{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:43.311792", "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": "2014-Feb-18_to_2014-Feb-20_108.5_18.5"}, "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": 2014020000809}, "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": "February 18 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 20 2014"}, "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": 89915.67073616851}, "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", "Vietnam"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.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": ["South China Sea"]}, "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": 18.5}, "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": 108.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "108.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 106.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 111.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.82, 21.18], [106.97, 21.53], [107.5, 21.75], [108.03, 21.53], [108.18, 21.18], [108.25, 21.15], [108.32, 21.18], [108.47, 21.53], [109.0, 21.75], [109.25, 21.65], [109.5, 21.75], [109.75, 21.65], [109.82, 21.68], [109.97, 22.03], [110.32, 22.18], [110.47, 22.53], [111.0, 22.75], [111.53, 22.53], [111.75, 22.0], [111.54, 21.5], [111.75, 21.0], [111.53, 20.47], [111.18, 20.32], [111.03, 19.97], [110.68, 19.82], [110.53, 19.47], [110.0, 19.25], [109.75, 19.35], [109.68, 19.32], [109.53, 18.97], [109.18, 18.82], [109.15, 18.75], [109.25, 18.5], [109.03, 17.97], [108.5, 17.75], [107.97, 17.97], [107.82, 18.32], [107.75, 18.35], [107.5, 18.25], [106.97, 18.47], [106.75, 19.0], [106.85, 19.25], [106.82, 19.32], [106.75, 19.35], [106.5, 19.25], [105.97, 19.47], [105.75, 20.0], [105.97, 20.53], [106.32, 20.68], [106.47, 21.03], [106.82, 21.18]]]]}, "2014-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.82, 21.18], [106.97, 21.53], [107.5, 21.75], [108.03, 21.53], [108.18, 21.18], [108.25, 21.15], [108.32, 21.18], [108.47, 21.53], [109.0, 21.75], [109.25, 21.65], [109.5, 21.75], [109.75, 21.65], [109.82, 21.68], [109.97, 22.03], [110.32, 22.18], [110.47, 22.53], [111.0, 22.75], [111.53, 22.53], [111.75, 22.0], [111.54, 21.5], [111.75, 21.0], [111.53, 20.47], [111.18, 20.32], [111.03, 19.97], [110.68, 19.82], [110.53, 19.47], [110.0, 19.25], [109.75, 19.35], [109.68, 19.32], [109.53, 18.97], [109.18, 18.82], [109.15, 18.75], [109.25, 18.5], [109.03, 17.97], [108.5, 17.75], [107.97, 17.97], [107.82, 18.32], [107.75, 18.35], [107.5, 18.25], [106.97, 18.47], [106.75, 19.0], [106.85, 19.25], [106.82, 19.32], [106.75, 19.35], [106.5, 19.25], [105.97, 19.47], [105.75, 20.0], [105.97, 20.53], [106.32, 20.68], [106.47, 21.03], [106.82, 21.18]]]]}, "2014-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.82, 21.18], [106.97, 21.53], [107.5, 21.75], [108.03, 21.53], [108.18, 21.18], [108.25, 21.15], [108.32, 21.18], [108.47, 21.53], [109.0, 21.75], [109.25, 21.65], [109.5, 21.75], [109.75, 21.65], [109.82, 21.68], [109.97, 22.03], [110.32, 22.18], [110.47, 22.53], [111.0, 22.75], [111.53, 22.53], [111.75, 22.0], [111.54, 21.5], [111.75, 21.0], [111.53, 20.47], [111.18, 20.32], [111.03, 19.97], [110.68, 19.82], [110.53, 19.47], [110.0, 19.25], [109.75, 19.35], [109.68, 19.32], [109.53, 18.97], [109.18, 18.82], [109.15, 18.75], [109.25, 18.5], [109.03, 17.97], [108.5, 17.75], [107.97, 17.97], [107.82, 18.32], [107.75, 18.35], [107.5, 18.25], [106.97, 18.47], [106.75, 19.0], [106.85, 19.25], [106.82, 19.32], [106.75, 19.35], [106.5, 19.25], [105.97, 19.47], [105.75, 20.0], [105.97, 20.53], [106.32, 20.68], [106.47, 21.03], [106.82, 21.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.403392131824376}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.074652030493989}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.168048672707982, 12.335060451997094, 15.499657927916644]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.54276618717887, 6.9673562699925355, 11.826496183828397]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.22976943467019, -7.07009312664848, -3.924093530163297]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.229115404286006, -10.403392131824376, -5.591390669868474]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6957426965212212, -2.8847837034976602, -1.6420099137210356]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1609814829984204, -4.187313716227315, -2.724181816210602]}}