{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:08.411549", "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": "2015-Jun-10_to_2015-Jun-12_112.0_41.5"}, "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": 2015060000374}, "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 10 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 12 2015"}, "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": 63874.305360167615}, "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", "Mongolia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "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": 41.5}, "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": 112.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "112.0\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": 113.75}, "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": 44.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.75, 44.0], [109.97, 44.53], [110.5, 44.75], [110.75, 44.65], [111.0, 44.75], [111.25, 44.65], [111.5, 44.75], [111.75, 44.65], [112.0, 44.75], [112.53, 44.53], [112.75, 44.0], [112.65, 43.75], [112.68, 43.68], [112.75, 43.65], [113.0, 43.75], [113.53, 43.53], [113.75, 43.0], [113.65, 42.75], [113.68, 42.68], [114.03, 42.53], [114.25, 42.0], [114.15, 41.75], [114.25, 41.5], [114.15, 41.25], [114.25, 41.0], [114.15, 40.75], [114.25, 40.5], [114.03, 39.97], [113.5, 39.75], [112.97, 39.97], [112.82, 40.32], [112.75, 40.35], [112.5, 40.25], [111.97, 40.47], [111.82, 40.82], [111.47, 40.97], [111.32, 41.32], [110.97, 41.47], [110.75, 42.0], [110.85, 42.25], [110.75, 42.5], [110.85, 42.75], [110.82, 42.82], [110.47, 42.97], [110.32, 43.32], [109.97, 43.47], [109.75, 44.0]]]]}, "2015-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.75, 44.0], [109.97, 44.53], [110.5, 44.75], [110.75, 44.65], [111.0, 44.75], [111.25, 44.65], [111.5, 44.75], [111.75, 44.65], [112.0, 44.75], [112.53, 44.53], [112.75, 44.0], [112.65, 43.75], [112.68, 43.68], [112.75, 43.65], [113.0, 43.75], [113.53, 43.53], [113.75, 43.0], [113.65, 42.75], [113.68, 42.68], [114.03, 42.53], [114.25, 42.0], [114.15, 41.75], [114.25, 41.5], [114.15, 41.25], [114.25, 41.0], [114.15, 40.75], [114.25, 40.5], [114.03, 39.97], [113.5, 39.75], [112.97, 39.97], [112.82, 40.32], [112.75, 40.35], [112.5, 40.25], [111.97, 40.47], [111.82, 40.82], [111.47, 40.97], [111.32, 41.32], [110.97, 41.47], [110.75, 42.0], [110.85, 42.25], [110.75, 42.5], [110.85, 42.75], [110.82, 42.82], [110.47, 42.97], [110.32, 43.32], [109.97, 43.47], [109.75, 44.0]]]]}, "2015-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.75, 44.0], [109.97, 44.53], [110.5, 44.75], [110.75, 44.65], [111.0, 44.75], [111.25, 44.65], [111.5, 44.75], [111.75, 44.65], [112.0, 44.75], [112.53, 44.53], [112.75, 44.0], [112.65, 43.75], [112.68, 43.68], [112.75, 43.65], [113.0, 43.75], [113.53, 43.53], [113.75, 43.0], [113.65, 42.75], [113.68, 42.68], [114.03, 42.53], [114.25, 42.0], [114.15, 41.75], [114.25, 41.5], [114.15, 41.25], [114.25, 41.0], [114.15, 40.75], [114.25, 40.5], [114.03, 39.97], [113.5, 39.75], [112.97, 39.97], [112.82, 40.32], [112.75, 40.35], [112.5, 40.25], [111.97, 40.47], [111.82, 40.82], [111.47, 40.97], [111.32, 41.32], [110.97, 41.47], [110.75, 42.0], [110.85, 42.25], [110.75, 42.5], [110.85, 42.75], [110.82, 42.82], [110.47, 42.97], [110.32, 43.32], [109.97, 43.47], [109.75, 44.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.107542182761108}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.391740940810618}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.392788108911134, 13.46022773460163, 12.569909311189406]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.111107088123106, 10.390240790266887, 8.979637911182465]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.587357824347677, -5.7235577283608245, -6.864307269723357]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.107542182761108, -6.633299881569144, -8.056396717937446]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6559008753501814, -1.4685046755752007, -1.762909419921942]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9781992151384191, -1.6317182631757658, -2.0509802928326217]}}