75], [115.25, 28.85], [115.0, 28.75], [114.75, 28.85], [114.5, 28.75], [114.25, 28.85], [114.18, 28.82], [114.03, 28.47], [113.5, 28.25], [113.25, 28.35], [113.0, 28.25], [112.75, 28.35], [112.68, 28.32], [112.53, 27.97], [112.0, 27.75], [111.75, 27.85], [111.5, 27.75], [110.97, 27.97], [110.82, 28.32], [110.47, 28.47], [110.32, 28.82], [110.25, 28.85], [110.18, 28.82], [110.03, 28.47], [109.5, 28.25], [109.25, 28.35], [109.18, 28.32], [109.03, 27.97], [108.5, 27.75], [107.97, 27.97], [107.82, 28.32], [107.75, 28.35], [107.5, 28.25], [106.97, 28.47], [106.8, 28.88], [106.5, 28.75], [106.25, 28.85], [106.0, 28.75], [105.47, 28.97], [105.25, 29.5], [105.35, 29.75], [105.25, 30.0], [105.47, 30.53]]]]}, "2016-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.0, 30.25], [108.25, 30.15], [108.5, 30.25], [108.75, 30.15], [108.82, 30.18], [108.97, 30.53], [109.5, 30.75], [109.75, 30.65], [110.0, 30.75], [110.5, 30.54], [110.82, 30.68], [110.97, 31.03], [111.32, 31.18], [111.47, 31.53], [111.82, 31.68], [111.97, 32.03], [112.5, 32.25], [112.75, 32.15], [113.0, 32.25], [113.25, 32.15], [113.5, 32.25], [113.75, 32.15], [114.0, 32.25], [114.25, 32.15], [114.5, 32.25], [114.75, 32.15], [115.0, 32.25], [115.53, 32.03], [115.68, 31.68], [116.03, 31.53], [116.18, 31.18], [116.25, 31.15], [116.5, 31.25], [116.75, 31.15], [117.0, 31.25], [117.53, 31.03], [117.75, 30.5], [117.53, 29.97], [117.0, 29.75], [116.75, 29.85], [116.68, 29.82], [116.53, 29.47], [116.0, 29.25], [115.75, 29.35], [115.5, 29.25], [115.25, 29.35], [115.0, 29.25], [114.75, 29.35], [114.68, 29.32], [114.53, 28.97], [114.0, 28.75], [113.75, 28.85], [113.68, 28.82], [113.53, 28.47], [113.0, 28.25], [112.75, 28.35], [112.5, 28.25], [112.25, 28.35], [112.0, 28.25], [111.75, 28.35], [111.5, 28.25], [111.25, 28.35], [111.0, 28.25], [110.47, 28.47], [110.32, 28.82], [110.25, 28.85], [110.18, 28.82], [110.03, 28.47], [109.5, 28.25], [109.25, 28.35], [109.18, 28.32], [109.03, 27.97], [108.5, 27.75], [107.97, 27.97], [107.82, 28.32], [107.75, 28.35], [107.5, 28.25], [106.97, 28.47], [106.75, 29.0], [106.97, 29.53], [107.32, 29.68], [107.47, 30.03], [108.0, 30.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.326680528360896}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.3203490894717556}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.58649997940256, 19.318148089006513, 20.03165341361455, 20.722641728622364, 21.12368456069862]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.431125635331341, 14.441572171035602, 14.942251458796989, 17.715004939642142, 19.22360632972402]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.234924755892116, -5.7039470036935835, -5.069305790290912, -5.215490167539287, -5.317329843825589]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.033978387731281, -8.326680528360896, -6.710109803533385, -7.237267204102636, -8.175850889147569]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1754673670594427, -2.3415357913399664, -2.06055660932703, -2.025466053715565, -2.022213343493731]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.018346478413305, -3.1820980328618744, -2.6127562262592634, -2.756824584461554, -2.833053115113618]}}