{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:30.266949", "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": "2018-Nov-12_to_2018-Nov-15_94.0_50.0"}, "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": 2018110000446}, "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": "November 12 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 15 2018"}, "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": 64700.584039708476}, "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": ["Mongolia", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia"]}, "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": 50.0}, "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": 94.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "94.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 92.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 97.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[94.5, 51.75], [95.03, 51.53], [95.25, 51.0], [95.03, 50.47], [94.5, 50.25], [93.97, 50.47], [93.75, 51.0], [93.97, 51.53], [94.5, 51.75]]]]}, "2018-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.47, 51.03], [93.0, 51.25], [93.25, 51.15], [93.5, 51.25], [93.75, 51.15], [93.82, 51.18], [93.97, 51.53], [94.5, 51.75], [95.03, 51.53], [95.25, 51.0], [95.15, 50.75], [95.18, 50.68], [95.53, 50.53], [95.68, 50.18], [95.75, 50.15], [96.0, 50.25], [96.25, 50.15], [96.5, 50.25], [96.75, 50.15], [97.0, 50.25], [97.53, 50.03], [97.75, 49.5], [97.65, 49.25], [97.75, 49.0], [97.65, 48.75], [97.75, 48.5], [97.53, 47.97], [97.18, 47.82], [97.15, 47.75], [97.25, 47.5], [97.03, 46.97], [96.5, 46.75], [96.25, 46.85], [96.0, 46.75], [95.75, 46.85], [95.5, 46.75], [94.97, 46.97], [94.82, 47.32], [94.75, 47.35], [94.5, 47.25], [93.97, 47.47], [93.75, 48.0], [93.96, 48.5], [93.8, 48.88], [93.5, 48.75], [92.97, 48.97], [92.82, 49.32], [92.47, 49.47], [92.25, 50.0], [92.35, 50.25], [92.25, 50.5], [92.47, 51.03]]]]}, "2018-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.47, 51.03], [93.0, 51.25], [93.25, 51.15], [93.5, 51.25], [93.75, 51.15], [93.82, 51.18], [93.97, 51.53], [94.5, 51.75], [95.03, 51.53], [95.25, 51.0], [95.15, 50.75], [95.18, 50.68], [95.53, 50.53], [95.68, 50.18], [95.75, 50.15], [96.0, 50.25], [96.25, 50.15], [96.5, 50.25], [96.75, 50.15], [97.0, 50.25], [97.53, 50.03], [97.75, 49.5], [97.65, 49.25], [97.75, 49.0], [97.65, 48.75], [97.75, 48.5], [97.53, 47.97], [97.18, 47.82], [97.15, 47.75], [97.25, 47.5], [97.03, 46.97], [96.5, 46.75], [96.25, 46.85], [96.0, 46.75], [95.75, 46.85], [95.5, 46.75], [94.97, 46.97], [94.82, 47.32], [94.75, 47.35], [94.5, 47.25], [93.97, 47.47], [93.75, 48.0], [93.96, 48.5], [93.8, 48.88], [93.5, 48.75], [92.97, 48.97], [92.82, 49.32], [92.47, 49.47], [92.25, 50.0], [92.35, 50.25], [92.25, 50.5], [92.47, 51.03]]]]}, "2018-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.47, 51.03], [93.0, 51.25], [93.25, 51.15], [93.5, 51.25], [93.75, 51.15], [94.0, 51.25], [94.25, 51.15], [94.5, 51.25], [95.03, 51.03], [95.18, 50.68], [95.53, 50.53], [95.68, 50.18], [95.75, 50.15], [96.0, 50.25], [96.25, 50.15], [96.5, 50.25], [96.75, 50.15], [97.0, 50.25], [97.53, 50.03], [97.75, 49.5], [97.65, 49.25], [97.75, 49.0], [97.65, 48.75], [97.75, 48.5], [97.53, 47.97], [97.18, 47.82], [97.15, 47.75], [97.25, 47.5], [97.03, 46.97], [96.5, 46.75], [96.25, 46.85], [96.0, 46.75], [95.75, 46.85], [95.5, 46.75], [94.97, 46.97], [94.82, 47.32], [94.75, 47.35], [94.5, 47.25], [93.97, 47.47], [93.75, 48.0], [93.96, 48.5], [93.8, 48.88], [93.5, 48.75], [92.97, 48.97], [92.82, 49.32], [92.47, 49.47], [92.25, 50.0], [92.35, 50.25], [92.25, 50.5], [92.47, 51.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -13.90059862300538}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -9.169276413325115}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-19.63833265916685, -20.878143504590213, -22.26945832322474, -21.091973708383364]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-19.63833265916685, -26.378601289711327, -29.838705493601225, -26.730126730476258]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.318538676249148, -9.175137512692245, -9.978840895536763, -8.387247998052691]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.318538676249148, -11.352686278569848, -13.90059862300538, -10.330922192469274]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4984218935431601, -1.7389902285050831, -1.881438293358707, -1.621729138587987]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4984218935431601, -2.1249156735174757, -2.2360346568325054, -1.978627457102925]}}