{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-08-03 19:34:05.839554", "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-Jul-20_to_2026-Jul-25_74.5_34.0"}, "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": 2026070000696}, "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": "July 20 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 25 2026"}, "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": 67630.23408171731}, "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": ["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": 34.0}, "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": 74.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "74.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 73.25}, "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": 31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.75, 32.5], [74.97, 33.03], [75.5, 33.25], [76.03, 33.03], [76.18, 32.68], [76.53, 32.53], [76.75, 32.0], [76.53, 31.47], [76.0, 31.25], [75.47, 31.47], [75.32, 31.82], [74.97, 31.97], [74.75, 32.5]]]]}, "2026-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.85, 32.75], [72.75, 33.0], [72.85, 33.25], [72.75, 33.5], [72.97, 34.03], [73.32, 34.18], [73.47, 34.53], [74.0, 34.75], [74.53, 34.53], [74.68, 34.18], [74.75, 34.15], [75.0, 34.25], [75.53, 34.03], [75.68, 33.68], [76.03, 33.53], [76.25, 33.0], [76.15, 32.75], [76.18, 32.68], [76.53, 32.53], [76.75, 32.0], [76.53, 31.47], [76.0, 31.25], [75.75, 31.35], [75.68, 31.32], [75.53, 30.97], [75.0, 30.75], [74.75, 30.85], [74.5, 30.75], [74.25, 30.85], [74.0, 30.75], [73.47, 30.97], [73.32, 31.32], [72.97, 31.47], [72.75, 32.0], [72.85, 32.25], [72.75, 32.5], [72.85, 32.75]]]]}, "2026-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.85, 32.75], [72.75, 33.0], [72.85, 33.25], [72.75, 33.5], [72.97, 34.03], [73.32, 34.18], [73.47, 34.53], [74.0, 34.75], [74.25, 34.65], [74.5, 34.75], [74.75, 34.65], [75.0, 34.75], [75.53, 34.53], [75.75, 34.0], [75.65, 33.75], [75.68, 33.68], [76.03, 33.53], [76.25, 33.0], [76.15, 32.75], [76.18, 32.68], [76.53, 32.53], [76.75, 32.0], [76.53, 31.47], [76.0, 31.25], [75.75, 31.35], [75.68, 31.32], [75.53, 30.97], [75.0, 30.75], [74.75, 30.85], [74.5, 30.75], [74.25, 30.85], [74.0, 30.75], [73.47, 30.97], [73.32, 31.32], [72.97, 31.47], [72.75, 32.0], [72.85, 32.25], [72.75, 32.5], [72.85, 32.75]]]]}, "2026-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.85, 32.75], [72.75, 33.0], [72.85, 33.25], [72.75, 33.5], [72.97, 34.03], [73.32, 34.18], [73.47, 34.53], [74.0, 34.75], [74.25, 34.65], [74.5, 34.75], [74.75, 34.65], [75.0, 34.75], [75.53, 34.53], [75.75, 34.0], [75.65, 33.75], [75.68, 33.68], [76.03, 33.53], [76.25, 33.0], [76.15, 32.75], [76.25, 32.5], [76.15, 32.25], [76.25, 32.0], [76.03, 31.47], [75.68, 31.32], [75.53, 30.97], [75.0, 30.75], [74.75, 30.85], [74.5, 30.75], [74.25, 30.85], [74.0, 30.75], [73.47, 30.97], [73.32, 31.32], [72.97, 31.47], [72.75, 32.0], [72.85, 32.25], [72.75, 32.5], [72.85, 32.75]]]]}, "2026-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.97, 33.47], [73.75, 34.0], [73.97, 34.53], [74.5, 34.75], [74.75, 34.65], [75.0, 34.75], [75.53, 34.53], [75.75, 34.0], [75.53, 33.47], [75.0, 33.25], [74.75, 33.35], [74.5, 33.25], [73.97, 33.47]]]]}, "2026-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.97, 33.47], [73.75, 34.0], [73.97, 34.53], [74.5, 34.75], [74.75, 34.65], [75.0, 34.75], [75.53, 34.53], [75.75, 34.0], [75.53, 33.47], [75.0, 33.25], [74.75, 33.35], [74.5, 33.25], [73.97, 33.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.946816435773542}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1548172154316814}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.946425374348962, 24.22916353013784, 23.725804803310325, 24.10218449910485, 16.36890818277999, 15.65761210123702]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.719252522786462, 14.560954030354821, 14.282072957356775, 14.791504160563193, 15.74012400309249, 15.26796366373702]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6375984966964552, -3.4803070031834955, -3.314220763797056, -2.8462711288373974, -2.4662864560455944, -3.2392691942098963]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.711307715638327, -4.946816435773542, -4.504429934463644, -3.8412891778381777, -2.5620511265580603, -3.5646131667393206]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3400123475642336, -2.155404103836872, -2.0106432514125405, -1.7566356464698816, -1.379494420507771, -1.796923754401812]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.383448842599027, -2.87288268551087, -2.386739099586487, -2.256552382935919, -1.4060858899269701, -1.9346766916579712]}}