{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:52.994140", "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": "2022-Sep-14_to_2022-Sep-17_81.5_27.5"}, "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": 2022090000561}, "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": "September 14 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 17 2022"}, "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": 120226.69584224111}, "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": ["India", "Nepal"]}, "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": 27.5}, "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": 81.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 78.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 84.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[81.5, 26.25], [81.25, 26.35], [81.18, 26.32], [81.15, 26.25], [81.25, 26.0], [81.03, 25.47], [80.5, 25.25], [79.97, 25.47], 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26.75]]]]}}, "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": {"2022-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[77.97, 27.53], [78.32, 27.68], [78.47, 28.03], [79.0, 28.25], [79.25, 28.15], [79.5, 28.25], [80.03, 28.03], [80.18, 27.68], [80.25, 27.65], [80.32, 27.68], [80.47, 28.03], [81.0, 28.25], [81.25, 28.15], [81.5, 28.25], [82.03, 28.03], [82.25, 27.5], [82.15, 27.25], [82.25, 27.0], [82.03, 26.47], [81.5, 26.25], [81.25, 26.35], [81.18, 26.32], [81.15, 26.25], [81.25, 26.0], [81.03, 25.47], [80.5, 25.25], [79.97, 25.47], [79.82, 25.82], [79.47, 25.97], [79.25, 26.5], [79.03, 25.97], [78.5, 25.75], [78.25, 25.85], [78.0, 25.75], [77.47, 25.97], [77.25, 26.5], [77.47, 27.03], [77.82, 27.18], [77.97, 27.53]], [[79.35, 26.75], [79.32, 26.82], 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{"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.4968762032928, 20.28990572650258, 19.402670750105187, 20.804397497741377]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.114776183958863, -2.5518596339567794, -2.699729727179833, -2.004100839471308]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4984388467697727, -3.3565381547550714, -4.046409522451711, -2.7338790861746247]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4476392137005454, -1.9960118701104699, -2.090706989541204, -1.6084865429093838]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5310827565075904, -2.717152324158642, -3.0313776371158085, -2.0222889886138016]}}