{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:21.071669", "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-Dec-04_to_2015-Dec-09_97.0_23.0"}, "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": 2015120000141}, "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": "December 04 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 09 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 137223.13805910407}, "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", "Myanmar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.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": 23.0}, "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": 97.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "97.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 96.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 100.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.75, 22.0], [95.97, 22.53], [96.32, 22.68], [96.35, 22.75], [96.25, 23.0], [96.47, 23.53], [97.0, 23.75], [97.3, 23.63], [97.35, 23.75], [97.25, 24.0], [97.47, 24.53], [98.0, 24.75], [98.25, 24.65], [98.5, 24.75], [98.75, 24.65], [98.82, 24.68], [98.97, 25.03], [99.5, 25.25], [100.03, 25.03], [100.18, 24.68], [100.53, 24.53], [100.68, 24.18], [101.03, 24.03], [101.25, 23.5], [101.15, 23.25], [101.25, 23.0], [101.03, 22.47], [100.68, 22.32], [100.65, 22.25], [100.75, 22.0], [100.53, 21.47], [100.0, 21.25], [99.75, 21.35], [99.5, 21.25], [99.25, 21.35], [99.18, 21.32], [99.15, 21.25], [99.25, 21.0], [99.03, 20.47], [98.68, 20.32], [98.65, 20.25], [98.75, 20.0], [98.53, 19.47], [98.0, 19.25], [97.75, 19.35], [97.5, 19.25], [97.25, 19.35], [97.0, 19.25], [96.47, 19.47], [96.25, 20.0], [96.35, 20.25], [96.25, 20.5], [96.35, 20.75], [96.25, 21.0], [96.35, 21.25], [96.32, 21.32], [95.97, 21.47], [95.75, 22.0]]]]}, "2015-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.75, 22.0], [95.97, 22.53], [96.32, 22.68], [96.35, 22.75], [96.25, 23.0], [96.47, 23.53], [97.0, 23.75], [97.3, 23.63], [97.35, 23.75], [97.25, 24.0], [97.47, 24.53], [98.0, 24.75], [98.25, 24.65], [98.5, 24.75], [98.75, 24.65], [98.82, 24.68], [98.97, 25.03], [99.5, 25.25], [100.03, 25.03], [100.18, 24.68], [100.53, 24.53], [100.68, 24.18], [101.03, 24.03], [101.25, 23.5], [101.15, 23.25], [101.25, 23.0], [101.03, 22.47], [100.68, 22.32], [100.65, 22.25], [100.75, 22.0], [100.53, 21.47], [100.0, 21.25], [99.75, 21.35], [99.5, 21.25], [99.25, 21.35], [99.18, 21.32], [99.15, 21.25], [99.25, 21.0], [99.03, 20.47], [98.68, 20.32], [98.65, 20.25], [98.75, 20.0], [98.53, 19.47], [98.0, 19.25], [97.75, 19.35], [97.5, 19.25], [97.25, 19.35], [97.0, 19.25], [96.47, 19.47], [96.25, 20.0], [96.35, 20.25], [96.25, 20.5], [96.35, 20.75], [96.25, 21.0], [96.35, 21.25], [96.32, 21.32], [95.97, 21.47], [95.75, 22.0]]]]}, "2015-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.75, 22.0], [95.97, 22.53], [96.32, 22.68], [96.35, 22.75], [96.25, 23.0], [96.47, 23.53], [97.0, 23.75], [97.3, 23.63], [97.35, 23.75], [97.25, 24.0], [97.47, 24.53], [98.0, 24.75], [98.25, 24.65], [98.5, 24.75], [98.75, 24.65], [98.82, 24.68], [98.97, 25.03], [99.5, 25.25], [100.03, 25.03], [100.18, 24.68], [100.53, 24.53], [100.68, 24.18], [101.03, 24.03], [101.25, 23.5], [101.15, 23.25], [101.25, 23.0], [101.03, 22.47], [100.68, 22.32], [100.65, 22.25], [100.75, 22.0], [100.53, 21.47], [100.0, 21.25], [99.75, 21.35], [99.5, 21.25], [99.25, 21.35], [99.18, 21.32], [99.15, 21.25], [99.25, 21.0], [99.03, 20.47], [98.68, 20.32], [98.65, 20.25], [98.75, 20.0], [98.53, 19.47], [98.0, 19.25], [97.75, 19.35], [97.5, 19.25], [97.25, 19.35], [97.0, 19.25], [96.47, 19.47], [96.25, 20.0], [96.35, 20.25], [96.25, 20.5], [96.35, 20.75], [96.25, 21.0], [96.35, 21.25], [96.32, 21.32], [95.97, 21.47], [95.75, 22.0]]]]}, "2015-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.47, 22.47], [96.25, 23.0], [96.47, 23.53], [97.0, 23.75], [97.5, 23.54], [98.0, 23.75], [98.53, 23.53], [98.75, 23.0], [98.53, 22.47], [98.0, 22.25], [97.5, 22.46], [97.0, 22.25], [96.47, 22.47]]]]}, "2015-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.0, 23.75], [97.53, 23.53], [97.75, 23.0], [97.53, 22.47], [97.0, 22.25], [96.47, 22.47], [96.25, 23.0], [96.47, 23.53], [97.0, 23.75]]]]}, "2015-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.0, 23.75], [97.53, 23.53], [97.75, 23.0], [97.53, 22.47], [97.0, 22.25], [96.47, 22.47], [96.25, 23.0], [96.47, 23.53], [97.0, 23.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.703066769332963}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1097573352070063}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.58611589362016, 13.475141265198488, 13.390313526761304, 14.156137042302532, 13.866857209695866, 13.815453115964772]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.457835826612211, 9.922713361458307, 9.041989888863498, 13.790805512047484, 13.866857209695866, 13.815453115964772]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.095749326122965, -3.144618450159777, -3.177540974227501, -2.142476390690888, -1.955625809571984, -1.9438869951915194]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.883265842131948, -4.703066769332963, -3.9702937426666836, -2.2186321145240413, -1.955625809571984, -1.9438869951915194]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.887956037928151, -1.8752077711349517, -1.8609098535646618, -1.4583523691465705, -1.4836673873838715, -1.5119737598874967]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.422474727860623, -2.4214428251040974, -2.486200704656439, -1.527721430877689, -1.4836673873838715, -1.5119737598874967]}}