{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:23.910890", "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": "2012-Jan-25_to_2012-Jan-30_70.5_16.5"}, "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": 2012010001301}, "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 25 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 30 2012"}, "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": 356933.03358692536}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Sea", "S.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": ["Arabian Sea"]}, "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": 16.5}, "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": 70.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "70.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 60.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 74.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.97, 10.53], [61.32, 10.68], [61.47, 11.03], [62.0, 11.25], [62.3, 11.13], [62.35, 11.25], [62.25, 11.5], [62.35, 11.75], [62.25, 12.0], [62.47, 12.53], [62.82, 12.68], [62.97, 13.03], [63.32, 13.18], [63.35, 13.25], [63.25, 13.5], [63.47, 14.03], [64.0, 14.25], [64.25, 14.15], [64.32, 14.18], [64.47, 14.53], [65.0, 14.75], [65.25, 14.65], [65.32, 14.68], [65.47, 15.03], [66.0, 15.25], [66.53, 15.03], [66.75, 14.5], [66.65, 14.25], [66.75, 14.0], [66.65, 13.75], [66.75, 13.5], [66.65, 13.25], [66.75, 13.0], [66.65, 12.75], [66.75, 12.5], [66.53, 11.97], [66.0, 11.75], [65.75, 11.85], [65.5, 11.75], [65.25, 11.85], [65.18, 11.82], [65.03, 11.47], [64.68, 11.32], [64.53, 10.97], [64.18, 10.82], [64.03, 10.47], [63.68, 10.32], [63.53, 9.97], [63.18, 9.82], [63.15, 9.75], [63.25, 9.5], [63.03, 8.97], [62.5, 8.75], [62.25, 8.85], [62.0, 8.75], [61.75, 8.85], [61.68, 8.82], [61.53, 8.47], [61.0, 8.25], [60.75, 8.35], [60.5, 8.25], [59.97, 8.47], [59.75, 9.0], [59.97, 9.53], [60.32, 9.68], [60.47, 10.03], [60.82, 10.18], [60.97, 10.53]]], [[[69.97, 15.97], [69.75, 16.5], [69.97, 17.03], [70.5, 17.25], [71.03, 17.03], [71.25, 16.5], [71.03, 15.97], [70.5, 15.75], [69.97, 15.97]]]]}, "2012-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.82, 10.18], [60.97, 10.53], [61.32, 10.68], [61.47, 11.03], [62.0, 11.25], [62.3, 11.13], [62.35, 11.25], [62.25, 11.5], [62.35, 11.75], [62.25, 12.0], [62.47, 12.53], [62.82, 12.68], [62.97, 13.03], [63.32, 13.18], [63.35, 13.25], [63.25, 13.5], [63.47, 14.03], [64.0, 14.25], [64.25, 14.15], [64.32, 14.18], [64.47, 14.53], [65.0, 14.75], [65.25, 14.65], [65.32, 14.68], [65.47, 15.03], [66.0, 15.25], [66.53, 15.03], [66.68, 14.68], [66.75, 14.65], [67.0, 14.75], [67.3, 14.63], [67.47, 15.03], [68.0, 15.25], [68.25, 15.15], [68.32, 15.18], [68.35, 15.25], [68.25, 15.5], [68.35, 15.75], [68.25, 16.0], [68.35, 16.25], [68.25, 16.5], [68.35, 16.75], [68.25, 17.0], [68.38, 17.3], [68.25, 17.35], [68.0, 17.25], [67.75, 17.35], [67.5, 17.25], [66.97, 17.47], [66.75, 18.0], [66.97, 18.53], [67.5, 18.75], [67.75, 18.65], [68.0, 18.75], [68.25, 18.65], [68.5, 18.75], [69.03, 18.53], [69.2, 