{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:04.439355", "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": "2018-Feb-03_to_2018-Feb-08_82.0_16.5"}, "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": 2018020000193}, "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 03 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 08 2018"}, "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": 121675.43169404443}, "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": ["India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Bay-of-Bengal", "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": ["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": 16.5}, "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": 82.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "82.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 80.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 86.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.97, 15.97], [79.75, 16.5], [79.97, 17.03], [80.5, 17.25], [80.75, 17.15], [80.82, 17.18], [80.97, 17.53], [81.5, 17.75], [82.0, 17.54], [82.5, 17.75], [83.03, 17.53], [83.25, 17.0], [83.03, 16.47], [82.68, 16.32], [82.53, 15.97], [82.0, 15.75], [81.75, 15.85], [81.5, 15.75], [81.25, 15.85], [81.0, 15.75], [80.75, 15.85], [80.5, 15.75], [79.97, 15.97]]]]}, "2018-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.5, 17.25], [80.75, 17.15], [80.82, 17.18], [80.97, 17.53], [81.5, 17.75], [82.0, 17.54], [82.5, 17.75], [83.03, 17.53], [83.25, 17.0], [83.03, 16.47], [82.68, 16.32], [82.53, 15.97], [82.18, 15.82], [82.03, 15.47], [81.68, 15.32], [81.65, 15.25], [81.75, 15.0], [81.53, 14.47], [81.0, 14.25], [80.47, 14.47], [80.32, 14.82], [79.97, 14.97], [79.75, 15.5], [79.96, 16.0], [79.75, 16.5], [79.97, 17.03], [80.5, 17.25]]], [[[83.75, 17.0], [83.97, 17.53], [84.32, 17.68], [84.47, 18.03], [85.0, 18.25], [85.53, 18.03], [85.75, 17.5], [85.65, 17.25], [85.75, 17.0], [85.65, 16.75], [85.68, 16.68], [85.75, 16.65], [86.0, 16.75], [86.53, 16.53], [86.75, 16.0], [86.65, 15.75], [86.75, 15.5], [86.53, 14.97], [86.0, 14.75], [85.75, 14.85], [85.5, 14.75], [85.25, 14.85], [85.0, 14.75], [84.47, 14.97], [84.32, 15.32], [83.97, 15.47], [83.75, 16.0], [83.85, 16.25], [83.75, 16.5], [83.85, 16.75], [83.75, 17.0]]]]}, "2018-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.97, 17.03], [80.5, 17.25], [80.75, 17.15], [80.82, 17.18], [80.97, 17.53], [81.5, 17.75], [82.0, 17.54], [82.5, 17.75], [82.75, 17.65], [83.0, 17.75], [83.25, 17.65], [83.5, 17.75], [83.75, 17.65], [83.82, 17.68], [83.97, 18.03], [84.5, 18.25], [84.75, 18.15], [85.0, 18.25], [85.53, 18.03], [85.75, 17.5], [85.65, 17.25], [85.68, 17.18], [86.03, 17.03], [86.18, 16.68], [86.53, 16.53], [86.75, 16.0], [86.65, 15.75], [86.75, 15.5], [86.53, 14.97], [86.0, 14.75], [85.75, 14.85], [85.5, 14.75], [85.25, 14.85], [85.0, 14.75], [84.5, 14.96], [84.0, 14.75], [83.75, 14.85], [83.5, 14.75], [83.25, 14.85], [83.0, 14.75], [82.75, 14.85], [82.5, 14.75], [82.25, 14.85], [82.0, 14.75], [81.7, 14.87], [81.53, 14.47], [81.0, 14.25], [80.47, 14.47], [80.32, 14.82], [79.97, 14.97], [79.75, 15.5], [79.96, 16.0], [79.75, 16.5], [79.97, 17.03]]]]}, "2018-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.75, 15.5], [79.97, 16.03], [80.5, 16.25], [80.75, 16.15], [80.82, 16.18], [80.85, 16.25], [80.75, 16.5], [80.97, 17.03], [81.5, 17.25], [81.75, 17.15], [81.82, 17.18], [81.97, 17.53], [82.5, 17.75], [82.75, 17.65], [83.0, 17.75], [83.25, 17.65], [83.5, 17.75], [83.75, 17.65], [83.82, 17.68], [83.97, 18.03], [84.5, 18.25], [84.75, 18.15], [85.0, 18.25], [85.53, 18.03], [85.75, 17.5], [85.65, 17.25], [85.68, 17.18], [86.03, 17.03], [86.18, 16.68], [86.53, 16.53], [86.75, 16.0], [86.65, 15.75], [86.75, 15.5], [86.53, 14.97], [86.0, 14.75], [85.75, 14.85], [85.5, 14.75], [85.25, 14.85], [85.0, 14.75], [84.5, 14.96], [84.0, 14.75], [83.75, 14.85], [83.5, 14.75], [83.25, 14.85], [83.0, 14.75], [82.75, 14.85], [82.5, 14.75], [82.25, 14.85], [82.0, 14.75], [81.7, 14.87], [81.53, 14.47], [81.0, 14.25], [80.47, 14.47], [80.32, 14.82], [79.97, 14.97], [79.75, 15.5]]]]}, "2018-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.35, 16.25], [81.25, 16.5], [81.47, 17.03], [81.82, 17.18], [81.97, 17.53], [82.5, 17.75], [82.75, 17.65], [83.0, 17.75], [83.25, 17.65], [83.5, 17.75], [83.75, 17.65], [83.82, 17.68], [83.97, 18.03], [84.5, 18.25], [84.75, 18.15], [85.0, 18.25], [85.53, 18.03], [85.75, 17.5], [85.65, 17.25], [85.68, 17.18], [86.03, 17.03], [86.25, 16.5], [86.15, 16.25], [86.25, 16.0], [86.03, 15.47], [85.5, 15.25], [85.25, 15.35], [85.0, 15.25], [84.75, 15.35], [84.68, 15.32], [84.53, 14.97], [84.0, 14.75], [83.75, 14.85], [83.5, 14.75], [83.25, 14.85], [83.0, 14.75], [82.75, 14.85], [82.5, 14.75], [82.25, 14.85], [82.0, 14.75], [81.47, 14.97], [81.25, 15.5], [81.35, 15.75], [81.25, 16.0], [81.35, 16.25]]]]}, "2018-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.47, 17.03], [85.0, 17.25], [85.25, 17.15], [85.5, 17.25], [86.03, 17.03], [86.25, 16.5], [86.15, 16.25], [86.25, 16.0], [86.03, 15.47], [85.5, 15.25], [85.25, 15.35], [85.0, 15.25], [84.47, 15.47], [84.25, 16.0], [84.35, 16.25], [84.25, 16.5], [84.47, 17.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.672779890762797}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9235323236701398}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.079428394964282, 24.159038957077257, 24.181014127826018, 24.043969880368763, 24.228843106230613, 24.211582625978735]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.890665187110642, 23.494752095784122, 23.88160508608081, 23.675820879601304, 23.956684011526818, 24.1273603265156]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0779887126636065, -0.8748774369571601, -0.8914811578839451, -1.0308063145989972, -0.8596704000056351, -0.7197063774750916]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3073650148732554, -1.672779890762797, -1.3371032760304615, -1.3219719584422478, -1.0299118261256126, -0.7893694358869539]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4761650801889499, -1.4622629910814553, -1.640263851948358, -1.9825261858926349, -1.6815442224736783, -1.3626137252925088]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8977556668572684, -2.2287409579244466, -2.0138866888365294, -2.6297377539384303, -2.005173511793252, -1.4492599337447398]}}