{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:39.807192", "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-15_to_2012-Jun-18_109.0_19.0"}, "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": 2012060000730}, "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 15 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 18 2012"}, "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": 55474.285280644275}, "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", "S.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": ["South China Sea"]}, "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": 19.0}, "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": 109.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "109.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 108.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 112.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.85, 18.75], [107.75, 19.0], [107.85, 19.25], [107.75, 19.5], [107.97, 20.03], [108.32, 20.18], [108.47, 20.53], [109.0, 20.75], [109.25, 20.65], [109.5, 20.75], [109.75, 20.65], [110.0, 20.75], [110.25, 20.65], [110.5, 20.75], [111.03, 20.53], [111.25, 20.0], [111.03, 19.47], [110.68, 19.32], [110.53, 18.97], [110.0, 18.75], [109.75, 18.85], [109.68, 18.82], [109.65, 18.75], [109.75, 18.5], [109.65, 18.25], [109.75, 18.0], [109.53, 17.47], [109.0, 17.25], [108.75, 17.35], [108.5, 17.25], [107.97, 17.47], [107.75, 18.0], [107.85, 18.25], [107.75, 18.5], [107.85, 18.75]]]]}, "2012-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.85, 18.75], [107.75, 19.0], [107.85, 19.25], [107.75, 19.5], [107.97, 20.03], [108.32, 20.18], [108.47, 20.53], [109.0, 20.75], [109.25, 20.65], [109.5, 20.75], [109.75, 20.65], [110.0, 20.75], [110.25, 20.65], [110.5, 20.75], [111.03, 20.53], [111.18, 20.18], [111.53, 20.03], [111.68, 19.68], [112.03, 19.53], [112.18, 19.18], [112.53, 19.03], [112.75, 18.5], [112.53, 17.97], [112.0, 17.75], [111.75, 17.85], [111.5, 17.75], [110.97, 17.97], [110.75, 18.5], [110.85, 18.75], [110.82, 18.82], [110.75, 18.85], [110.5, 18.75], [110.25, 18.85], [110.0, 18.75], [109.75, 18.85], [109.68, 18.82], [109.65, 18.75], [109.75, 18.5], [109.65, 18.25], [109.75, 18.0], [109.53, 17.47], [109.0, 17.25], [108.75, 17.35], [108.5, 17.25], [107.97, 17.47], [107.75, 18.0], [107.85, 18.25], [107.75, 18.5], [107.85, 18.75]]]]}, "2012-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.85, 18.75], [107.75, 19.0], [107.85, 19.25], [107.75, 19.5], [107.97, 20.03], [108.32, 20.18], [108.47, 20.53], [109.0, 20.75], [109.25, 20.65], [109.5, 20.75], [109.75, 20.65], [110.0, 20.75], [110.25, 20.65], [110.5, 20.75], [111.03, 20.53], [111.18, 20.18], [111.53, 20.03], [111.68, 19.68], [112.03, 19.53], [112.18, 19.18], [112.53, 19.03], [112.75, 18.5], [112.53, 17.97], [112.0, 17.75], [111.75, 17.85], [111.5, 17.75], [110.97, 17.97], [110.75, 18.5], [110.85, 18.75], [110.82, 18.82], [110.75, 18.85], [110.5, 18.75], [110.25, 18.85], [110.0, 18.75], [109.75, 18.85], [109.68, 18.82], [109.65, 18.75], [109.75, 18.5], [109.65, 18.25], [109.75, 18.0], [109.53, 17.47], [109.0, 17.25], [108.75, 17.35], [108.5, 17.25], [107.97, 17.47], [107.75, 18.0], [107.85, 18.25], [107.75, 18.5], [107.85, 18.75]]]]}, "2012-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.47, 18.47], [108.25, 19.0], [108.47, 19.53], [109.0, 19.75], [109.53, 19.53], [109.75, 19.0], [109.53, 18.47], [109.0, 18.25], [108.47, 18.47]]], [[[109.75, 19.5], [109.97, 20.03], [110.5, 20.25], [110.75, 20.15], [111.0, 20.25], [111.53, 20.03], [111.68, 19.68], [112.03, 19.53], [112.18, 19.18], [112.53, 19.03], [112.75, 18.5], [112.53, 17.97], [112.0, 17.75], [111.75, 17.85], [111.5, 17.75], [110.97, 17.97], [110.75, 18.5], [110.85, 18.75], [110.82, 18.82], [110.75, 18.85], [110.5, 18.75], [109.97, 18.97], [109.75, 19.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0292886568230415}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7646286627000405}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.728383533041097, 26.921759267018558, 26.898331057295593, 27.010711748861866]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.19465798045269, 24.465707773470626, 24.402033901726384, 25.439577642350514]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9244967861744808, -1.7269341246733079, -1.7944018641386912, -1.4166872737886063]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0220924798446163, -2.734367903502232, -3.0292886568230415, -1.9180379747286906]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.754076357253338, -1.7000002084634005, -1.8337693774554777, -1.688919600071027]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2534501463678125, -2.10763406146626, -2.3110540522349807, -1.8371050099537523]}}