{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:50.752092", "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-08_to_2022-Sep-12_79.0_17.0"}, "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": 2022090000397}, "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 08 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 12 2022"}, "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": 118402.51023793375}, "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"]}, "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": 17.0}, "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": 79.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "79.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 75.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 82.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.53, 18.03], [80.75, 17.5], [80.65, 17.25], [80.68, 17.18], 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[79.03, 18.53], [79.18, 18.18], [79.25, 18.15]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.25, 16.5], [78.35, 16.75], [78.25, 17.0], [78.47, 17.53], [79.0, 17.75], [79.25, 17.65], [79.5, 17.75], [79.75, 17.65], [80.0, 17.75], [80.53, 17.53], [80.68, 17.18], [80.75, 17.15], [81.0, 17.25], [81.25, 17.15], [81.5, 17.25], [81.75, 17.15], [82.0, 17.25], [82.53, 17.03], [82.75, 16.5], [82.53, 15.97], [82.0, 15.75], [81.75, 15.85], [81.68, 15.82], [81.53, 15.47], [81.0, 15.25], [80.75, 15.35], [80.68, 15.32], [80.53, 14.97], [80.0, 14.75], [79.75, 14.85], [79.5, 14.75], [78.97, 14.97], [78.82, 15.32], [78.47, 15.47], [78.25, 16.0], [78.35, 16.25], [78.25, 16.5]]]]}, "2022-09-09T11:30:00.000000000": {"type": 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duration", "value": -2.1178639042291016}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.1979611768146, 26.53198265259357, 25.182141922420385, 24.63946993708521, 24.350406082177642]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.025094756071894, 24.964260658752153, 23.64304317733422, 23.260909946196705, 23.62605947817258]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.628314257386943, -2.1372876076243186, -2.144238830761455, -2.0342507551546385, -1.7330466137429852]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.615619852067425, -2.678435490340007, -3.3674462658268, -2.66484790866798, -2.3693545358789265]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.108799096147173, -1.7070076075029104, -1.8141734567488377, -1.813575965614886, -1.5591257547442414]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.660842823109926, -1.9097166135989472, -2.492362387948195, -2.468936944970115, -2.0612351487822926]}}