18.13], [69.5, 18.25], [70.03, 18.03], [70.18, 17.68], [70.25, 17.65], [70.5, 17.75], [71.03, 17.53], [71.25, 17.0], [71.15, 16.75], [71.25, 16.5], [71.15, 16.25], [71.25, 16.0], [71.15, 15.75], [71.25, 15.5], [71.03, 14.97], [70.5, 14.75], [70.25, 14.85], [70.18, 14.82], [70.03, 14.47], [69.68, 14.32], [69.65, 14.25], [69.75, 14.0], [69.53, 13.47], [69.18, 13.32], [69.03, 12.97], [68.5, 12.75], [68.25, 12.85], [68.18, 12.82], [68.15, 12.75], [68.25, 12.5], [68.03, 11.97], [67.68, 11.82], [67.53, 11.47], [67.18, 11.32], [67.03, 10.97], [66.68, 10.82], [66.53, 10.47], [66.18, 10.32], [66.03, 9.97], [65.68, 9.82], [65.53, 9.47], [65.18, 9.32], [65.03, 8.97], [64.5, 8.75], [63.97, 8.97], [63.75, 9.5], [63.96, 10.0], [63.8, 10.37], [63.68, 10.32], [63.65, 10.25], [63.75, 10.0], [63.53, 9.47], [63.18, 9.32], [63.03, 8.97], [62.68, 8.82], [62.53, 8.47], [62.0, 8.25], [61.75, 8.35], [61.5, 8.25], [61.25, 8.35], [61.0, 8.25], [60.75, 8.35], [60.5, 8.25], [59.97, 8.47], [59.75, 9.0], [59.97, 9.53], [60.32, 9.68], [60.47, 10.03], [60.82, 10.18]]]]}, "2012-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.97, 10.53], [61.32, 10.68], [61.47, 11.03], [62.0, 11.25], [62.3, 11.13], [62.35, 11.25], [62.25, 11.5], [62.35, 11.75], [62.25, 12.0], [62.47, 12.53], [62.82, 12.68], [62.97, 13.03], [63.32, 13.18], [63.35, 13.25], [63.25, 13.5], [63.47, 14.03], [64.0, 14.25], [64.25, 14.15], [64.32, 14.18], [64.47, 14.53], [65.0, 14.75], [65.25, 14.65], [65.32, 14.68], [65.47, 15.03], [66.0, 15.25], [66.53, 15.03], [66.68, 14.68], [66.75, 14.65], [67.0, 14.75], [67.3, 14.63], [67.47, 15.03], [68.0, 15.25], [68.25, 15.15], [68.32, 15.18], [68.35, 15.25], [68.25, 15.5], [68.35, 15.75], [68.25, 16.0], [68.35, 16.25], [68.25, 16.5], [68.35, 16.75], [68.32, 16.82], [67.97, 16.97], [67.82, 17.32], [67.75, 17.35], [67.5, 17.25], [66.97, 17.47], [66.75, 18.0], [66.97, 18.53], [67.5, 18.75], [67.75, 18.65], [68.0, 18.75], [68.25, 18.65], [68.5, 18.75], [69.03, 18.53], [69.2, 18.13], [69.5, 18.25], [70.03, 18.03], [70.18, 17.68], [70.25, 17.65], [70.5, 17.75], [71.03, 17.53], [71.25, 17.0], [71.15, 16.75], [71.25, 16.5], [71.15, 16.25], [71.25, 16.0], [71.15, 15.75], [71.25, 15.5], [71.03, 14.97], [70.5, 14.75], [70.25, 14.85], [70.18, 14.82], [70.03, 14.47], [69.68, 14.32], [69.65, 14.25], [69.75, 14.0], [69.53, 13.47], [69.18, 13.32], [69.03, 12.97], [68.5, 12.75], [68.25, 12.85], [68.18, 12.82], [68.15, 12.75], [68.25, 12.5], [68.03, 11.97], [67.68, 11.82], [67.53, 11.47], [67.18, 11.32], [67.03, 10.97], [66.68, 10.82], [66.53, 10.47], [66.18, 10.32], [66.03, 9.97], [65.68, 9.82], [65.53, 9.47], [65.18, 9.32], [65.03, 8.97], [64.5, 8.75], [63.97, 8.97], [63.75, 9.5], [63.96, 10.0], [63.8, 10.37], [63.68, 10.32], [63.65, 10.25], [63.75, 10.0], [63.53, 9.47], [63.18, 9.32], [63.03, 8.97], [62.68, 8.82], [62.53, 8.47], [62.0, 8.25], [61.75, 8.35], [61.5, 8.25], [61.25, 8.35], [61.0, 8.25], [60.75, 8.35], [60.5, 8.25], [59.97, 8.47], [59.75, 9.0], [59.97, 9.53], [60.32, 9.68], [60.47, 10.03], [60.82, 10.18], [60.97, 10.53]]], [[[72.97, 