{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:00.729446", "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-Oct-30_to_2015-Nov-04_87.5_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": 2015100000757}, "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": "October 30 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 04 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": 420555.6447641009}, "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": ["Bangladesh", "China", "India", "Myanmar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Bay-of-Bengal", "S.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": ["Bay of Bengal"]}, "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": 87.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "87.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 84.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 99.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.47, 19.03], [84.88, 19.2], [84.75, 19.5], [84.97, 20.03], [85.5, 20.25], [85.75, 20.15], [86.0, 20.25], [86.25, 20.15], [86.5, 20.25], [86.75, 20.15], [87.0, 20.25], [87.25, 20.15], [87.5, 20.25], [88.03, 20.03], [88.25, 19.5], [88.15, 19.25], [88.18, 19.18], [88.53, 19.03], [88.75, 18.5], [88.53, 17.97], [88.18, 17.82], [88.03, 17.47], [87.5, 17.25], [87.25, 17.35], [87.0, 17.25], [86.5, 17.46], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [84.97, 17.47], [84.82, 17.82], [84.47, 17.97], [84.25, 18.5], [84.47, 19.03]]], [[[88.97, 22.03], [89.5, 22.25], [90.0, 22.04], [90.5, 22.25], [90.75, 22.15], [91.0, 22.25], [91.25, 22.15], [91.32, 22.18], [91.47, 22.53], [91.82, 22.68], [91.97, 23.03], [92.5, 23.25], [92.75, 23.15], [93.0, 23.25], [93.53, 23.03], [93.68, 22.68], [94.0, 22.54], [94.5, 22.75], [94.75, 22.65], [94.82, 22.68], [94.97, 23.03], [95.32, 23.18], [95.47, 23.53], [96.0, 23.75], [96.5, 23.54], [96.88, 23.7], [96.75, 24.0], [96.85, 24.25], [96.75, 24.5], [96.85, 24.75], [96.75, 25.0], [96.97, 25.53], [97.5, 25.75], [98.0, 25.54], [98.5, 25.75], [99.03, 25.53], [99.25, 25.0], [99.03, 24.47], [98.68, 24.32], [98.53, 23.97], [98.18, 23.82], [98.03, 23.47], [97.63, 23.3], [97.75, 23.0], [97.65, 22.75], [97.75, 22.5], [97.65, 22.25], [97.75, 22.0], [97.53, 21.47], [97.0, 21.25], [96.75, 21.35], [96.5, 21.25], [96.25, 21.35], [96.18, 21.32], [96.15, 21.25], [96.25, 21.0], [96.03, 20.47], [95.5, 20.25], [95.25, 20.35], [95.18, 20.32], [95.03, 19.97], [94.68, 19.82], [94.53, 19.47], [94.0, 19.25], [93.5, 19.46], [93.0, 19.25], [92.47, 19.47], [92.32, 19.82], [92.25, 19.85], [92.0, 19.75], [91.75, 19.85], [91.5, 19.75], [91.25, 19.85], [91.0, 19.75], [90.75, 19.85], [90.5, 19.75], [89.97, 19.97], [89.82, 20.32], [89.47, 20.47], [89.32, 20.82], [88.97, 20.97], [88.75, 21.5], [88.97, 22.03]]]]}, "2015-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.75, 18.5], [83.97, 19.03], [84.5, 19.25], [84.75, 19.15], [84.88, 19.2], [84.75, 19.5], [84.97, 20.03], [85.5, 20.25], [85.75, 20.15], [86.0, 20.25], [86.25, 20.15], [86.5, 20.25], [86.75, 20.15], [87.0, 20.25], [87.25, 20.15], [87.5, 20.25], [88.03, 20.03], [88.25, 19.5], [88.15, 19.25], [88.18, 19.18], [88.53, 19.03], [88.75, 18.5], [88.53, 17.97], [88.18, 17.82], [88.03, 17.47], [87.5, 17.25], [87.25, 17.35], [87.0, 17.25], [86.75, 17.35], [86.5, 17.25], [86.25, 17.35], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [84.97, 