{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:51.546260", "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-10_to_2022-Sep-12_55.5_42.0"}, "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": 2022090000459}, "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 10 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": 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": 73590.76515630516}, "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": ["Kazakhstan", "Turkmenistan", "Uzbekistan"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 42.0}, "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": 55.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "55.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 54.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 58.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[53.75, 43.0], [53.97, 43.53], [54.5, 43.75], [54.75, 43.65], [55.0, 43.75], [55.25, 43.65], [55.5, 43.75], [55.75, 43.65], [56.0, 43.75], [56.25, 43.65], [56.5, 43.75], [57.03, 43.53], [57.18, 43.18], [57.25, 43.15], [57.32, 43.18], [57.47, 43.53], [58.0, 43.75], [58.53, 43.53], [58.75, 43.0], [58.65, 42.75], [58.75, 42.5], [58.53, 41.97], [58.0, 41.75], [57.75, 41.85], [57.68, 41.82], [57.63, 41.7], [58.03, 41.53], [58.25, 41.0], [58.15, 40.75], [58.25, 40.5], [58.03, 39.97], [57.5, 39.75], [57.25, 39.85], [57.0, 39.75], [56.5, 39.96], [56.0, 39.75], [55.47, 39.97], [55.32, 40.32], [54.97, 40.47], [54.82, 40.82], [54.75, 40.85], [54.5, 40.75], [53.97, 40.97], [53.75, 41.5], [53.85, 41.75], [53.75, 42.0], [53.96, 42.5], [53.75, 43.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.75, 42.0], [53.96, 42.5], [53.75, 43.0], [53.97, 43.53], [54.5, 43.75], [54.75, 43.65], [55.0, 43.75], [55.25, 43.65], [55.5, 43.75], [55.75, 43.65], [56.0, 43.75], [56.25, 43.65], [56.5, 43.75], [57.03, 43.53], [57.18, 43.18], [57.25, 43.15], [57.32, 43.18], [57.47, 43.53], [58.0, 43.75], [58.53, 43.53], [58.75, 43.0], [58.65, 42.75], [58.75, 42.5], [58.53, 41.97], [58.0, 41.75], [57.75, 41.85], [57.68, 41.82], [57.63, 41.7], [58.03, 41.53], [58.25, 41.0], [58.15, 40.75], [58.25, 40.5], [58.03, 39.97], [57.5, 39.75], [57.25, 39.85], [57.0, 39.75], [56.5, 39.96], [56.0, 39.75], [55.47, 39.97], [55.32, 40.32], [54.97, 40.47], [54.82, 40.82], [54.75, 40.85], [54.5, 40.75], [53.97, 40.97], [53.75, 41.5], [53.85, 41.75], [53.75, 42.0]]]]}, "2022-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.75, 42.0], [53.96, 42.5], [53.75, 43.0], [53.97, 43.53], [54.5, 43.75], [54.75, 43.65], [55.0, 43.75], [55.25, 43.65], [55.5, 43.75], [55.75, 43.65], [56.0, 43.75], [56.25, 43.65], [56.5, 43.75], [57.03, 43.53], [57.18, 43.18], [57.25, 43.15], [57.32, 43.18], [57.47, 43.53], [58.0, 43.75], [58.53, 43.53], [58.75, 43.0], [58.65, 42.75], [58.75, 42.5], [58.53, 41.97], [58.0, 41.75], [57.75, 41.85], [57.68, 41.82], [57.63, 41.7], [58.03, 41.53], [58.25, 41.0], [58.15, 40.75], [58.25, 40.5], [58.03, 39.97], [57.5, 39.75], [57.25, 39.85], [57.0, 39.75], [56.5, 39.96], [56.0, 39.75], [55.47, 39.97], [55.32, 40.32], [54.97, 40.47], [54.82, 40.82], [54.75, 40.85], [54.5, 40.75], [53.97, 40.97], [53.75, 41.5], [53.85, 41.75], [53.75, 42.0]]]]}, "2022-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.75, 42.0], [53.96, 42.5], [53.75, 43.0], [53.97, 43.53], [54.5, 43.75], [54.75, 43.65], [55.0, 43.75], [55.25, 43.65], [55.5, 43.75], [55.75, 43.65], [56.0, 43.75], [56.25, 43.65], [56.5, 43.75], [57.03, 43.53], [57.18, 43.18], [57.25, 43.15], [57.32, 43.18], [57.47, 43.53], [58.0, 43.75], [58.53, 43.53], [58.75, 43.0], [58.65, 42.75], [58.75, 42.5], [58.53, 41.97], [58.0, 41.75], [57.75, 41.85], [57.68, 41.82], [57.63, 41.7], [58.03, 41.53], [58.25, 41.0], [58.15, 40.75], [58.25, 40.5], [58.03, 39.97], [57.5, 39.75], [57.25, 39.85], [57.0, 39.75], [56.5, 39.96], [56.0, 39.75], [55.47, 39.97], [55.32, 40.32], [54.97, 40.47], [54.82, 40.82], [54.75, 40.85], [54.5, 40.75], [53.97, 40.97], [53.75, 41.5], [53.85, 41.75], [53.75, 42.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.678826826821364}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.760759311115812}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.039119051020407, 14.928343784304218, 17.237644610804466]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.414764483649208, 13.24093570281292, 15.639964861798092]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.720228760399339, -7.567229811182251, -4.994819361765847]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.818034934341597, -8.678826826821364, -5.763271234047579]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4861290572794483, -2.423179958460744, -1.6576371416983076]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8061620384500203, -2.784760648357213, -1.897865102116737]}}