{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:17.801494", "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": "2020-Jun-15_to_2020-Jun-17_110.0_35.0"}, "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": 2020060000482}, "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 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 17 2020"}, "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": 97914.42591142759}, "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": 35.0}, "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": 110.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "110.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 107.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 111.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.38, 35.3], [106.97, 35.47], [106.75, 36.0], [106.97, 36.53], [107.5, 36.75], [107.75, 36.65], [107.82, 36.68], [107.85, 36.75], [107.75, 37.0], [107.97, 37.53], [108.5, 37.75], [108.75, 37.65], [109.0, 37.75], [109.25, 37.65], [109.5, 37.75], [109.75, 37.65], [110.0, 37.75], [110.53, 37.53], [110.68, 37.18], [110.75, 37.15], [111.0, 37.25], [111.53, 37.03], [111.68, 36.68], [112.03, 36.53], [112.25, 36.0], [112.15, 35.75], [112.25, 35.5], [112.03, 34.97], [111.68, 34.82], [111.53, 34.47], [111.18, 34.32], [111.03, 33.97], [110.5, 33.75], [110.25, 33.85], [110.0, 33.75], [109.75, 33.85], [109.5, 33.75], [109.25, 33.85], [109.0, 33.75], [108.75, 33.85], [108.5, 33.75], [108.25, 33.85], [108.0, 33.75], [107.47, 33.97], [107.25, 34.5], [107.35, 34.75], [107.25, 35.0], [107.38, 35.3]]]]}, "2020-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.38, 35.3], [106.97, 35.47], [106.75, 36.0], [106.97, 36.53], [107.5, 36.75], [107.75, 36.65], [107.82, 36.68], [107.85, 36.75], [107.75, 37.0], [107.97, 37.53], [108.5, 37.75], [108.75, 37.65], [109.0, 37.75], [109.25, 37.65], [109.5, 37.75], [109.75, 37.65], [110.0, 37.75], [110.53, 37.53], [110.68, 37.18], [110.75, 37.15], [111.0, 37.25], [111.53, 37.03], [111.68, 36.68], [112.03, 36.53], [112.25, 36.0], [112.15, 35.75], [112.25, 35.5], [112.03, 34.97], [111.68, 34.82], [111.53, 34.47], [111.18, 34.32], [111.03, 33.97], [110.5, 33.75], [110.25, 33.85], [110.0, 33.75], [109.75, 33.85], [109.5, 33.75], [109.25, 33.85], [109.0, 33.75], [108.75, 33.85], [108.5, 33.75], [108.25, 33.85], [108.0, 33.75], [107.47, 33.97], [107.25, 34.5], [107.35, 34.75], [107.25, 35.0], [107.38, 35.3]]]]}, "2020-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.38, 35.3], [106.97, 35.47], [106.75, 36.0], [106.97, 36.53], [107.5, 36.75], [107.75, 36.65], [107.82, 36.68], [107.85, 36.75], [107.75, 37.0], [107.97, 37.53], [108.5, 37.75], [108.75, 37.65], [109.0, 37.75], [109.25, 37.65], [109.5, 37.75], [109.75, 37.65], [110.0, 37.75], [110.53, 37.53], [110.68, 37.18], [110.75, 37.15], [111.0, 37.25], [111.53, 37.03], [111.68, 36.68], [112.03, 36.53], [112.25, 36.0], [112.15, 35.75], [112.25, 35.5], [112.03, 34.97], [111.68, 34.82], [111.53, 34.47], [111.18, 34.32], [111.03, 33.97], [110.5, 33.75], [110.25, 33.85], [110.0, 33.75], [109.75, 33.85], [109.5, 33.75], [109.25, 33.85], [109.0, 33.75], [108.75, 33.85], [108.5, 33.75], [108.25, 33.85], [108.0, 33.75], [107.47, 33.97], [107.25, 34.5], [107.35, 34.75], [107.25, 35.0], [107.38, 35.3]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.406583238922565}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.058969403254296}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.55049342570902, 16.44573681001691, 17.383134970350795]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.306471580421714, 13.668124114010936, 15.290102958996556]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.502304675377495, -6.756290996325368, -5.918312538060024]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.393767099163824, -8.398775301032515, -8.406583238922565]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9508670167961033, -2.3978293452130757, -2.0992118978985568]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.24077718842354, -2.7292822519157203, -2.6753048553616603]}}