{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:13.712400", "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": "2017-Jun-12_to_2017-Jun-16_110.5_30.5"}, "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": 2017060000376}, "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 12 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 16 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 53644.28166354538}, "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": 30.5}, "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": 110.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "110.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 109.25}, "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": 28.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.47, 31.03], [110.0, 31.25], [110.25, 31.15], [110.5, 31.25], [111.03, 31.03], [111.25, 30.5], [111.15, 30.25], [111.25, 30.0], [111.03, 29.47], [110.5, 29.25], [110.25, 29.35], [110.0, 29.25], [109.47, 29.47], [109.25, 30.0], [109.35, 30.25], [109.25, 30.5], [109.47, 31.03]]]]}, "2017-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 30.5], [108.97, 31.03], [109.5, 31.25], [109.75, 31.15], [110.0, 31.25], [110.25, 31.15], [110.5, 31.25], [110.75, 31.15], [111.0, 31.25], [111.25, 31.15], [111.5, 31.25], [112.03, 31.03], [112.18, 30.68], [112.25, 30.65], [112.5, 30.75], [113.03, 30.53], [113.25, 30.0], [113.03, 29.47], [112.68, 29.32], [112.53, 28.97], [112.18, 28.82], [112.03, 28.47], [111.5, 28.25], [111.25, 28.35], [111.0, 28.25], [110.75, 28.35], [110.5, 28.25], [110.25, 28.35], [110.0, 28.25], [109.47, 28.47], [109.25, 29.0], [109.35, 29.25], [109.25, 29.5], [109.35, 29.75], [109.32, 29.82], [108.97, 29.97], [108.75, 30.5]]]]}, "2017-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 30.5], [108.97, 31.03], [109.5, 31.25], [109.75, 31.15], [110.0, 31.25], [110.25, 31.15], [110.5, 31.25], [110.75, 31.15], [111.0, 31.25], [111.25, 31.15], [111.5, 31.25], [112.03, 31.03], [112.18, 30.68], [112.25, 30.65], [112.5, 30.75], [113.03, 30.53], [113.25, 30.0], [113.03, 29.47], [112.68, 29.32], [112.53, 28.97], [112.18, 28.82], [112.03, 28.47], [111.5, 28.25], [111.25, 28.35], [111.0, 28.25], [110.75, 28.35], [110.5, 28.25], [110.25, 28.35], [110.0, 28.25], [109.47, 28.47], [109.25, 29.0], [109.35, 29.25], [109.25, 29.5], [109.35, 29.75], [109.32, 29.82], [108.97, 29.97], [108.75, 30.5]]]]}, "2017-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 30.5], [108.97, 31.03], [109.5, 31.25], [109.75, 31.15], [110.0, 31.25], [110.25, 31.15], [110.5, 31.25], [110.75, 31.15], [111.0, 31.25], [111.25, 31.15], [111.5, 31.25], [112.03, 31.03], [112.18, 30.68], [112.25, 30.65], [112.5, 30.75], [113.03, 30.53], [113.25, 30.0], [113.03, 29.47], [112.68, 29.32], [112.53, 28.97], [112.18, 28.82], [112.03, 28.47], [111.5, 28.25], [111.25, 28.35], [111.0, 28.25], [110.75, 28.35], [110.5, 28.25], [110.25, 28.35], [110.0, 28.25], [109.47, 28.47], [109.25, 29.0], [109.35, 29.25], [109.25, 29.5], [109.35, 29.75], [109.32, 29.82], [108.97, 29.97], [108.75, 30.5]]]]}, "2017-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.25, 30.0], [110.47, 30.53], [111.0, 30.75], [111.25, 30.65], [111.5, 30.75], [112.03, 30.53], [112.18, 30.18], [112.53, 30.03], [112.75, 29.5], [112.53, 28.97], [112.18, 28.82], [112.03, 28.47], [111.5, 28.25], [111.25, 28.35], [111.0, 28.25], [110.75, 28.35], [110.5, 28.25], [109.97, 28.47], [109.75, 29.0], [109.97, 29.53], [110.32, 29.68], [110.35, 29.75], [110.25, 30.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.158391231691496}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.552585609220265}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.466520482293618, 20.141291661527646, 19.39294104195193, 17.29256996691413, 21.249823407417352]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.162837038163502, 16.98277378277959, 15.459840276558452, 14.237460323537505, 20.012508203045684]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.0588921270245635, -3.371971674018772, -4.283587824854285, -6.550042709789656, -3.9298188978133197]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.4432300464693526, -3.8391147360811146, -5.486428224258134, -7.158391231691496, -4.536216869081784]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4331916546468209, -1.4918117741703383, -1.855209673906661, -2.7787209813631213, -1.5567305809854006]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5210225931606518, -1.6919531729882065, -2.3729007758168255, -2.926112883384432, -1.757903598369742]}}