{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:38.418990", "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": "2014-Jun-21_to_2014-Jun-24_111.0_26.0"}, "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": 2014060000831}, "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 21 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 24 2014"}, "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": 58603.67769878944}, "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": 26.0}, "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": 111.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "111.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 110.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 112.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.75}, "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": {"2014-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.85, 26.25], [109.75, 26.5], [109.97, 27.03], [110.5, 27.25], [110.75, 27.15], [111.0, 27.25], [111.25, 27.15], [111.5, 27.25], [111.75, 27.15], [112.0, 27.25], [112.25, 27.15], [112.5, 27.25], [113.03, 27.03], [113.25, 26.5], [113.15, 26.25], [113.25, 26.0], [113.03, 25.47], [112.68, 25.32], [112.65, 25.25], [112.75, 25.0], [112.53, 24.47], [112.0, 24.25], [111.75, 24.35], [111.68, 24.32], [111.65, 24.25], [111.75, 24.0], [111.65, 23.75], [111.75, 23.5], [111.53, 22.97], [111.18, 22.82], [111.03, 22.47], [110.5, 22.25], [109.97, 22.47], [109.75, 23.0], [109.97, 23.53], [110.32, 23.68], [110.35, 23.75], [110.25, 24.0], [110.35, 24.25], [110.25, 24.5], [110.35, 24.75], [110.32, 24.82], [109.97, 24.97], [109.75, 25.5], [109.85, 25.75], [109.75, 26.0], [109.85, 26.25]]]]}, "2014-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.85, 26.25], [109.75, 26.5], [109.97, 27.03], [110.5, 27.25], [110.75, 27.15], [111.0, 27.25], [111.25, 27.15], [111.5, 27.25], [111.75, 27.15], [112.0, 27.25], [112.25, 27.15], [112.5, 27.25], [113.03, 27.03], [113.25, 26.5], [113.15, 26.25], [113.25, 26.0], [113.03, 25.47], [112.68, 25.32], [112.65, 25.25], [112.75, 25.0], [112.53, 24.47], [112.0, 24.25], [111.75, 24.35], [111.68, 24.32], [111.65, 24.25], [111.75, 24.0], [111.65, 23.75], [111.75, 23.5], [111.53, 22.97], [111.18, 22.82], [111.03, 22.47], [110.5, 22.25], [109.97, 22.47], [109.75, 23.0], [109.97, 23.53], [110.32, 23.68], [110.35, 23.75], [110.25, 24.0], [110.35, 24.25], [110.25, 24.5], [110.35, 24.75], [110.32, 24.82], [109.97, 24.97], [109.75, 25.5], [109.85, 25.75], [109.75, 26.0], [109.85, 26.25]]]]}, "2014-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.85, 26.25], [109.75, 26.5], [109.97, 27.03], [110.5, 27.25], [110.75, 27.15], [111.0, 27.25], [111.25, 27.15], [111.5, 27.25], [111.75, 27.15], [112.0, 27.25], [112.25, 27.15], [112.5, 27.25], [113.03, 27.03], [113.25, 26.5], [113.15, 26.25], [113.25, 26.0], [113.03, 25.47], [112.68, 25.32], [112.65, 25.25], [112.75, 25.0], [112.53, 24.47], [112.0, 24.25], [111.75, 24.35], [111.68, 24.32], [111.65, 24.25], [111.75, 24.0], [111.65, 23.75], [111.75, 23.5], [111.53, 22.97], [111.18, 22.82], [111.03, 22.47], [110.5, 22.25], [109.97, 22.47], [109.75, 23.0], [109.97, 23.53], [110.32, 23.68], [110.35, 23.75], [110.25, 24.0], [110.35, 24.25], [110.25, 24.5], [110.35, 24.75], [110.32, 24.82], [109.97, 24.97], [109.75, 25.5], [109.85, 25.75], [109.75, 26.0], [109.85, 26.25]]]]}, "2014-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.0, 27.25], [112.53, 27.03], [112.75, 26.5], [112.53, 25.97], [112.0, 25.75], [111.7, 25.88], [111.53, 25.47], [111.0, 25.25], [110.47, 25.47], [110.25, 26.0], [110.47, 26.53], [111.0, 26.75], [111.3, 26.63], [111.47, 27.03], [112.0, 27.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.074608818069976}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.408909036110619}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.15689853514357, 23.049009015840852, 23.028881777948754, 23.879156002175137]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.752133772801642, 20.679924015025847, 20.073883476843548, 23.369381973675445]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2743323779525353, -3.4780999180873935, -3.4914225231190943, -3.2290680724253775]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.9046310814412095, -5.074608818069976, -4.637530910676787, -3.5911493006900628]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6550733864281006, -1.79243752007381, -1.792066675964362, -1.405681073939696]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9214089492303164, -2.4149839981655257, -2.076771860257456, -1.4184702641702536]}}