15.97], [72.75, 16.5], [72.97, 17.03], [73.5, 17.25], [74.03, 17.03], [74.25, 16.5], [74.03, 15.97], [73.5, 15.75], [72.97, 15.97]]]]}, "2012-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.85, 9.75], [60.75, 10.0], [60.97, 10.53], [61.32, 10.68], [61.47, 11.03], [62.0, 11.25], [62.3, 11.13], [62.35, 11.25], [62.25, 11.5], [62.35, 11.75], [62.25, 12.0], [62.47, 12.53], [62.82, 12.68], [62.97, 13.03], [63.32, 13.18], [63.35, 13.25], [63.25, 13.5], [63.47, 14.03], [64.0, 14.25], [64.25, 14.15], [64.32, 14.18], [64.47, 14.53], [65.0, 14.75], [65.25, 14.65], [65.32, 14.68], [65.47, 15.03], [66.0, 15.25], [66.53, 15.03], [66.68, 14.68], [66.75, 14.65], [67.0, 14.75], [67.3, 14.63], [67.47, 15.03], [68.0, 15.25], [68.25, 15.15], [68.32, 15.18], [68.35, 15.25], [68.25, 15.5], [68.35, 15.75], [68.25, 16.0], [68.35, 16.25], [68.25, 16.5], [68.35, 16.75], [68.32, 16.82], [67.97, 16.97], [67.82, 17.32], [67.75, 17.35], [67.5, 17.25], [66.97, 17.47], [66.75, 18.0], [66.97, 18.53], [67.5, 18.75], [67.75, 18.65], [68.0, 18.75], [68.25, 18.65], [68.5, 18.75], [69.03, 18.53], [69.2, 18.13], [69.5, 18.25], [70.03, 18.03], [70.18, 17.68], [70.25, 17.65], [70.5, 17.75], [70.75, 17.65], [70.82, 17.68], [70.97, 18.03], [71.32, 18.18], [71.47, 18.53], [71.82, 18.68], [71.85, 18.75], [71.75, 19.0], [71.97, 19.53], [72.5, 19.75], [73.03, 19.53], [73.25, 19.0], [73.15, 18.75], [73.18, 18.68], [73.53, 18.53], [73.68, 18.18], [74.03, 18.03], [74.25, 17.5], [74.15, 17.25], [74.25, 17.0], [74.15, 16.75], [74.18, 16.68], [74.53, 16.53], [74.75, 16.0], [74.65, 15.75], [74.75, 15.5], [74.53, 14.97], [74.0, 14.75], [73.47, 14.97], [73.25, 15.5], [73.35, 15.75], [73.32, 15.82], [72.97, 15.97], [72.75, 16.5], [72.85, 16.75], [72.82, 16.82], [72.75, 16.85], [72.5, 16.75], [72.25, 16.85], [72.18, 16.82], [72.15, 16.75], [72.25, 16.5], [72.15, 16.25], [72.25, 16.0], [72.03, 15.47], [71.5, 15.25], [71.25, 15.35], [71.18, 15.32], [71.03, 14.97], [70.5, 14.75], [70.25, 14.85], [70.18, 14.82], [70.03, 14.47], [69.68, 14.32], [69.65, 14.25], [69.75, 14.0], [69.53, 13.47], [69.18, 13.32], [69.03, 12.97], [68.5, 12.75], [68.25, 12.85], [68.18, 12.82], [68.15, 12.75], [68.25, 12.5], [68.03, 11.97], [67.68, 11.82], [67.53, 11.47], [67.18, 11.32], [67.03, 10.97], [66.68, 10.82], [66.53, 10.47], [66.18, 10.32], [66.03, 9.97], [65.68, 9.82], [65.53, 9.47], [65.18, 9.32], [65.03, 8.97], [64.5, 8.75], [63.97, 8.97], [63.75, 9.5], [63.96, 10.0], [63.8, 10.37], [63.68, 10.32], [63.65, 10.25], [63.75, 10.0], [63.53, 9.47], [63.18, 9.32], [63.03, 8.97], [62.68, 8.82], [62.53, 8.47], [62.0, 8.25], [61.75, 8.35], [61.5, 8.25], [60.97, 8.47], [60.75, 9.0], [60.85, 9.25], [60.75, 9.5], [60.85, 9.75]]]]}, "2012-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.75, 17.5], [67.97, 18.03], [68.5, 18.25], [69.0, 18.04], [69.5, 18.25], [70.03, 18.03], [70.18, 17.68], [70.25, 17.65], [70.5, 17.75], [70.75, 17.65], [70.82, 17.68], [70.97, 18.03], [71.32, 18.18], [71.47, 18.53], [71.82, 18.68], [71.85, 18.75], [71.75, 19.0], [71.97, 19.53], [72.5, 19.75], [73.03, 19.53], [73.25, 