{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:17.230429", "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": "2010-Dec-01_to_2010-Dec-10_98.5_30.0"}, "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": 2010120000107}, "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": "December 01 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 10 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 196693.43877630983}, "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": ["China"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.Asia", "Tibetan-Plateau"]}, "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": 30.0}, "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": 98.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "98.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 96.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 103.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.97, 31.03], [96.5, 31.25], [96.8, 31.13], [96.97, 31.53], [97.5, 31.75], [97.75, 31.65], [98.0, 31.75], [98.25, 31.65], [98.32, 31.68], [98.47, 32.03], [99.0, 32.25], [99.25, 32.15], [99.32, 32.18], [99.47, 32.53], [100.0, 32.75], [100.25, 32.65], [100.32, 32.68], [100.47, 33.03], [101.0, 33.25], [101.25, 33.15], [101.32, 33.18], [101.47, 33.53], [102.0, 33.75], [102.25, 33.65], [102.5, 33.75], [102.75, 33.65], [103.0, 33.75], [103.53, 33.53], [103.68, 33.18], [104.03, 33.03], [104.25, 32.5], [104.03, 31.97], [103.5, 31.75], [102.97, 31.97], [102.82, 32.32], [102.75, 32.35], [102.68, 32.32], [102.65, 32.25], [102.75, 32.0], [102.65, 31.75], [102.68, 31.68], [103.03, 31.53], [103.25, 31.0], [103.03, 30.47], [102.68, 30.32], [102.53, 29.97], [102.18, 29.82], [102.15, 29.75], [102.25, 29.5], [102.03, 28.97], [101.5, 28.75], [101.25, 28.85], [101.18, 28.82], [101.03, 28.47], [100.5, 28.25], [100.25, 28.35], [100.0, 28.25], [99.75, 28.35], [99.5, 28.25], [99.25, 28.35], [99.0, 28.25], [98.75, 28.35], [98.5, 28.25], [97.97, 28.47], [97.82, 28.82], [97.47, 28.97], [97.32, 29.32], [97.25, 29.35], [97.0, 29.25], [96.75, 29.35], [96.5, 29.25], [95.97, 29.47], [95.75, 30.0], [95.85, 30.25], [95.75, 30.5], [95.97, 31.03]]]]}, "2010-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.97, 31.03], [96.5, 31.25], [96.8, 31.13], [96.97, 31.53], [97.5, 31.75], [97.75, 31.65], [98.0, 31.75], [98.25, 31.65], [98.32, 31.68], [98.47, 32.03], [99.0, 32.25], [99.25, 32.15], [99.32, 32.18], [99.47, 32.53], [100.0, 32.75], [100.25, 32.65], [100.32, 32.68], [100.47, 33.03], [101.0, 33.25], [101.25, 33.15], [101.32, 33.18], [101.47, 33.53], [102.0, 33.75], [102.25, 33.65], [102.5, 33.75], [102.75, 33.65], [103.0, 33.75], [103.53, 33.53], [103.68, 33.18], [104.03, 33.03], [104.25, 32.5], [104.03, 31.97], [103.5, 31.75], [102.97, 31.97], [102.82, 32.32], [102.75, 32.35], [102.68, 32.32], [102.65, 32.25], [102.75, 32.0], [102.65, 31.75], [102.68, 31.68], [103.03, 31.53], [103.25, 31.0], [103.03, 30.47], [102.68, 30.32], [102.65, 30.25], [102.75, 30.0], [102.53, 29.47], [102.18, 29.32], [102.03, 28.97], [101.68, 28.82], [101.53, 28.47], [101.0, 28.25], [100.75, 28.35], [100.5, 28.25], [100.25, 28.35], [100.0, 28.25], [99.75, 28.35], [99.5, 28.25], [99.25, 28.35], [99.18, 28.32], [99.03, 27.97], [98.5, 