{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:37.864869", "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-Aug-20_to_2015-Aug-24_90.0_28.5"}, "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": 2015080000766}, "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": "August 20 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 24 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 132507.43565623264}, "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", "Bhutan", "China", "India", "Nepal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia", "Tibetan-Plateau"]}, "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": 28.5}, "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": 90.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "90.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 85.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 90.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.35, 26.75], [85.25, 27.0], [85.47, 27.53], [86.0, 27.75], [86.25, 27.65], [86.5, 27.75], [86.75, 27.65], [87.0, 27.75], [87.5, 27.54], [87.88, 27.7], [87.75, 28.0], [87.97, 28.53], [88.32, 28.68], [88.47, 29.03], [89.0, 29.25], [89.25, 29.15], [89.32, 29.18], [89.47, 29.53], [90.0, 29.75], [90.25, 29.65], [90.5, 29.75], [91.03, 29.53], [91.25, 29.0], [91.15, 28.75], [91.25, 28.5], [91.15, 28.25], [91.25, 28.0], [91.03, 27.47], [90.68, 27.32], [90.65, 27.25], [90.75, 27.0], [90.65, 26.75], [90.68, 26.68], [91.03, 26.53], [91.25, 26.0], [91.03, 25.47], [90.68, 25.32], [90.53, 24.97], [90.18, 24.82], [90.03, 24.47], [89.5, 24.25], [88.97, 24.47], [88.82, 24.82], [88.75, 24.85], [88.5, 24.75], [88.25, 24.85], [88.0, 24.75], [87.75, 24.85], [87.5, 24.75], [87.25, 24.85], [87.0, 24.75], [86.75, 24.85], [86.5, 24.75], [85.97, 24.97], [85.82, 25.32], [85.47, 25.47], [85.25, 26.0], [85.35, 26.25], [85.25, 26.5], [85.35, 26.75]]]]}, "2015-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.35, 26.75], [85.25, 27.0], [85.47, 27.53], [86.0, 27.75], [86.25, 27.65], [86.5, 27.75], [86.75, 27.65], [87.0, 27.75], [87.5, 27.54], [87.88, 27.7], [87.75, 28.0], [87.97, 28.53], [88.32, 28.68], [88.47, 29.03], [89.0, 29.25], [89.25, 29.15], [89.32, 29.18], [89.47, 29.53], [90.0, 29.75], [90.25, 29.65], [90.5, 29.75], [91.03, 29.53], [91.25, 29.0], [91.15, 28.75], [91.25, 28.5], [91.15, 28.25], [91.25, 28.0], [91.03, 27.47], [90.68, 27.32], [90.65, 27.25], [90.75, 27.0], [90.65, 26.75], [90.68, 26.68], [91.03, 26.53], [91.25, 26.0], [91.03, 25.47], [90.68, 25.32], [90.53, 24.97], [90.18, 24.82], [90.03, 24.47], [89.5, 24.25], [88.97, 24.47], [88.82, 24.82], [88.75, 24.85], [88.5, 24.75], [88.25, 24.85], [88.0, 24.75], [87.75, 24.85], [87.5, 24.75], [87.25, 24.85], [87.0, 24.75], [86.75, 24.85], [86.5, 24.75], [85.97, 24.97], [85.82, 25.32], [85.47, 25.47], [85.25, 26.0], [85.35, 26.25], [85.25, 26.5], [85.35, 26.75]]]]}, "2015-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.35, 26.75], [85.25, 27.0], [85.47, 27.53], [86.0, 27.75], [86.25, 27.65], [86.5, 27.75], [86.75, 27.65], [87.0, 27.75], [87.5, 27.54], [87.88, 27.7], [87.75, 28.0], [87.97, 28.53], [88.32, 28.68], [88.47, 29.03], [89.0, 29.25], [89.25, 29.15], [89.32, 29.18], [89.47, 29.53], [90.0, 29.75], [90.25, 29.65], [90.5, 29.75], [91.03, 29.53], [91.25, 29.0], [91.15, 28.75], [91.25, 28.5], [91.15, 28.25], [91.25, 28.0], [91.03, 27.47], [90.68, 27.32], [90.65, 27.25], [90.75, 27.0], [90.65, 26.75], [90.68, 26.68], [91.03, 26.53], [91.25, 26.0], [91.03, 25.47], [90.68, 25.32], [90.53, 24.97], [90.18, 24.82], [90.03, 24.47], [89.5, 24.25], [88.97, 24.47], [88.82, 24.82], [88.75, 24.85], [88.5, 24.75], [88.25, 24.85], [88.0, 24.75], [87.75, 24.85], [87.5, 24.75], [87.25, 24.85], [87.0, 24.75], [86.75, 24.85], [86.5, 24.75], [85.97, 24.97], [85.82, 25.32], [85.47, 25.47], [85.25, 26.0], [85.35, 26.25], [85.25, 26.5], [85.35, 26.75]]]]}, "2015-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[89.5, 29.25], [89.75, 29.15], [90.0, 29.25], [90.25, 29.15], [90.5, 29.25], [91.03, 29.03], [91.25, 28.5], [91.03, 27.97], [90.5, 27.75], [90.25, 27.85], [90.0, 27.75], [89.75, 27.85], [89.68, 27.82], [89.53, 27.47], [89.0, 27.25], [88.47, 27.47], [88.25, 28.0], [88.47, 28.53], [88.82, 28.68], [88.97, 29.03], [89.5, 29.25]]]]}, "2015-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.0, 29.25], [90.53, 29.03], [90.75, 28.5], [90.53, 27.97], [90.0, 27.75], [89.47, 27.97], [89.25, 28.5], [89.47, 29.03], [90.0, 29.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.9954975092882705}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4780586745679933}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.035132566719824, 19.807364040461323, 20.156604689480048, 2.4312685317024147, 2.2665973940702884]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.47816446592543116, 0.26363299528753714, 1.0693625632056296, 0.7599308875022075, 2.2665973940702884]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4553275452361234, -2.640782771951501, -2.300694921092481, -2.8527571795889486, -2.773062354830131]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.39739544126752, -4.9954975092882705, -4.109333258379138, -4.280625185174813, -2.773062354830131]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0935045626769733, -2.289632070214186, -1.9951063584588578, -2.210036733782712, -2.3772640973193053]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.280263818405617, -3.9699335811316905, -3.4208806046433047, -3.3715004512208955, -2.3772640973193053]}}