{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:14.751393", "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-Sep-29_to_2016-Oct-01_112.5_24.5"}, "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": 2016090000703}, "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": "September 29 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 81793.41848376379}, "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": 24.5}, "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": 112.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "112.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 110.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 113.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.35, 23.25], [110.25, 23.5], [110.47, 24.03], [110.82, 24.18], [110.97, 24.53], [111.32, 24.68], [111.35, 24.75], [111.25, 25.0], [111.35, 25.25], [111.25, 25.5], [111.47, 26.03], [111.82, 26.18], [111.85, 26.25], [111.75, 26.5], [111.97, 27.03], [112.5, 27.25], [112.75, 27.15], [113.0, 27.25], [113.53, 27.03], [113.75, 26.5], [113.65, 26.25], [113.75, 26.0], [113.65, 25.75], [113.75, 25.5], [113.65, 25.25], [113.75, 25.0], [113.54, 24.5], [113.75, 24.0], [113.54, 23.5], [113.75, 23.0], [113.54, 22.5], [113.75, 22.0], [113.53, 21.47], [113.0, 21.25], [112.75, 21.35], [112.5, 21.25], [111.97, 21.47], [111.75, 22.0], [111.85, 22.25], [111.82, 22.32], [111.75, 22.35], [111.68, 22.32], [111.53, 21.97], [111.0, 21.75], [110.47, 21.97], [110.25, 22.5], [110.35, 22.75], [110.25, 23.0], [110.35, 23.25]]]]}, "2016-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.35, 23.25], [110.25, 23.5], [110.47, 24.03], [110.82, 24.18], [110.97, 24.53], [111.32, 24.68], [111.35, 24.75], [111.25, 25.0], [111.35, 25.25], [111.25, 25.5], [111.47, 26.03], [111.82, 26.18], [111.85, 26.25], [111.75, 26.5], [111.97, 27.03], [112.5, 27.25], [112.75, 27.15], [113.0, 27.25], [113.53, 27.03], [113.75, 26.5], [113.65, 26.25], [113.75, 26.0], [113.65, 25.75], [113.75, 25.5], [113.65, 25.25], [113.75, 25.0], [113.54, 24.5], [113.75, 24.0], [113.54, 23.5], [113.75, 23.0], [113.54, 22.5], [113.75, 22.0], [113.53, 21.47], [113.0, 21.25], [112.75, 21.35], [112.5, 21.25], [111.97, 21.47], [111.75, 22.0], [111.85, 22.25], [111.82, 22.32], [111.75, 22.35], [111.68, 22.32], [111.53, 21.97], [111.0, 21.75], [110.47, 21.97], [110.25, 22.5], [110.35, 22.75], [110.25, 23.0], [110.35, 23.25]]]]}, "2016-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.35, 23.25], [110.25, 23.5], [110.47, 24.03], [110.82, 24.18], [110.97, 24.53], [111.32, 24.68], [111.35, 24.75], [111.25, 25.0], [111.35, 25.25], [111.25, 25.5], [111.47, 26.03], [111.82, 26.18], [111.85, 26.25], [111.75, 26.5], [111.97, 27.03], [112.5, 27.25], [112.75, 27.15], [113.0, 27.25], [113.53, 27.03], [113.75, 26.5], [113.65, 26.25], [113.75, 26.0], [113.65, 25.75], [113.75, 25.5], [113.65, 25.25], [113.75, 25.0], [113.54, 24.5], [113.75, 24.0], [113.54, 23.5], [113.75, 23.0], [113.54, 22.5], [113.75, 22.0], [113.53, 21.47], [113.0, 21.25], [112.75, 21.35], [112.5, 21.25], [111.97, 21.47], [111.75, 22.0], [111.85, 22.25], [111.82, 22.32], [111.75, 22.35], [111.68, 22.32], [111.53, 21.97], [111.0, 21.75], [110.47, 21.97], [110.25, 22.5], [110.35, 22.75], [110.25, 23.0], [110.35, 23.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.082272496507926}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.005854713365996}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.688693276510776, 18.170531922147177, 20.113069666299396]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.748694086254602, 14.441559328324274, 16.02273181803929]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.860467064925131, -6.183819723559038, -3.9732773516138193]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.082272496507926, -7.765970040777631, -5.857713657507475]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.948033175947091, -2.669313048390271, -1.7005187463381584]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.699208255054126, -3.3152265207844627, -2.0793278353338502]}}