27.75], [98.25, 27.85], [98.0, 27.75], [97.47, 27.97], [97.25, 28.5], [97.38, 28.8], [96.97, 28.97], [96.82, 29.32], [96.75, 29.35], [96.5, 29.25], [95.97, 29.47], [95.75, 30.0], [95.85, 30.25], [95.75, 30.5], [95.97, 31.03]]]]}, "2010-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.97, 31.03], [96.5, 31.25], [96.8, 31.13], [96.97, 31.53], [97.5, 31.75], [97.75, 31.65], [98.0, 31.75], [98.25, 31.65], [98.32, 31.68], [98.47, 32.03], [99.0, 32.25], [99.25, 32.15], [99.32, 32.18], [99.47, 32.53], [100.0, 32.75], [100.25, 32.65], [100.32, 32.68], [100.47, 33.03], [101.0, 33.25], [101.25, 33.15], [101.32, 33.18], [101.47, 33.53], [102.0, 33.75], [102.25, 33.65], [102.5, 33.75], [102.75, 33.65], [103.0, 33.75], [103.53, 33.53], [103.68, 33.18], [104.03, 33.03], [104.25, 32.5], [104.03, 31.97], [103.5, 31.75], [102.97, 31.97], [102.82, 32.32], [102.75, 32.35], [102.68, 32.32], [102.65, 32.25], [102.75, 32.0], [102.65, 31.75], [102.68, 31.68], [103.03, 31.53], [103.25, 31.0], [103.03, 30.47], [102.68, 30.32], [102.65, 30.25], [102.75, 30.0], [102.53, 29.47], [102.18, 29.32], [102.03, 28.97], [101.68, 28.82], [101.53, 28.47], [101.0, 28.25], [100.75, 28.35], [100.5, 28.25], [100.25, 28.35], [100.0, 28.25], [99.75, 28.35], [99.5, 28.25], [99.25, 28.35], [99.18, 28.32], [99.03, 27.97], [98.5, 27.75], [98.25, 27.85], [98.0, 27.75], [97.47, 27.97], [97.25, 28.5], [97.38, 28.8], [96.97, 28.97], [96.82, 29.32], [96.75, 29.35], [96.5, 29.25], [95.97, 29.47], [95.75, 30.0], [95.85, 30.25], [95.75, 30.5], [95.97, 31.03]]]]}, "2010-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.97, 31.03], [96.5, 31.25], [96.8, 31.13], [96.97, 31.53], [97.32, 31.68], [97.47, 32.03], [98.0, 32.25], [98.5, 32.04], [99.0, 32.25], [99.25, 32.15], [99.32, 32.18], [99.47, 32.53], [100.0, 32.75], [100.25, 32.65], [100.32, 32.68], [100.47, 33.03], [101.0, 33.25], [101.25, 33.15], [101.32, 33.18], [101.47, 33.53], [102.0, 33.75], [102.53, 33.53], [102.75, 33.0], [102.65, 32.75], [102.75, 32.5], [102.65, 32.25], [102.75, 32.0], [102.65, 31.75], [102.68, 31.68], [103.03, 31.53], [103.25, 31.0], [103.03, 30.47], [102.68, 30.32], [102.65, 30.25], [102.75, 30.0], [102.53, 29.47], [102.18, 29.32], [102.03, 28.97], [101.68, 28.82], [101.53, 28.47], [101.0, 28.25], [100.75, 28.35], [100.5, 28.25], [100.25, 28.35], [100.0, 28.25], [99.75, 28.35], [99.5, 28.25], [99.25, 28.35], [99.18, 28.32], [99.03, 27.97], [98.5, 27.75], [98.25, 27.85], [98.0, 27.75], [97.47, 27.97], [97.25, 28.5], [97.38, 28.8], [96.97, 28.97], [96.82, 29.32], [96.75, 29.35], [96.5, 29.25], [95.97, 29.47], [95.75, 30.0], [95.85, 30.25], [95.75, 30.5], [95.97, 31.03]]]]}, "2010-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.85, 30.25], [96.75, 30.5], [96.97, 31.03], [97.32, 31.18], [97.35, 31.25], [97.25, 31.5], [97.47, 32.03], [98.0, 32.25], [98.5, 32.04], [99.0, 32.25], [99.25, 32.15], [99.32, 32.18], [99.47, 32.53], [100.0, 32.75], [100.25, 32.65], [100.32, 32.68], [100.47, 33.03], [101.0, 33.25], [101.25, 33.15], [101.5, 33.25], [101.75, 33.15], [102.0, 33.25], [102.53, 33.03], [102.75, 32.5], [102.65, 32.25], [102.75, 32.0], [102.63, 31.7], [103.03, 31.53], [103.25, 31.0], [103.03, 30.47], [102.68, 30.32], [102.65, 30.25], [102.75, 30.0], [102.53, 