17.47], [84.82, 17.82], [84.75, 17.85], [84.5, 17.75], [83.97, 17.97], [83.75, 18.5]]], [[[88.25, 21.5], [88.47, 22.03], [89.0, 22.25], [89.25, 22.15], [89.5, 22.25], [90.0, 22.04], [90.38, 22.2], [90.25, 22.5], [90.47, 23.03], [91.0, 23.25], [91.25, 23.15], [91.5, 23.25], [92.0, 23.04], [92.5, 23.25], [92.75, 23.15], [93.0, 23.25], [93.53, 23.03], [93.68, 22.68], [93.8, 22.63], [93.85, 22.75], [93.75, 23.0], [93.97, 23.53], [94.5, 23.75], [94.75, 23.65], [94.82, 23.68], [94.85, 23.75], [94.75, 24.0], [94.97, 24.53], [95.32, 24.68], [95.47, 25.03], [96.0, 25.25], [96.25, 25.15], [96.32, 25.18], [96.47, 25.53], [97.0, 25.75], [97.25, 25.65], [97.5, 25.75], [98.0, 25.54], [98.5, 25.75], [98.75, 25.65], [99.0, 25.75], [99.53, 25.53], [99.75, 25.0], [99.65, 24.75], [99.75, 24.5], [99.65, 24.25], [99.75, 24.0], [99.53, 23.47], [99.18, 23.32], [99.03, 22.97], [98.68, 22.82], [98.53, 22.47], [98.18, 22.32], [98.03, 21.97], [97.68, 21.82], [97.53, 21.47], [97.18, 21.32], [97.03, 20.97], [96.68, 20.82], [96.65, 20.75], [96.75, 20.5], [96.65, 20.25], [96.75, 20.0], [96.53, 19.47], [96.18, 19.32], [96.03, 18.97], [95.5, 18.75], [95.25, 18.85], [95.0, 18.75], [94.75, 18.85], [94.5, 18.75], [93.97, 18.97], [93.82, 19.32], [93.75, 19.35], [93.5, 19.25], [93.25, 19.35], [93.0, 19.25], [92.47, 19.47], [92.32, 19.82], [92.25, 19.85], [92.0, 19.75], [91.75, 19.85], [91.5, 19.75], [91.25, 19.85], [91.0, 19.75], [90.75, 19.85], [90.5, 19.75], [89.97, 19.97], [89.82, 20.32], [89.47, 20.47], [89.32, 20.82], [89.25, 20.85], [89.0, 20.75], [88.47, 20.97], [88.25, 21.5]]]]}, "2015-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.75, 18.5], [83.97, 19.03], [84.5, 19.25], [84.75, 19.15], [84.88, 19.2], [84.75, 19.5], [84.97, 20.03], [85.5, 20.25], [85.75, 20.15], [86.0, 20.25], [86.25, 20.15], [86.5, 20.25], [86.75, 20.15], [87.0, 20.25], [87.25, 20.15], [87.5, 20.25], [88.03, 20.03], [88.25, 19.5], [88.15, 19.25], [88.18, 19.18], [88.53, 19.03], [88.75, 18.5], [88.53, 17.97], [88.18, 17.82], [88.03, 17.47], [87.5, 17.25], [87.25, 17.35], [87.0, 17.25], [86.75, 17.35], [86.5, 17.25], [86.25, 17.35], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [84.97, 17.47], [84.82, 17.82], [84.75, 17.85], [84.5, 17.75], [83.97, 17.97], [83.75, 18.5]]], [[[88.25, 21.5], [88.47, 22.03], [89.0, 22.25], [89.25, 22.15], [89.5, 22.25], [90.0, 22.04], [90.38, 22.2], [90.25, 22.5], [90.47, 23.03], [91.0, 23.25], [91.25, 23.15], [91.5, 23.25], [92.0, 23.04], [92.5, 23.25], [92.75, 23.15], [93.0, 23.25], [93.53, 23.03], [93.68, 22.68], [93.8, 22.63], [93.85, 22.75], [93.75, 23.0], [93.97, 23.53], [94.5, 23.75], [94.75, 23.65], [94.82, 23.68], [94.85, 23.75], [94.75, 24.0], [94.97, 24.53], [95.32, 24.68], [95.47, 25.03], [96.0, 25.25], [96.25, 25.15], [96.32, 25.18], [96.47, 25.53], [97.0, 25.75], [97.25, 25.65], [97.5, 25.75], [98.0, 25.54], [98.5, 25.75], [98.75, 25.65], [99.0, 25.75], [99.53, 25.53], [99.75, 25.0], [99.65, 24.75], [99.75, 24.5], [99.65, 24.25], [99.75, 24.0], [99.53, 23.47], [99.18, 23.32], [99.03, 22.97], [98.68, 22.82], [98.53, 22.47], [98.18, 22.32], [98.03, 21.97], [97.68, 21.82], [97.53, 21.47], [97.18, 21.32], [97.03, 20.97], [96.68, 20.82], [96.65, 20.75], [96.75, 20.5], [96.65, 20.25], [96.75, 20.0], [96.65, 19.75], [96.75, 19.5], [96.53, 18.97], [96.18, 18.82], [96.03, 18.47], [95.68, 18.32], [95.53, 17.97], [95.0, 17.75], [94.47, 17.97], [94.25, 