{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:25.766032", "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-Aug-21_to_2010-Aug-27_83.5_29.0"}, "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": 2010080000951}, "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": "August 21 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 27 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 164676.46999142395}, "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", "India", "Nepal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 29.0}, "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": 83.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "83.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 79.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 88.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.97, 27.53], [85.5, 27.75], [85.75, 27.65], [86.0, 27.75], [86.53, 27.53], [86.75, 27.0], [86.53, 26.47], [86.18, 26.32], [86.03, 25.97], [85.5, 25.75], [84.97, 25.97], [84.75, 26.5], [84.85, 26.75], [84.75, 27.0], [84.97, 27.53]]]]}, "2010-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.97, 29.03], [80.32, 29.18], [80.47, 29.53], [81.0, 29.75], [81.53, 29.53], [81.68, 29.18], [82.03, 29.03], [82.18, 28.68], [82.25, 28.65], [82.5, 28.75], [82.75, 28.65], [83.0, 28.75], [83.25, 28.65], [83.5, 28.75], [83.75, 28.65], [84.0, 28.75], [84.25, 28.65], [84.5, 28.75], [85.03, 28.53], [85.18, 28.18], [85.25, 28.15], [85.5, 28.25], [86.03, 28.03], [86.18, 27.68], [86.25, 27.65], [86.5, 27.75], [87.03, 27.53], [87.18, 27.18], [87.25, 27.15], [87.5, 27.25], [87.75, 27.15], [88.0, 27.25], [88.53, 27.03], [88.75, 26.5], [88.65, 26.25], [88.75, 26.0], [88.53, 25.47], [88.0, 25.25], [87.75, 25.35], [87.5, 25.25], [87.25, 25.35], [87.0, 25.25], [86.75, 25.35], [86.5, 25.25], [86.25, 25.35], [86.0, 25.25], [85.75, 25.35], [85.5, 25.25], [85.25, 25.35], [85.0, 25.25], [84.47, 25.47], [84.25, 26.0], [84.35, 26.25], [84.32, 26.32], [84.25, 26.35], [84.0, 26.25], [83.5, 26.46], [83.0, 26.25], [82.75, 26.35], [82.5, 26.25], [81.97, 26.47], [81.82, 26.82], [81.75, 26.85], [81.5, 26.75], [81.25, 26.85], [81.0, 26.75], [80.75, 26.85], [80.5, 26.75], [80.25, 26.85], [80.0, 26.75], [79.47, 26.97], [79.25, 27.5], [79.47, 28.03], [79.88, 28.2], [79.75, 28.5], [79.97, 29.03]]]]}, "2010-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 27.5], [79.47, 28.03], [79.88, 28.2], [79.75, 28.5], [79.97, 29.03], [80.32, 29.18], [80.47, 29.53], [81.0, 29.75], [81.53, 29.53], [81.68, 29.18], [82.03, 29.03], [82.18, 28.68], [82.25, 28.65], [82.5, 28.75], [82.75, 28.65], [83.0, 28.75], [83.25, 28.65], [83.32, 28.68], [83.47, 29.03], [83.82, 29.18], [83.97, 29.53], [84.5, 29.75], [84.75, 29.65], [85.0, 29.75], [85.53, 29.53], [85.68, 29.18], [85.75, 29.15], [86.0, 29.25], [86.53, 29.03], [86.75, 28.5], [86.53, 27.97], [86.13, 27.8], [86.18, 27.68], [86.25, 27.65], [86.5, 27.75], [87.03, 27.53], [87.18, 27.18], [87.25, 27.15], [87.5, 27.25], [87.75, 27.15], [88.0, 27.25], [88.53, 27.03], [88.75, 26.5], [88.65, 26.25], [88.75, 26.0], [88.53, 25.47], [88.0, 25.25], [87.75, 25.35], [87.5, 25.25], [87.25, 25.35], [87.0, 25.25], [86.75, 25.35], [86.5, 25.25], [86.25, 25.35], [86.0, 25.25], [85.75, 25.35], [85.5, 25.25], [85.25, 25.35], [85.0, 25.25], [84.47, 25.47], [84.25, 26.0], [84.35, 26.25], [84.32, 26.32], [84.25, 26.35], [84.0, 26.25], [83.5, 26.46], [83.0, 26.25], [82.75, 26.35], [82.5, 26.25], [82.25, 26.35], [82.18, 26.32], [82.03, 25.97], [81.5, 25.75], [81.25, 25.85], [81.0, 25.75], [80.47, 25.97], [80.32, 26.32], [79.97, 26.47], [79.82, 26.82], [79.47, 26.97], [79.25, 27.5]]]]}, "2010-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 27.5], [79.47, 28.03], [79.88, 28.2], [79.75, 28.5], [79.97, 29.03], [80.32, 29.18], [80.47, 