29.47], [102.18, 29.32], [102.03, 28.97], [101.68, 28.82], [101.53, 28.47], [101.0, 28.25], [100.5, 28.46], [100.0, 28.25], [99.75, 28.35], [99.5, 28.25], [99.25, 28.35], [99.0, 28.25], [98.75, 28.35], [98.5, 28.25], [97.97, 28.47], [97.82, 28.82], [97.75, 28.85], [97.5, 28.75], [96.97, 28.97], [96.75, 29.5], [96.85, 29.75], [96.75, 30.0], [96.85, 30.25]]]]}, "2010-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.75, 30.0], [96.97, 30.53], [97.32, 30.68], [97.46, 31.0], [97.25, 31.5], [97.47, 32.03], [98.0, 32.25], [98.53, 32.03], [98.7, 31.63], [98.82, 31.68], [98.97, 32.03], [99.32, 32.18], [99.47, 32.53], [100.0, 32.75], [100.25, 32.65], [100.5, 32.75], [100.75, 32.65], [101.0, 32.75], [101.25, 32.65], [101.5, 32.75], [101.93, 32.57], [101.75, 33.0], [101.97, 33.53], [102.5, 33.75], [102.75, 33.65], [103.0, 33.75], [103.53, 33.53], [103.75, 33.0], [103.53, 32.47], [103.0, 32.25], [102.75, 32.35], [102.5, 32.25], [102.07, 32.43], [102.25, 32.0], [102.03, 31.47], [101.68, 31.32], [101.54, 31.0], [101.75, 30.5], [101.65, 30.25], [101.75, 30.0], [101.65, 29.75], [101.75, 29.5], [101.53, 28.97], [101.0, 28.75], [100.75, 28.85], [100.5, 28.75], [100.25, 28.85], [100.18, 28.82], [100.03, 28.47], [99.5, 28.25], [99.25, 28.35], [99.0, 28.25], [98.47, 28.47], [98.32, 28.82], [98.25, 28.85], [98.0, 28.75], [97.47, 28.97], [97.32, 29.32], [96.97, 29.47], [96.75, 30.0]]]]}, "2010-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.75, 30.0], [96.97, 30.53], [97.5, 30.75], [97.75, 30.65], [98.0, 30.75], [97.47, 30.97], [97.25, 31.5], [97.47, 32.03], [98.0, 32.25], [98.25, 32.15], [98.5, 32.25], [98.75, 32.15], [98.82, 32.18], [98.97, 32.53], [99.32, 32.68], [99.47, 33.03], [100.0, 33.25], [100.5, 33.04], [101.0, 33.25], [101.53, 33.03], [101.68, 32.68], [101.93, 32.57], [101.75, 33.0], [101.97, 33.53], [102.5, 33.75], [102.75, 33.65], [103.0, 33.75], [103.53, 33.53], [103.75, 33.0], [103.53, 32.47], [103.0, 32.25], [102.75, 32.35], [102.5, 32.25], [102.07, 32.43], [102.25, 32.0], [102.03, 31.47], [101.68, 31.32], [101.54, 31.0], [101.75, 30.5], [101.65, 30.25], [101.75, 30.0], [101.65, 29.75], [101.75, 29.5], [101.53, 28.97], [101.0, 28.75], [100.75, 28.85], [100.5, 28.75], [100.0, 28.96], [99.68, 28.82], [99.53, 28.47], [99.0, 28.25], [98.47, 28.47], [98.32, 28.82], [98.25, 28.85], [98.0, 28.75], [97.47, 28.97], [97.32, 29.32], [96.97, 29.47], [96.75, 30.0]], [[98.25, 30.65], [98.32, 30.68], [98.35, 30.75], [98.32, 30.82], [98.25, 30.85], [98.0, 30.75], [98.25, 30.65]]]]}, "2010-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.25, 31.5], [97.47, 32.03], [98.0, 32.25], [98.25, 32.15], [98.5, 32.25], [98.75, 32.15], [98.82, 32.18], [98.97, 32.53], [99.32, 32.68], [99.47, 33.03], [100.0, 33.25], [100.5, 33.04], [101.0, 33.25], [101.53, 33.03], [101.68, 32.68], [101.93, 32.57], [101.75, 33.0], [101.97, 33.53], [102.5, 33.75], [102.75, 33.65], [103.0, 33.75], [103.53, 33.53], [103.75, 33.0], [103.53, 32.47], [103.0, 32.25], [102.75, 32.35], [102.5, 32.25], [102.07, 32.43], [102.25, 32.0], [102.03, 31.47], [101.68, 31.32], [101.54, 31.0], [101.75, 30.5], [101.65, 30.25], [101.75, 30.0], [101.65, 29.75], [101.75, 29.5], [101.53, 28.97], [101.0, 28.75], [100.47, 28.97], [100.32, 29.32], [100.2, 