18.5], [94.35, 18.75], [94.32, 18.82], [93.97, 18.97], [93.82, 19.32], [93.75, 19.35], [93.5, 19.25], [93.25, 19.35], [93.0, 19.25], [92.47, 19.47], [92.32, 19.82], [92.25, 19.85], [92.0, 19.75], [91.75, 19.85], [91.68, 19.82], [91.53, 19.47], [91.0, 19.25], [90.75, 19.35], [90.5, 19.25], [89.97, 19.47], [89.75, 20.0], [89.85, 20.25], [89.82, 20.32], [89.47, 20.47], [89.32, 20.82], [89.25, 20.85], [89.0, 20.75], [88.47, 20.97], [88.25, 21.5]]]]}, "2015-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.75, 18.5], [83.97, 19.03], [84.5, 19.25], [84.75, 19.15], [84.88, 19.2], [84.75, 19.5], [84.97, 20.03], [85.5, 20.25], [85.75, 20.15], [86.0, 20.25], [86.25, 20.15], [86.5, 20.25], [86.75, 20.15], [87.0, 20.25], [87.25, 20.15], [87.5, 20.25], [88.03, 20.03], [88.2, 19.63], [88.5, 19.75], [88.75, 19.65], [88.82, 19.68], [88.97, 20.03], [89.5, 20.25], [89.75, 20.15], [89.82, 20.18], [89.85, 20.25], [89.82, 20.32], [89.47, 20.47], [89.32, 20.82], [89.25, 20.85], [89.0, 20.75], [88.47, 20.97], [88.25, 21.5], [88.47, 22.03], [89.0, 22.25], [89.25, 22.15], [89.5, 22.25], [90.0, 22.04], [90.38, 22.2], [90.25, 22.5], [90.47, 23.03], [91.0, 23.25], [91.25, 23.15], [91.5, 23.25], [92.03, 23.03], [92.25, 22.5], [92.15, 22.25], [92.25, 22.0], [92.15, 21.75], [92.25, 21.5], [92.15, 21.25], [92.25, 21.0], [92.15, 20.75], [92.25, 20.5], [92.03, 19.97], [91.68, 19.82], [91.53, 19.47], [91.18, 19.32], [91.15, 19.25], [91.25, 19.0], [91.03, 18.47], [90.5, 18.25], [90.25, 18.35], [90.18, 18.32], [90.03, 17.97], [89.5, 17.75], [89.25, 17.85], [89.18, 17.82], [89.03, 17.47], [88.5, 17.25], [88.25, 17.35], [88.0, 17.25], [87.75, 17.35], [87.5, 17.25], [87.25, 17.35], [87.0, 17.25], [86.75, 17.35], [86.5, 17.25], [86.25, 17.35], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [84.97, 17.47], [84.82, 17.82], [84.75, 17.85], [84.5, 17.75], [83.97, 17.97], [83.75, 18.5]]], [[[93.47, 21.53], [94.0, 21.75], [94.25, 21.65], [94.32, 21.68], [94.35, 21.75], [94.32, 21.82], [93.97, 21.97], [93.75, 22.5], [93.85, 22.75], [93.75, 23.0], [93.97, 23.53], [94.5, 23.75], [94.75, 23.65], [94.82, 23.68], [94.85, 23.75], [94.75, 24.0], [94.97, 24.53], [95.32, 24.68], [95.47, 25.03], [96.0, 25.25], [96.25, 25.15], [96.32, 25.18], [96.47, 25.53], [97.0, 25.75], [97.53, 25.53], [97.7, 25.13], [98.0, 25.25], [98.25, 25.15], [98.32, 25.18], [98.47, 25.53], [99.0, 25.75], [99.53, 25.53], [99.75, 25.0], [99.65, 24.75], [99.75, 24.5], [99.65, 24.25], [99.75, 24.0], [99.53, 23.47], [99.18, 23.32], [99.03, 22.97], [98.68, 22.82], [98.53, 22.47], [98.18, 22.32], [98.03, 21.97], [97.68, 21.82], [97.53, 21.47], [97.18, 21.32], [97.03, 20.97], [96.68, 20.82], [96.65, 20.75], [96.75, 20.5], [96.65, 20.25], [96.75, 20.0], [96.65, 19.75], [96.75, 19.5], [96.53, 18.97], [96.18, 18.82], [96.03, 18.47], [95.68, 18.32], [95.53, 17.97], [95.0, 17.75], [94.47, 17.97], [94.25, 18.5], [94.35, 18.75], [94.32, 18.82], [93.97, 18.97], [93.82, 19.32], [93.75, 19.35], [93.5, 19.25], [93.25, 19.35], [93.0, 19.25], [92.47, 19.47], [92.25, 20.0], [92.47, 20.53], [92.82, 20.68], [92.97, 21.03], [93.32, 21.18], [93.47, 21.53]]]]}, "2015-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[94.0, 21.75], [94.53, 21.53], [94.68, 21.18], [95.03, 21.03], [95.18, 20.68], [95.25, 20.65], [95.5, 20.75], [95.75, 20.65], [96.0, 20.75], [96.53, 20.53], [96.75, 20.0], [96.65, 19.75], [96.75, 19.5], [96.53, 