{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:35.896079", "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-Mar-29_to_2023-Mar-31_71.0_31.5"}, "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": 2023030000958}, "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 29 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 31 2023"}, "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": 66274.386715601}, "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": ["Pakistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia", "W.C.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": []}, "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": 31.5}, "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": 71.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "71.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 68.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 71.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.25, 30.5], [68.35, 30.75], [68.25, 31.0], [68.35, 31.25], [68.25, 31.5], [68.47, 32.03], [68.82, 32.18], [68.97, 32.53], [69.5, 32.75], [69.8, 32.63], [69.97, 33.03], [70.5, 33.25], [71.03, 33.03], [71.18, 32.68], [71.53, 32.53], [71.68, 32.18], [72.03, 32.03], [72.25, 31.5], [72.03, 30.97], [71.68, 30.82], [71.53, 30.47], [71.18, 30.32], [71.15, 30.25], [71.25, 30.0], [71.03, 29.47], [70.5, 29.25], [70.25, 29.35], [70.0, 29.25], [69.75, 29.35], [69.68, 29.32], [69.53, 28.97], [69.0, 28.75], [68.75, 28.85], [68.5, 28.75], [67.97, 28.97], [67.75, 29.5], [67.97, 30.03], [68.32, 30.18], [68.35, 30.25], [68.25, 30.5]]]]}, "2023-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.25, 30.5], [68.35, 30.75], [68.25, 31.0], [68.35, 31.25], [68.25, 31.5], [68.47, 32.03], [68.82, 32.18], [68.97, 32.53], [69.5, 32.75], [69.8, 32.63], [69.97, 33.03], [70.5, 33.25], [71.03, 33.03], [71.18, 32.68], [71.53, 32.53], [71.68, 32.18], [72.03, 32.03], [72.25, 31.5], [72.03, 30.97], [71.68, 30.82], [71.53, 30.47], [71.18, 30.32], [71.15, 30.25], [71.25, 30.0], [71.03, 29.47], [70.5, 29.25], [70.25, 29.35], [70.0, 29.25], [69.75, 29.35], [69.68, 29.32], [69.53, 28.97], [69.0, 28.75], [68.75, 28.85], [68.5, 28.75], [67.97, 28.97], [67.75, 29.5], [67.97, 30.03], [68.32, 30.18], [68.35, 30.25], [68.25, 30.5]]]]}, "2023-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.25, 30.5], [68.35, 30.75], [68.25, 31.0], [68.35, 31.25], [68.25, 31.5], [68.47, 32.03], [68.82, 32.18], [68.97, 32.53], [69.5, 32.75], [69.8, 32.63], [69.97, 33.03], [70.5, 33.25], [71.03, 33.03], [71.18, 32.68], [71.53, 32.53], [71.68, 32.18], [72.03, 32.03], [72.25, 31.5], [72.03, 30.97], [71.68, 30.82], [71.53, 30.47], [71.18, 30.32], [71.15, 30.25], [71.25, 30.0], [71.03, 29.47], [70.5, 29.25], [70.25, 29.35], [70.0, 29.25], [69.75, 29.35], [69.68, 29.32], [69.53, 28.97], [69.0, 28.75], [68.75, 28.85], [68.5, 28.75], [67.97, 28.97], [67.75, 29.5], [67.97, 30.03], [68.32, 30.18], [68.35, 30.25], [68.25, 30.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.034459105195879}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.481522539144812}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.26664592783618, 14.422905606912877, 15.634537684178213]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.736608594584425, 8.26580233075424, 9.328847698899665]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.11705266628763, -6.170898459640634, -5.156616491506172]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.799033345041266, -7.034459105195879, -6.0382002724632]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.667753016687703, -1.9982960755484063, -1.6335312465893128]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8392938923093691, -2.3793888777453347, -1.8763118251079902]}}