{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:32.002202", "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-Jan-15_to_2011-Jan-20_79.0_50.0"}, "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": 2011010000796}, "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": "January 15 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 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": 68810.91795561816}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Siberia"]}, "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": 50.0}, "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": 73.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 81.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 49.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.03, 50.53], [81.25, 50.0], [81.03, 49.47], [80.5, 49.25], [79.97, 49.47], [79.75, 50.0], [79.97, 50.53], [80.5, 50.75], [81.03, 50.53]]], [[[77.97, 51.03], [78.5, 51.25], [79.03, 51.03], [79.18, 50.68], [79.53, 50.53], [79.75, 50.0], [79.53, 49.47], [79.0, 49.25], [78.47, 49.47], [78.32, 49.82], [77.97, 49.97], [77.75, 50.5], [77.97, 51.03]]]]}, "2011-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[77.97, 51.03], [78.5, 51.25], [78.75, 51.15], [79.0, 51.25], [79.25, 51.15], [79.5, 51.25], [79.75, 51.15], [80.0, 51.25], [80.25, 51.15], [80.5, 51.25], [81.03, 51.03], [81.25, 50.5], [81.15, 50.25], [81.25, 50.0], [81.03, 49.47], [80.5, 49.25], [80.0, 49.46], [79.5, 49.25], [79.25, 49.35], [79.0, 49.25], [78.75, 49.35], [78.5, 49.25], [77.97, 49.47], [77.75, 50.0], [77.85, 50.25], [77.75, 50.5], [77.97, 51.03]]]]}, "2011-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.97, 52.03], [73.5, 52.25], [73.75, 52.15], [74.0, 52.25], [74.25, 52.15], [74.5, 52.25], [74.75, 52.15], [75.0, 52.25], [75.25, 52.15], [75.5, 52.25], [76.03, 52.03], [76.18, 51.68], [76.25, 51.65], [76.5, 51.75], [77.03, 51.53], [77.18, 51.18], [77.25, 51.15], [77.5, 51.25], [77.75, 51.15], [78.0, 51.25], [78.25, 51.15], [78.5, 51.25], [78.75, 51.15], [79.0, 51.25], [79.25, 51.15], [79.5, 51.25], [79.75, 51.15], [80.0, 51.25], [80.25, 51.15], [80.5, 51.25], [81.03, 51.03], [81.25, 50.5], [81.15, 50.25], [81.25, 50.0], [81.03, 49.47], [80.5, 49.25], [80.0, 49.46], [79.68, 49.32], [79.53, 48.97], [79.0, 48.75], [78.47, 48.97], [78.32, 49.32], [77.97, 49.47], [77.82, 49.82], [77.75, 49.85], [77.5, 49.75], [77.25, 49.85], [77.0, 49.75], [76.75, 49.85], [76.5, 49.75], [75.97, 49.97], [75.82, 50.32], [75.75, 50.35], [75.68, 50.32], [75.53, 49.97], [75.0, 49.75], [74.47, 49.97], [74.3, 50.38], [74.0, 50.25], [73.75, 50.35], [73.5, 50.25], [72.97, 50.47], [72.75, 51.0], [72.85, 51.25], [72.75, 51.5], [72.97, 52.03]]]]}, "2011-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.85, 51.75], [72.75, 52.0], [72.97, 52.53], [73.5, 52.75], [74.03, 52.53], [74.18, 52.18], [74.25, 52.15], [74.5, 52.25], [74.75, 52.15], [75.0, 52.25], [75.25, 52.15], [75.5, 52.25], [76.03, 52.03], [76.18, 51.68], [76.25, 51.65], [76.5, 51.75], [77.03, 51.53], [77.18, 51.18], [77.25, 51.15], [77.5, 51.25], [77.75, 51.15], [78.0, 51.25], [78.25, 51.15], [78.5, 51.25], [78.75, 51.15], [79.0, 51.25], [79.25, 51.15], [79.5, 51.25], [79.75, 51.15], [80.0, 51.25], [80.25, 51.15], [80.5, 51.25], [81.03, 51.03], [81.18, 50.68], [81.53, 50.53], [81.75, 50.0], [81.65, 49.75], [81.75, 49.5], [81.53, 48.97], [81.0, 48.75], [80.75, 48.85], [80.5, 48.75], [80.25, 48.85], [80.0, 48.75], [79.75, 48.85], [79.5, 48.75], [79.25, 48.85], [79.0, 48.75], [78.75, 48.85], [78.5, 48.75], [77.97, 48.97], [77.82, 49.32], [77.47, 49.47], [77.32, 49.82], [77.25, 49.85], [77.0, 49.75], [76.75, 49.85], [76.5, 49.75], [75.97, 49.97], [75.82, 50.32], [75.75, 50.35], [75.68, 50.32], [75.53, 