18.97], [96.18, 18.82], [96.03, 18.47], [95.68, 18.32], [95.53, 17.97], [95.0, 17.75], [94.47, 17.97], [94.25, 18.5], [94.35, 18.75], [94.25, 19.0], [94.35, 19.25], [94.25, 19.5], [94.35, 19.75], [94.32, 19.82], [94.25, 19.85], [94.0, 19.75], [93.47, 19.97], [93.25, 20.5], [93.35, 20.75], [93.25, 21.0], [93.47, 21.53], [94.0, 21.75]]], [[[86.5, 19.75], [86.75, 19.65], [87.0, 19.75], [87.25, 19.65], [87.5, 19.75], [88.0, 19.54], [88.5, 19.75], [88.75, 19.65], [88.82, 19.68], [88.97, 20.03], [89.5, 20.25], [89.75, 20.15], [89.82, 20.18], [89.85, 20.25], [89.75, 20.5], [89.85, 20.75], [89.75, 21.0], [89.97, 21.53], [90.32, 21.68], [90.47, 22.03], [90.82, 22.18], [90.97, 22.53], [91.5, 22.75], [92.03, 22.53], [92.25, 22.0], [92.15, 21.75], [92.25, 21.5], [92.03, 20.97], [91.68, 20.82], [91.65, 20.75], [91.75, 20.5], [91.65, 20.25], [91.75, 20.0], [91.53, 19.47], [91.18, 19.32], [91.15, 19.25], [91.25, 19.0], [91.03, 18.47], [90.5, 18.25], [90.25, 18.35], [90.18, 18.32], [90.03, 17.97], [89.5, 17.75], [89.25, 17.85], [89.18, 17.82], [89.03, 17.47], [88.5, 17.25], [88.25, 17.35], [88.0, 17.25], [87.75, 17.35], [87.5, 17.25], [87.25, 17.35], [87.0, 17.25], [86.75, 17.35], [86.5, 17.25], [86.25, 17.35], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [84.97, 17.47], [84.75, 18.0], [84.97, 18.53], [85.32, 18.68], [85.47, 19.03], [85.82, 19.18], [85.97, 19.53], [86.5, 19.75]]], [[[96.0, 22.75], [96.53, 22.53], [96.68, 22.18], [97.03, 22.03], [97.25, 21.5], [97.03, 20.97], [96.5, 20.75], [95.97, 20.97], [95.82, 21.32], [95.47, 21.47], [95.25, 22.0], [95.47, 22.53], [96.0, 22.75]]]]}, "2015-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.97, 19.03], [87.5, 19.25], [87.75, 19.15], [87.82, 19.18], [87.97, 19.53], [88.5, 19.75], [88.75, 19.65], [88.82, 19.68], [88.97, 20.03], [89.5, 20.25], [89.75, 20.15], [90.0, 20.25], [90.25, 20.15], [90.5, 20.25], [91.03, 20.03], [91.25, 19.5], [91.15, 19.25], [91.25, 19.0], [91.03, 18.47], [90.5, 18.25], [90.25, 18.35], [90.18, 18.32], [90.03, 17.97], [89.5, 17.75], [89.25, 17.85], [89.18, 17.82], [89.03, 17.47], [88.5, 17.25], [88.25, 17.35], [88.0, 17.25], [87.75, 17.35], [87.5, 17.25], [86.97, 17.47], [86.75, 18.0], [86.85, 18.25], [86.75, 18.5], [86.97, 19.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.11808724823652}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.999225038371529}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.455580399411645, 22.329038026459955, 22.225544393059295, 22.99917001710145, 25.108741002401644, 26.105631687669074]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.904126159474856, 13.740380948824907, 13.012759878880843, 14.542258620304722, 18.906350402287273, 25.977879428239305]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6713029143916287, -2.1640766199952846, -2.316126408826173, -2.009966245994384, -1.503534331656391, -1.0592147103226353]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6220879972801754, -3.9005440649095817, -4.11808724823652, -3.592301366482104, -2.453383741711491, -1.2217975428345085]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6721057580408603, -1.9109224336458144, -2.046203265465527, -1.9450447619257725, -1.829098198908353, -1.511964955006558]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.418099511261631, -2.70345641289312, -2.8454755848303317, -2.7285966809831796, -2.565238725569149, -1.6678009706406403]}}