{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:22.869920", "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": "2011-Sep-15_to_2011-Sep-20_74.0_29.0"}, "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": 2011090000713}, "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 15 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 20 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 80657.24835875403}, "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", "Pakistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia", "Tibetan-Plateau", "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": 29.0}, "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": 74.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "74.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 72.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 76.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.75, 31.0], [71.97, 31.53], [72.5, 31.75], [72.75, 31.65], 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28.35], [75.5, 28.25], [75.25, 28.35], [75.18, 28.32], [75.03, 27.97], [74.5, 27.75], [74.25, 27.85], [74.0, 27.75], [73.47, 27.97], [73.25, 28.5], [73.35, 28.75], [73.25, 29.0], [73.35, 29.25], [73.32, 29.32], [72.97, 29.47], [72.82, 29.82], [72.47, 29.97], [72.32, 30.32], [71.97, 30.47], [71.75, 31.0]]]]}, "2011-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.75, 31.0], [71.97, 31.53], [72.5, 31.75], [72.75, 31.65], [73.0, 31.75], [73.25, 31.65], [73.5, 31.75], [73.75, 31.65], [74.0, 31.75], [74.53, 31.53], [74.68, 31.18], [74.75, 31.15], [75.0, 31.25], [75.53, 31.03], [75.68, 30.68], [76.03, 30.53], [76.18, 30.18], [76.53, 30.03], [76.75, 29.5], [76.65, 29.25], [76.75, 29.0], [76.53, 28.47], [76.18, 28.32], [76.03, 27.97], [75.68, 27.82], [75.65, 27.75], [75.75, 27.5], [75.53, 26.97], [75.0, 26.75], [74.75, 26.85], [74.5, 26.75], [73.97, 26.97], [73.75, 27.5], [73.85, 27.75], [73.82, 27.82], [73.47, 27.97], [73.25, 28.5], [73.35, 28.75], [73.25, 29.0], [73.35, 29.25], [73.32, 29.32], [72.97, 29.47], [72.82, 29.82], [72.47, 29.97], [72.32, 30.32], [71.97, 30.47], [71.75, 31.0]]]]}, "2011-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.47, 29.53], [74.0, 29.75], [74.53, 29.53], [74.68, 29.18], [75.0, 29.04], [75.5, 29.25], [76.03, 29.03], [76.25, 28.5], [76.03, 27.97], [75.68, 27.82], [75.65, 27.75], [75.75, 27.5], [75.53, 26.97], [75.0, 26.75], [74.75, 26.85], [74.5, 26.75], [73.97, 26.97], [73.75, 27.5], [73.85, 27.75], [73.82, 27.82], [73.47, 27.97], [73.25, 28.5], [73.35, 28.75], [73.25, 29.0], [73.47, 29.53]]]]}, "2011-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.88, 28.3], [73.47, 28.47], [73.25, 29.0], [73.47, 29.53], [74.0, 29.75], [74.53, 29.53], [74.75, 29.0], [74.63, 28.7], [74.75, 28.65], [74.82, 28.68], [74.97, 29.03], [75.5, 29.25], [76.03, 29.03], [76.25, 28.5], [76.03, 27.97], [75.68, 27.82], [75.65, 27.75], [75.75, 27.5], [75.53, 26.97], [75.0, 26.75], [74.75, 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"The daily evolution of maximum standardized t2m anomalies.", "value": [-1.832026556434112, -2.607903168195715, -1.896526243441, -1.548134077872306, -1.5143244391011403, -1.4874098709839505]}}