{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:46.926362", "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": "2023-Jan-05_to_2023-Jan-09_107.0_12.0"}, "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": 2023010000302}, "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": "January 05 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 2023"}, "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": 87763.55025594341}, "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": ["Cambodia", "Vietnam"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 12.0}, "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": 107.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "107.0\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": 108.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.35, 10.75], [105.25, 11.0], [105.46, 11.5], [105.25, 12.0], [105.35, 12.25], [105.25, 12.5], [105.47, 13.03], [106.0, 13.25], [106.25, 13.15], [106.32, 13.18], [106.47, 13.53], [107.0, 13.75], [107.25, 13.65], [107.5, 13.75], [107.75, 13.65], [108.0, 13.75], [108.53, 13.53], [108.75, 13.0], [108.54, 12.5], [108.75, 12.0], [108.53, 11.47], [108.18, 11.32], [108.15, 11.25], [108.25, 11.0], [108.03, 10.47], [107.68, 10.32], [107.53, 9.97], [107.18, 9.82], [107.03, 9.47], [106.5, 9.25], [106.25, 9.35], [106.0, 9.25], [105.47, 9.47], [105.25, 10.0], [105.35, 10.25], [105.25, 10.5], [105.35, 10.75]]]]}, "2023-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.97, 12.03], [105.32, 12.18], [105.35, 12.25], [105.25, 12.5], [105.47, 13.03], [106.0, 13.25], [106.25, 13.15], [106.32, 13.18], [106.35, 13.25], [106.25, 13.5], [106.47, 14.03], [107.0, 14.25], [107.25, 14.15], [107.5, 14.25], [108.03, 14.03], [108.18, 13.68], [108.53, 13.53], [108.75, 13.0], [108.54, 12.5], [108.75, 12.0], [108.53, 11.47], [108.18, 11.32], [108.15, 11.25], [108.25, 11.0], [108.03, 10.47], [107.68, 10.32], [107.53, 9.97], [107.18, 9.82], [107.03, 9.47], [106.5, 9.25], [106.25, 9.35], [106.0, 9.25], [105.47, 9.47], [105.32, 9.82], [104.97, 9.97], [104.75, 10.5], [104.96, 11.0], [104.75, 11.5], [104.97, 12.03]]]]}, "2023-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.97, 12.03], [105.32, 12.18], [105.35, 12.25], [105.25, 12.5], [105.47, 13.03], [106.0, 13.25], [106.25, 13.15], [106.32, 13.18], [106.35, 13.25], [106.25, 13.5], [106.47, 14.03], [107.0, 14.25], [107.25, 14.15], [107.5, 14.25], [108.03, 14.03], [108.18, 13.68], [108.53, 13.53], [108.75, 13.0], [108.54, 12.5], [108.75, 12.0], [108.53, 11.47], [108.18, 11.32], [108.15, 11.25], [108.25, 11.0], [108.03, 10.47], [107.68, 10.32], [107.53, 9.97], [107.18, 9.82], [107.03, 9.47], [106.5, 9.25], [106.25, 9.35], [106.0, 9.25], [105.47, 9.47], [105.32, 9.82], [104.97, 9.97], [104.75, 10.5], [104.96, 11.0], [104.75, 11.5], [104.97, 12.03]]]]}, "2023-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.5, 12.25], [105.75, 12.15], [105.82, 12.18], [105.97, 12.53], [106.5, 12.75], [106.75, 12.65], [107.0, 12.75], [107.53, 12.53], [107.75, 12.0], [107.65, 11.75], [107.75, 11.5], [107.65, 11.25], [107.75, 11.0], [107.65, 10.75], [107.75, 10.5], [107.53, 9.97], [107.18, 9.82], [107.03, 9.47], [106.5, 9.25], [106.25, 9.35], [106.0, 9.25], [105.47, 9.47], [105.32, 9.82], [104.97, 9.97], [104.75, 10.5], [104.96, 11.0], [104.75, 11.5], [104.97, 12.03], [105.5, 12.25]]], [[[106.47, 14.03], [107.0, 14.25], [107.25, 14.15], [107.5, 14.25], [108.03, 14.03], [108.25, 13.5], [108.03, 12.97], [107.5, 12.75], [107.25, 12.85], [107.0, 12.75], [106.47, 12.97], [106.25, 13.5], [106.47, 14.03]]]]}, "2023-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.0, 11.75], [107.53, 11.53], [107.75, 11.0], [107.53, 10.47], [107.0, 10.25], [106.47, 10.47], [106.25, 11.0], [106.47, 11.53], [107.0, 11.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.893978801160017}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.852480927071036}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.88052391578475, 23.12514844015027, 22.39794256238349, 24.407629909656634, 24.76895755418974]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.323961823643913, 18.603538607825897, 18.04668430882549, 23.26401390353658, 24.76895755418974]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7726412825366253, -2.735699478706698, -3.46857367211396, -2.1879652354748385, -1.5853715493532263]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.992407335684902, -4.101938322032993, -4.893978801160017, -2.7464949506717176, -1.5853715493532263]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.109555463386564, -2.030218220205624, -2.5331500051975753, -1.765275686031557, -1.396306200438774]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.056548740221049, -3.1034872911569296, -3.5045512784052177, -2.116656889004348, -1.396306200438774]}}