29.53], [81.0, 29.75], [81.53, 29.53], [81.68, 29.18], [82.03, 29.03], [82.18, 28.68], [82.25, 28.65], [82.5, 28.75], [82.75, 28.65], [82.88, 28.7], [82.75, 29.0], [82.97, 29.53], [83.5, 29.75], [84.0, 29.54], [84.5, 29.75], [84.75, 29.65], [85.0, 29.75], [85.53, 29.53], [85.68, 29.18], [85.75, 29.15], [86.0, 29.25], [86.53, 29.03], [86.75, 28.5], [86.53, 27.97], [86.13, 27.8], [86.18, 27.68], [86.25, 27.65], [86.5, 27.75], [87.03, 27.53], [87.18, 27.18], [87.25, 27.15], [87.5, 27.25], [87.75, 27.15], [88.0, 27.25], [88.53, 27.03], [88.75, 26.5], [88.65, 26.25], [88.75, 26.0], [88.53, 25.47], [88.0, 25.25], [87.75, 25.35], [87.5, 25.25], [87.25, 25.35], [87.0, 25.25], [86.75, 25.35], [86.5, 25.25], [86.25, 25.35], [86.0, 25.25], [85.75, 25.35], [85.5, 25.25], [85.25, 25.35], [85.0, 25.25], [84.47, 25.47], [84.25, 26.0], [84.35, 26.25], [84.32, 26.32], [84.25, 26.35], [84.0, 26.25], [83.5, 26.46], [83.0, 26.25], [82.75, 26.35], [82.5, 26.25], [82.25, 26.35], [82.18, 26.32], [82.03, 25.97], [81.5, 25.75], [81.25, 25.85], [81.0, 25.75], [80.47, 25.97], [80.32, 26.32], [79.97, 26.47], [79.82, 26.82], [79.47, 26.97], [79.25, 27.5]]]]}, "2010-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 27.5], [79.47, 28.03], [79.88, 28.2], [79.75, 28.5], [79.97, 29.03], [80.32, 29.18], [80.47, 29.53], [81.0, 29.75], [81.53, 29.53], [81.68, 29.18], [82.03, 29.03], [82.18, 28.68], [82.25, 28.65], [82.5, 28.75], [82.93, 28.57], [82.75, 29.0], [82.97, 29.53], [83.5, 29.75], [84.0, 29.54], [84.5, 29.75], [84.75, 29.65], [85.0, 29.75], [85.53, 29.53], [85.68, 29.18], [85.75, 29.15], [86.0, 29.25], [86.53, 29.03], [86.75, 28.5], [86.53, 27.97], [86.0, 27.75], [85.75, 27.85], [85.5, 27.75], [85.25, 27.85], [85.0, 27.75], [84.75, 27.85], [84.5, 27.75], [84.25, 27.85], [84.0, 27.75], [83.47, 27.97], [83.32, 28.32], [83.07, 28.43], [83.25, 28.0], [83.03, 27.47], [82.68, 27.32], [82.65, 27.25], [82.75, 27.0], [82.53, 26.47], [82.18, 26.32], [82.03, 25.97], [81.5, 25.75], [81.25, 25.85], [81.0, 25.75], [80.47, 25.97], [80.32, 26.32], [79.97, 26.47], [79.82, 26.82], [79.47, 26.97], [79.25, 27.5]]]]}, "2010-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.5, 29.75], [84.03, 29.53], [84.25, 29.0], [84.03, 28.47], [83.5, 28.25], [82.97, 28.47], [82.75, 29.0], [82.97, 29.53], [83.5, 29.75]]]]}, "2010-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.5, 29.75], [84.03, 29.53], [84.25, 29.0], [84.03, 28.47], [83.5, 28.25], [82.97, 28.47], [82.75, 29.0], [82.97, 29.53], [83.5, 29.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.155163379665964}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1163765047970466}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.66584705356496, 25.7438745329398, 23.314119436242777, 22.837971648303153, 19.539325111826088, 1.5969141214097249, 1.8488305867496706]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.893042546780578, 21.25322046223306, 1.1453280666324304, 0.9534788694481904, -0.2064350538575468, 1.5969141214097249, 1.8488305867496706]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.626349358184844, -2.061004358331135, -2.0920839554403456, -2.2015684289181867, -2.1419895544912246, -2.0556013260936083, -1.8245444838031517]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7231611484690461, -2.7215322101693005, -4.155163379665964, -3.186910782215193, -3.8363783408631775, -2.0556013260936083, -1.8245444838031517]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4690582901388032, -1.853487236826932, -1.857579903363558, -1.9376966080519944, -1.9756030002245122, -1.929639961179288, -1.7346683762907424]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4959311761146705, -2.375991823441411, -4.065999121963292, -2.779610901046327, -3.567896490756991, -1.929639961179288, -1.7346683762907424]}}