{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:57.584510", "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": "2012-Jul-22_to_2012-Jul-25_105.0_27.5"}, "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": 2012070001179}, "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": "July 22 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 25 2012"}, "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": 68552.82963322753}, "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": 27.5}, "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": 105.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "105.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 103.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 107.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.75, 27.5], [102.97, 28.03], [103.5, 28.25], [103.75, 28.15], [104.0, 28.25], [104.25, 28.15], [104.32, 28.18], [104.47, 28.53], [104.82, 28.68], [104.97, 29.03], [105.5, 29.25], [105.75, 29.15], [105.82, 29.18], [105.97, 29.53], [106.5, 29.75], [107.03, 29.53], [107.25, 29.0], [107.15, 28.75], [107.25, 28.5], [107.15, 28.25], [107.25, 28.0], [107.15, 27.75], [107.25, 27.5], [107.03, 26.97], [106.68, 26.82], [106.53, 26.47], [106.0, 26.25], [105.75, 26.35], [105.68, 26.32], [105.53, 25.97], [105.0, 25.75], [104.47, 25.97], [104.32, 26.32], [104.25, 26.35], [104.0, 26.25], [103.47, 26.47], [103.32, 26.82], [102.97, 26.97], [102.75, 27.5]]]]}, "2012-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.75, 27.5], [102.97, 28.03], [103.5, 28.25], [103.75, 28.15], [104.0, 28.25], [104.25, 28.15], [104.32, 28.18], [104.47, 28.53], [104.82, 28.68], [104.97, 29.03], [105.5, 29.25], [105.75, 29.15], [105.82, 29.18], [105.97, 29.53], [106.5, 29.75], [107.03, 29.53], [107.25, 29.0], [107.15, 28.75], [107.25, 28.5], [107.15, 28.25], [107.25, 28.0], [107.15, 27.75], [107.18, 27.68], [107.53, 27.53], [107.75, 27.0], [107.53, 26.47], [107.0, 26.25], [106.75, 26.35], [106.68, 26.32], [106.53, 25.97], [106.0, 25.75], [105.5, 25.96], [105.18, 25.82], [105.03, 25.47], [104.5, 25.25], [103.97, 25.47], [103.75, 26.0], [103.88, 26.3], [103.47, 26.47], [103.32, 26.82], [102.97, 26.97], [102.75, 27.5]]]]}, "2012-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.75, 27.5], [102.97, 28.03], [103.5, 28.25], [103.75, 28.15], [104.0, 28.25], [104.25, 28.15], [104.32, 28.18], [104.47, 28.53], [104.82, 28.68], [104.97, 29.03], [105.5, 29.25], [105.75, 29.15], [105.82, 29.18], [105.97, 29.53], [106.5, 29.75], [107.03, 29.53], [107.25, 29.0], [107.15, 28.75], [107.25, 28.5], [107.15, 28.25], [107.25, 28.0], [107.15, 27.75], [107.18, 27.68], [107.53, 27.53], [107.75, 27.0], [107.53, 26.47], [107.0, 26.25], [106.75, 26.35], [106.68, 26.32], [106.53, 25.97], [106.0, 25.75], [105.5, 25.96], [105.18, 25.82], [105.03, 25.47], [104.5, 25.25], [103.97, 25.47], [103.75, 26.0], [103.88, 26.3], [103.47, 26.47], [103.32, 26.82], [102.97, 26.97], [102.75, 27.5]]]]}, "2012-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.75, 27.5], [102.97, 28.03], [103.5, 28.25], [103.75, 28.15], [104.0, 28.25], [104.25, 28.15], [104.32, 28.18], [104.47, 28.53], [104.82, 28.68], [104.97, 29.03], [105.5, 29.25], [105.75, 29.15], [106.0, 29.25], [106.53, 29.03], [106.75, 28.5], [106.54, 28.0], [106.68, 27.68], [106.75, 27.65], [107.0, 27.75], [107.53, 27.53], [107.75, 27.0], [107.53, 26.47], [107.0, 26.25], [106.75, 26.35], [106.68, 26.32], [106.53, 25.97], [106.0, 25.75], [105.5, 25.96], [105.18, 25.82], [105.03, 25.47], [104.5, 25.25], [103.97, 25.47], [103.75, 26.0], [103.88, 26.3], [103.47, 26.47], [103.32, 26.82], [102.97, 26.97], [102.75, 27.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.910180115565481}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.2952306776679503}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.49041356395253, 19.31173573944227, 20.197872721708165, 20.141474567591104]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.00027542452466, 15.599718900902019, 16.854960671080676, 16.731463550252954]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.6328528323875546, -3.8724714558348956, -3.055112513782451, -2.519324147360558]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.910180115565481, -5.074488494904244, -4.01041675841077, -3.405992430949084]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.982684040842003, -2.136058571764171, -1.723322949677115, -1.5462233089853465]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6945912370587504, -2.547034968929725, -2.114155220838811, -1.7283837388679768]}}