{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:40.347279", "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": "2019-Oct-22_to_2019-Oct-25_92.0_42.5"}, "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": 2019100000752}, "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": "October 22 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 25 2019"}, "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": 69016.24767281205}, "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.C.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": 42.5}, "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": 92.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "92.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 89.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 92.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.97, 42.53], [89.38, 42.7], [89.25, 43.0], [89.47, 43.53], [90.0, 43.75], [90.25, 43.65], [90.5, 43.75], [90.75, 43.65], [91.0, 43.75], [91.25, 43.65], [91.5, 43.75], [91.75, 43.65], [92.0, 43.75], [92.53, 43.53], [92.75, 43.0], [92.65, 42.75], [92.68, 42.68], [93.03, 42.53], [93.25, 42.0], [93.15, 41.75], [93.25, 41.5], [93.15, 41.25], [93.25, 41.0], [93.03, 40.47], [92.5, 40.25], [92.25, 40.35], [92.0, 40.25], [91.75, 40.35], [91.5, 40.25], [91.25, 40.35], [91.0, 40.25], [90.75, 40.35], [90.5, 40.25], [90.25, 40.35], [90.0, 40.25], [89.47, 40.47], [89.32, 40.82], [88.97, 40.97], [88.75, 41.5], [88.85, 41.75], [88.75, 42.0], [88.97, 42.53]]]]}, "2019-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.97, 42.53], [89.38, 42.7], [89.25, 43.0], [89.47, 43.53], [90.0, 43.75], [90.25, 43.65], [90.5, 43.75], [90.75, 43.65], [91.0, 43.75], [91.25, 43.65], [91.5, 43.75], [91.75, 43.65], [92.0, 43.75], [92.53, 43.53], [92.68, 43.18], [93.03, 43.03], [93.25, 42.5], [93.15, 42.25], [93.25, 42.0], [93.15, 41.75], [93.25, 41.5], [93.15, 41.25], [93.25, 41.0], [93.03, 40.47], [92.5, 40.25], [92.25, 40.35], [92.0, 40.25], [91.75, 40.35], [91.68, 40.32], [91.53, 39.97], [91.0, 39.75], [90.47, 39.97], [90.32, 40.32], [90.25, 40.35], [90.0, 40.25], [89.47, 40.47], [89.32, 40.82], [88.97, 40.97], [88.75, 41.5], [88.85, 41.75], [88.75, 42.0], [88.97, 42.53]]]]}, "2019-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.97, 42.53], [89.38, 42.7], [89.25, 43.0], [89.47, 43.53], [90.0, 43.75], [90.25, 43.65], [90.5, 43.75], [90.75, 43.65], [91.0, 43.75], [91.25, 43.65], [91.5, 43.75], [91.75, 43.65], [92.0, 43.75], [92.53, 43.53], [92.68, 43.18], [93.03, 43.03], [93.25, 42.5], [93.15, 42.25], [93.25, 42.0], [93.15, 41.75], [93.25, 41.5], [93.15, 41.25], [93.25, 41.0], [93.03, 40.47], [92.5, 40.25], [92.25, 40.35], [92.0, 40.25], [91.75, 40.35], [91.68, 40.32], [91.53, 39.97], [91.0, 39.75], [90.47, 39.97], [90.32, 40.32], [90.25, 40.35], [90.0, 40.25], [89.47, 40.47], [89.32, 40.82], [88.97, 40.97], [88.75, 41.5], [88.85, 41.75], [88.75, 42.0], [88.97, 42.53]]]]}, "2019-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.47, 39.97], [90.25, 40.5], [90.47, 41.03], [91.0, 41.25], [91.53, 41.03], [91.75, 40.5], [91.53, 39.97], [91.0, 39.75], [90.47, 39.97]]], [[[91.25, 42.5], [91.47, 43.03], [92.0, 43.25], [92.25, 43.15], [92.5, 43.25], [93.03, 43.03], [93.25, 42.5], [93.03, 41.97], [92.5, 41.75], [92.25, 41.85], [92.0, 41.75], [91.47, 41.97], [91.25, 42.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.143089610468905}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.95690432778748}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.878680645708073, 1.4489511833053257, 2.7768502017911487, 5.4715988129376]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.6648084522908562, -1.0117271091851308, 0.5948074556353617, 5.1114429597030835]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.886635367366002, -6.968786554939622, -5.2111104808291, -3.9518641564503127]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.061332758480034, -8.143089610468905, -6.559787450699275, -4.303945368991549]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8563940590086607, -2.227689474541444, -1.6891420408596793, -1.392946332046619]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3315783523159728, -2.5745329218147237, -2.077170056107716, -1.468216378211284]}}