19.0], [73.15, 18.75], [73.18, 18.68], [73.53, 18.53], [73.68, 18.18], [74.03, 18.03], [74.25, 17.5], [74.15, 17.25], [74.25, 17.0], [74.15, 16.75], [74.18, 16.68], [74.53, 16.53], [74.75, 16.0], [74.65, 15.75], [74.75, 15.5], [74.53, 14.97], [74.0, 14.75], [73.47, 14.97], [73.25, 15.5], [73.35, 15.75], [73.32, 15.82], [72.97, 15.97], [72.75, 16.5], [72.85, 16.75], [72.82, 16.82], [72.75, 16.85], [72.5, 16.75], [72.25, 16.85], [72.18, 16.82], [72.15, 16.75], [72.25, 16.5], [72.15, 16.25], [72.25, 16.0], [72.03, 15.47], [71.5, 15.25], [71.25, 15.35], [71.18, 15.32], [71.03, 14.97], [70.5, 14.75], [70.0, 14.96], [69.5, 14.75], [69.25, 14.85], [69.0, 14.75], [68.47, 14.97], [68.25, 15.5], [68.35, 15.75], [68.25, 16.0], [68.35, 16.25], [68.25, 16.5], [68.35, 16.75], [68.32, 16.82], [67.97, 16.97], [67.75, 17.5]]]]}, "2012-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.47, 14.97], [68.25, 15.5], [68.47, 16.03], [69.0, 16.25], [69.25, 16.15], [69.32, 16.18], [69.47, 16.53], [69.82, 16.68], [69.97, 17.03], [70.32, 17.18], [70.47, 17.53], [70.82, 17.68], [70.97, 18.03], [71.32, 18.18], [71.47, 18.53], [71.82, 18.68], [71.85, 18.75], [71.75, 19.0], [71.97, 19.53], [72.5, 19.75], [73.03, 19.53], [73.25, 19.0], [73.15, 18.75], [73.18, 18.68], [73.53, 18.53], [73.68, 18.18], [74.03, 18.03], [74.25, 17.5], [74.15, 17.25], [74.25, 17.0], [74.15, 16.75], [74.18, 16.68], [74.53, 16.53], [74.75, 16.0], [74.65, 15.75], [74.75, 15.5], [74.53, 14.97], [74.0, 14.75], [73.47, 14.97], [73.25, 15.5], [73.35, 15.75], [73.32, 15.82], [72.97, 15.97], [72.75, 16.5], [72.85, 16.75], [72.82, 16.82], [72.75, 16.85], [72.5, 16.75], [72.25, 16.85], [72.18, 16.82], [72.15, 16.75], [72.25, 16.5], [72.15, 16.25], [72.25, 16.0], [72.03, 15.47], [71.5, 15.25], [71.25, 15.35], [71.18, 15.32], [71.03, 14.97], [70.5, 14.75], [70.0, 14.96], [69.5, 14.75], [69.25, 14.85], [69.0, 14.75], [68.47, 14.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1880525090944616}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1919651742411532}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.33742288403249, 24.412402312340475, 24.490989953893404, 24.240814234917707, 23.5783777537834, 23.784871591068622]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.57940623742212, 23.101128866935426, 22.855514343481957, 20.93272448482935, 20.194478928877118, 20.9691761102182]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9952882177024233, -1.0843089057417512, -1.019218599722434, -1.222517993883683, -1.7682584535510826, -1.615878580775783]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.299655323866375, -1.2911658879896208, -1.6288826563366001, -2.764539934776508, -3.1880525090944616, -2.4882445533946225]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7609710700088974, -1.795303039244253, -1.5680633255194412, -1.6758703023966364, -1.7150797448991786, -1.528993920346964]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.270539599412498, -2.632844130772591, -1.8668152377331875, -2.3208528586370107, -2.1255574195401494, -1.674091119844397]}}