{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:05.924477", "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": "2021-Jun-29_to_2021-Jul-03_90.0_25.0"}, "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": 2021060001192}, "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": "June 29 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 03 2021"}, "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": 110836.39021730187}, "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", "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": 25.0}, "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": 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": 84.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 91.25}, "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": 27.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.75, 25.5], [87.97, 26.03], [88.32, 26.18], [88.47, 26.53], [89.0, 26.75], [89.25, 26.65], [89.5, 26.75], [89.75, 26.65], [90.0, 26.75], [90.25, 26.65], [90.5, 26.75], [91.03, 26.53], [91.18, 26.18], [91.53, 26.03], [91.75, 25.5], [91.53, 24.97], [91.0, 24.75], [90.75, 24.85], [90.68, 24.82], [90.53, 24.47], [90.0, 24.25], [89.75, 24.35], [89.5, 24.25], [89.25, 24.35], [89.0, 24.25], [88.47, 24.47], [88.32, 24.82], [87.97, 24.97], [87.75, 25.5]]]]}, "2021-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.75, 27.0], [84.97, 27.53], [85.5, 27.75], [85.75, 27.65], [86.0, 27.75], [86.25, 27.65], [86.5, 27.75], [86.75, 27.65], [87.0, 27.75], [87.25, 27.65], [87.5, 27.75], [87.75, 27.65], [88.0, 27.75], [88.25, 27.65], [88.5, 27.75], [88.75, 27.65], [89.0, 27.75], [89.25, 27.65], [89.5, 27.75], [89.75, 27.65], [90.0, 27.75], [90.25, 27.65], [90.5, 27.75], [90.75, 27.65], [91.0, 27.75], [91.53, 27.53], [91.75, 27.0], [91.65, 26.75], [91.75, 26.5], [91.54, 26.0], [91.75, 25.5], [91.53, 24.97], [91.0, 24.75], [90.75, 24.85], [90.68, 24.82], [90.53, 24.47], [90.0, 24.25], [89.75, 24.35], [89.5, 24.25], [89.25, 24.35], [89.0, 24.25], [88.47, 24.47], [88.32, 24.82], [87.97, 24.97], [87.75, 25.5], [87.85, 25.75], [87.82, 25.82], [87.75, 25.85], [87.68, 25.82], [87.53, 25.47], [87.0, 25.25], [86.47, 25.47], [86.32, 25.82], [86.25, 25.85], [86.0, 25.75], [85.47, 25.97], [85.32, 26.32], [84.97, 26.47], [84.75, 27.0]]]]}, "2021-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.25, 27.5], [84.47, 28.03], [85.0, 28.25], [85.53, 28.03], [85.68, 27.68], [85.75, 27.65], [86.0, 27.75], [86.25, 27.65], [86.5, 27.75], [86.75, 27.65], [87.0, 27.75], [87.25, 27.65], [87.5, 27.75], [87.75, 27.65], [88.0, 27.75], [88.25, 27.65], [88.5, 27.75], [88.75, 27.65], [89.0, 27.75], [89.25, 27.65], [89.5, 27.75], [89.75, 27.65], [90.0, 27.75], [90.25, 27.65], [90.5, 27.75], [90.75, 27.65], [91.0, 27.75], [91.53, 27.53], [91.75, 27.0], [91.65, 26.75], [91.75, 26.5], [91.54, 26.0], [91.75, 25.5], [91.53, 24.97], [91.18, 24.82], [91.03, 24.47], [90.5, 24.25], [90.25, 24.35], [90.0, 24.25], [89.75, 24.35], [89.5, 24.25], [89.25, 24.35], [89.0, 24.25], [88.47, 24.47], [88.32, 24.82], [87.97, 24.97], [87.75, 25.5], [87.85, 25.75], [87.82, 25.82], [87.75, 25.85], [87.68, 25.82], [87.53, 25.47], [87.0, 25.25], [86.47, 25.47], [86.32, 25.82], [86.25, 25.85], [86.0, 25.75], [85.47, 25.97], [85.32, 26.32], [84.97, 26.47], [84.82, 26.82], [84.47, 26.97], [84.25, 27.5]]]]}, "2021-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.25, 27.5], [84.47, 28.03], [85.0, 28.25], [85.53, 28.03], [85.68, 27.68], [85.75, 27.65], [86.0, 27.75], [86.25, 27.65], [86.5, 27.75], [86.75, 27.65], [87.0, 27.75], [87.25, 27.65], [87.5, 27.75], [87.75, 27.65], [88.0, 27.75], [88.25, 27.65], [88.5, 27.75], [88.75, 27.65], [89.0, 27.75], [89.25, 27.65], [89.5, 27.75], [89.75, 27.65], [90.0, 27.75], [90.25, 27.65], [90.5, 27.75], [90.75, 27.65], [91.0, 27.75], [91.53, 27.53], [91.75, 27.0], [91.65, 26.75], [91.75, 26.5], [91.54, 26.0], [91.75, 25.5], [91.53, 24.97], [91.18, 24.82], [91.03, 24.47], [90.5, 24.25], [90.25, 24.35], [90.0, 24.25], [89.75, 24.35], [89.5, 24.25], [89.25, 24.35], [89.0, 24.25], [88.47, 24.47], [88.25, 25.0], [88.35, 25.25], [88.32, 25.32], [87.97, 25.47], [87.82, 25.82], [87.75, 25.85], [87.68, 25.82], [87.53, 25.47], [87.0, 25.25], [86.47, 25.47], [86.32, 25.82], [86.25, 25.85], [86.0, 25.75], [85.47, 25.97], [85.32, 26.32], [84.97, 26.47], [84.82, 26.82], [84.47, 26.97], [84.25, 27.5]]]]}, "2021-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[89.25, 25.0], [89.47, 25.53], [90.0, 25.75], [90.25, 25.65], [90.5, 25.75], [91.03, 25.53], [91.25, 25.0], [91.03, 24.47], [90.5, 24.25], [90.25, 24.35], [90.0, 24.25], [89.47, 24.47], [89.25, 25.0]]], [[[87.47, 27.03], [88.0, 27.25], [88.25, 27.15], [88.5, 27.25], [88.75, 27.15], [89.0, 27.25], [89.53, 27.03], [89.75, 26.5], [89.53, 25.97], [89.0, 25.75], [88.75, 25.85], [88.5, 25.75], [88.25, 25.85], [88.0, 25.75], [87.47, 25.97], [87.25, 26.5], [87.47, 27.03]]], [[[84.25, 27.5], [84.47, 28.03], [85.0, 28.25], [85.53, 28.03], [85.75, 27.5], [85.53, 26.97], [85.0, 26.75], [84.47, 26.97], [84.25, 27.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.3711026231378014}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1011759411278947}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.287867246054418, 24.807184392144904, 24.65888077072293, 24.655185303195026, 25.872391289524614]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.264430487206198, 18.043040783601555, 17.92103953439289, 17.990281604366714, 23.40754116318493]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8511757781271592, -2.076471064687119, -2.212879612892226, -2.151042573300283, -1.7304829242049966]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.194032128263018, -3.1282389429007935, -2.982279416695633, -3.3711026231378014, -2.052505460037594]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5952094691433192, -1.8829326833715618, -2.020968696580752, -1.956008619514673, -1.55104084203053]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8350911500584386, -2.5397492020257073, -2.518905396307231, -2.5121672212408996, -1.8704140262418938]}}