29.38], [100.03, 28.97], [99.5, 28.75], [99.25, 28.85], [99.0, 28.75], [98.75, 28.85], [98.5, 28.75], [97.97, 28.97], [97.82, 29.32], [97.75, 29.35], [97.5, 29.25], [96.97, 29.47], [96.75, 30.0], [96.97, 30.53], [97.32, 30.68], [97.46, 31.0], [97.25, 31.5]], [[99.75, 30.35], [99.5, 30.25], [99.8, 30.13], [99.85, 30.25], [99.82, 30.32], [99.75, 30.35]], [[99.25, 30.35], [99.13, 30.3], [99.18, 30.18], [99.25, 30.15], [99.5, 30.25], [99.25, 30.35]]]]}, "2010-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.88, 31.2], [97.75, 31.5], [97.97, 32.03], [98.5, 32.25], [98.75, 32.15], [98.82, 32.18], [98.97, 32.53], [99.32, 32.68], [99.47, 33.03], [100.0, 33.25], [100.5, 33.04], [101.0, 33.25], [101.53, 33.03], [101.75, 32.5], [101.65, 32.25], [101.75, 32.0], [101.65, 31.75], [101.75, 31.5], [101.53, 30.97], [101.0, 30.75], [100.75, 30.85], [100.5, 30.75], [99.97, 30.97], [99.82, 31.32], [99.75, 31.35], [99.68, 31.32], [99.53, 30.97], [99.0, 30.75], [98.75, 30.85], [98.63, 30.8], [98.68, 30.68], [99.03, 30.53], [99.25, 30.0], [99.03, 29.47], [98.5, 29.25], [98.25, 29.35], [98.0, 29.25], [97.75, 29.35], [97.5, 29.25], [96.97, 29.47], [96.75, 30.0], [96.97, 30.53], [97.32, 30.68], [97.47, 31.03], [97.88, 31.2]]]]}, "2010-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.47, 29.97], [97.25, 30.5], [97.47, 31.03], [98.0, 31.25], [98.53, 31.03], [98.75, 30.5], [98.53, 29.97], [98.0, 29.75], [97.47, 29.97]]], [[[100.47, 30.97], [100.25, 31.5], [100.47, 32.03], [101.0, 32.25], [101.53, 32.03], [101.75, 31.5], [101.53, 30.97], [101.0, 30.75], [100.47, 30.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -15.910767959912619}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.648373419170348}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-16.393219870370842, -17.820573898802394, -16.842135852965043, -18.155990622752483, -17.34983086793173, -16.928492914312187, -17.446086793923712, -18.06887150933082, -18.334205881987657, -17.25417594389853]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-23.954153799328537, -25.21673624293865, -25.796965169237893, -27.34878864199561, -27.42518052356141, -26.3136349750788, -25.155058364946143, -25.468553984458936, -21.920530693581895, -19.381122113404928]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.127363507129036, -9.591569556166077, -8.413105357509627, -9.558200712159708, -8.81956668902015, -8.120839582458327, -7.859352044703559, -8.177073713279851, -7.26598958139049, -7.271017038821654]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-13.330047182991507, -13.91416612976434, -13.848397580656098, -15.910767959912619, -15.334617588298926, -13.888412703096435, -12.68857954021999, -13.066940197906831, -9.54744437141386, -7.478473456510017]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1443373888858064, -2.5180441817752395, -2.1603615209383205, -2.317674097067654, -2.101320313947909, -1.9190905383592805, -1.8546240262620388, -1.9232409167682085, -1.641613375989047, -1.4431646614078621]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.5812123992696003, -4.025881806518921, -3.639283034315245, -3.8905798656448622, -3.3227961858183996, -2.703542446386626, -2.5110949596671337, -2.5751227362726, -1.9827502710020506, -1.4966963490618401]}}