{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:00.581726", "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": "2026-Mar-28_to_2026-Mar-30_88.0_26.5"}, "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": 2026030000751}, "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": "March 28 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 30 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 52702.6682224802}, "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", "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": 26.5}, "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": 86.75}, "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": 25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.25, 26.5], [86.47, 27.03], [87.0, 27.25], [87.25, 27.15], [87.5, 27.25], [87.75, 27.15], [88.0, 27.25], [88.25, 27.15], [88.5, 27.25], [88.75, 27.15], [89.0, 27.25], [89.25, 27.15], [89.5, 27.25], [89.75, 27.15], [90.0, 27.25], [90.25, 27.15], [90.5, 27.25], [90.75, 27.15], [91.0, 27.25], [91.53, 27.03], [91.75, 26.5], [91.65, 26.25], [91.75, 26.0], [91.53, 25.47], [91.0, 25.25], [90.75, 25.35], [90.5, 25.25], [90.25, 25.35], [90.0, 25.25], [89.75, 25.35], [89.5, 25.25], [89.25, 25.35], [89.18, 25.32], [89.03, 24.97], [88.5, 24.75], [88.25, 24.85], [88.0, 24.75], [87.47, 24.97], [87.32, 25.32], [86.97, 25.47], [86.82, 25.82], [86.47, 25.97], [86.25, 26.5]]]]}, "2026-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.25, 26.5], [86.47, 27.03], [87.0, 27.25], [87.25, 27.15], [87.5, 27.25], [87.75, 27.15], [88.0, 27.25], [88.25, 27.15], [88.5, 27.25], [88.75, 27.15], [89.0, 27.25], [89.25, 27.15], [89.5, 27.25], [89.75, 27.15], [90.0, 27.25], [90.25, 27.15], [90.5, 27.25], [90.75, 27.15], [91.0, 27.25], [91.53, 27.03], [91.75, 26.5], [91.65, 26.25], [91.75, 26.0], [91.53, 25.47], [91.0, 25.25], [90.75, 25.35], [90.5, 25.25], [90.25, 25.35], [90.0, 25.25], [89.75, 25.35], [89.5, 25.25], [89.25, 25.35], [89.18, 25.32], [89.03, 24.97], [88.5, 24.75], [88.25, 24.85], [88.0, 24.75], [87.47, 24.97], [87.32, 25.32], [86.97, 25.47], [86.82, 25.82], [86.47, 25.97], [86.25, 26.5]]]]}, "2026-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.25, 26.5], [86.47, 27.03], [87.0, 27.25], [87.25, 27.15], [87.5, 27.25], [87.75, 27.15], [88.0, 27.25], [88.25, 27.15], [88.5, 27.25], [88.75, 27.15], [89.0, 27.25], [89.25, 27.15], [89.5, 27.25], [89.75, 27.15], [90.0, 27.25], [90.25, 27.15], [90.5, 27.25], [90.75, 27.15], [91.0, 27.25], [91.53, 27.03], [91.75, 26.5], [91.65, 26.25], [91.75, 26.0], [91.53, 25.47], [91.0, 25.25], [90.75, 25.35], [90.5, 25.25], [90.25, 25.35], [90.0, 25.25], [89.75, 25.35], [89.5, 25.25], [89.25, 25.35], [89.18, 25.32], [89.03, 24.97], [88.5, 24.75], [88.25, 24.85], [88.0, 24.75], [87.47, 24.97], [87.32, 25.32], [86.97, 25.47], [86.82, 25.82], [86.47, 25.97], [86.25, 26.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.48957548579375}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.218009710107435}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.281021037854657, 21.803199353134403, 22.887400028161892]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.77124684651693, 20.54789250691732, 21.64200871785482]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.886640313014527, -4.400497167148689, -3.3668916501590913]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.48957548579375, -4.900428361533329, -3.945049327257493]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1545152385626727, -1.9533977523020816, -1.5062943239982598]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.51882873111677, -2.219698090665545, -1.794542866528705]}}