{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:20.577137", "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": "2023-Jan-16_to_2023-Jan-19_88.0_25.5"}, "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": 2023010000786}, "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": "January 16 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 19 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 97619.89993023087}, "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", "India"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 25.5}, "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": 88.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "88.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 84.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 90.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[83.47, 27.03], [84.0, 27.25], [84.53, 27.03], [84.68, 26.68], [84.75, 26.65], [85.0, 26.75], [85.25, 26.65], [85.5, 26.75], 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"IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau", "S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.25, 25.5], [83.47, 26.03], [83.82, 26.18], [83.97, 26.53], [84.5, 26.75], [84.75, 26.65], [85.0, 26.75], [85.25, 26.65], [85.5, 26.75], [85.75, 26.65], [86.0, 26.75], [86.25, 26.65], [86.5, 26.75], [86.75, 26.65], [87.0, 26.75], [87.25, 26.65], [87.5, 26.75], [87.75, 26.65], [87.82, 26.68], [87.85, 26.75], [87.75, 27.0], [87.97, 27.53], [88.5, 27.75], [89.03, 27.53], [89.25, 27.0], [89.15, 26.75], [89.18, 26.68], [89.53, 26.53], [89.68, 26.18], [90.03, 26.03], [90.25, 25.5], [90.15, 25.25], [90.25, 25.0], [90.03, 24.47], [89.5, 24.25], [89.25, 24.35], [89.0, 24.25], [88.75, 24.35], [88.5, 24.25], [88.25, 24.35], [88.0, 24.25], [87.47, 24.47], 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mean t2m.", "value": [13.217663649182384, 13.155742159036834, 13.408444179612388, 14.179981041725512]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.358612695245085, 11.261109303794399, 11.850225226052942, 12.755634390143598]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7474911652420637, -3.003237625849954, -2.80272387030527, -2.3069038179566785]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.392123888936908, -3.8226099181014206, -3.5852564785514573, -2.558223693634943]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6092695114413784, -1.7525037366699046, -1.6624636795913705, -1.3460442501157504]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.08906365022581, -2.264014968485653, -2.1291959166261067, -1.456355628649373]}}