49.97], [75.0, 49.75], [74.47, 49.97], [74.3, 50.38], [74.0, 50.25], [73.75, 50.35], [73.5, 50.25], [72.97, 50.47], [72.75, 51.0], [72.85, 51.25], [72.75, 51.5], [72.85, 51.75]]]]}, "2011-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.85, 51.75], [72.75, 52.0], [72.97, 52.53], [73.5, 52.75], [74.03, 52.53], [74.18, 52.18], [74.25, 52.15], [74.5, 52.25], [74.75, 52.15], [75.0, 52.25], [75.25, 52.15], [75.5, 52.25], [76.03, 52.03], [76.18, 51.68], [76.25, 51.65], [76.5, 51.75], [77.03, 51.53], [77.18, 51.18], [77.25, 51.15], [77.5, 51.25], [77.75, 51.15], [78.0, 51.25], [78.25, 51.15], [78.5, 51.25], [79.03, 51.03], [79.18, 50.68], [79.25, 50.65], [79.5, 50.75], [79.75, 50.65], [80.0, 50.75], [80.25, 50.65], [80.5, 50.75], [80.75, 50.65], [81.0, 50.75], [81.53, 50.53], [81.75, 50.0], [81.65, 49.75], [81.75, 49.5], [81.53, 48.97], [81.0, 48.75], [80.75, 48.85], [80.5, 48.75], [80.25, 48.85], [80.0, 48.75], [79.75, 48.85], [79.5, 48.75], [79.25, 48.85], [79.0, 48.75], [78.75, 48.85], [78.5, 48.75], [77.97, 48.97], [77.82, 49.32], [77.47, 49.47], [77.32, 49.82], [77.25, 49.85], [77.0, 49.75], [76.75, 49.85], [76.5, 49.75], [75.97, 49.97], [75.82, 50.32], [75.75, 50.35], [75.68, 50.32], [75.53, 49.97], [75.0, 49.75], [74.47, 49.97], [74.3, 50.38], [74.0, 50.25], [73.75, 50.35], [73.5, 50.25], [72.97, 50.47], [72.75, 51.0], [72.85, 51.25], [72.75, 51.5], [72.85, 51.75]]]]}, "2011-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[72.97, 51.47], [72.75, 52.0], [72.97, 52.53], [73.5, 52.75], [74.03, 52.53], [74.2, 52.13], [74.5, 52.25], [74.75, 52.15], [75.0, 52.25], [75.25, 52.15], [75.5, 52.25], [76.03, 52.03], [76.18, 51.68], [76.25, 51.65], [76.5, 51.75], [77.03, 51.53], [77.18, 51.18], [77.25, 51.15], [77.5, 51.25], [77.75, 51.15], [78.0, 51.25], [78.25, 51.15], [78.5, 51.25], [79.03, 51.03], [79.18, 50.68], [79.25, 50.65], [79.5, 50.75], [79.75, 50.65], [80.0, 50.75], [80.25, 50.65], [80.5, 50.75], [80.75, 50.65], [81.0, 50.75], [81.53, 50.53], [81.75, 50.0], [81.65, 49.75], [81.75, 49.5], [81.53, 48.97], [81.0, 48.75], [80.75, 48.85], [80.5, 48.75], [80.25, 48.85], [80.0, 48.75], [79.75, 48.85], [79.5, 48.75], [79.25, 48.85], [79.0, 48.75], [78.75, 48.85], [78.5, 48.75], [77.97, 48.97], [77.82, 49.32], [77.47, 49.47], [77.32, 49.82], [77.25, 49.85], [77.0, 49.75], [76.75, 49.85], [76.5, 49.75], [75.97, 49.97], [75.82, 50.32], [75.75, 50.35], [75.5, 50.25], [74.97, 50.47], [74.82, 50.82], [74.75, 50.85], [74.5, 50.75], [73.97, 50.97], [73.8, 51.38], [73.5, 51.25], [72.97, 51.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -15.40876685770715}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -13.05245984932216}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-25.53752973425722, -27.119289093767577, -27.53204821638309, -28.56826056373572, -28.269485744680367, -29.495091606432226]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-25.93373812248106, -28.021326923275723, -30.15711333583775, -30.66335820866064, -30.653433171540684, -31.673672603704716]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-11.588102761245144, -12.633994088032912, -12.785164121046726, -13.366232867756038, -12.695909036980446, -13.65965871285824]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-12.05330755365165, -13.312714495091, -14.956174983017092, -14.827366452902623, -14.600760049525917, -15.40876685770715]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5547790299147712, -1.604739642004984, -1.6546176225023965, -1.6542233703736084, -1.5700498319821188, -1.627088343958674]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6026496399121968, -1.671922370508371, -1.7987689832734541, -1.7941860827507372, -1.7094770928605603, -1.7454238214497149]}}