{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:22.919556", "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": "2013-May-25_to_2013-May-31_97.0_59.0"}, "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": 2013050001025}, "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": "May 25 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 31 2013"}, "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": 210229.41337613112}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": 59.0}, "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": 97.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "97.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 91.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 100.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[91.25, 58.0], [91.47, 58.53], [92.0, 58.75], [92.25, 58.65], [92.32, 58.68], [92.47, 59.03], [93.0, 59.25], [93.25, 59.15], [93.32, 59.18], [93.47, 59.53], [93.82, 59.68], [93.85, 59.75], [93.75, 60.0], [93.97, 60.53], [94.5, 60.75], [94.75, 60.65], [95.0, 60.75], [95.25, 60.65], [95.5, 60.75], [95.75, 60.65], [95.82, 60.68], [95.97, 61.03], [96.5, 61.25], [97.03, 61.03], [97.18, 60.68], [97.25, 60.65], [97.5, 60.75], [97.75, 60.65], [98.0, 60.75], [98.25, 60.65], [98.5, 60.75], [99.0, 60.54], [99.5, 60.75], [100.03, 60.53], [100.18, 60.18], [100.25, 60.15], [100.5, 60.25], [101.03, 60.03], [101.25, 59.5], [101.15, 59.25], [101.25, 59.0], [101.03, 58.47], [100.5, 58.25], [100.07, 58.43], [100.25, 58.0], [100.03, 57.47], [99.68, 57.32], [99.54, 57.0], [99.75, 56.5], [99.65, 56.25], [99.75, 56.0], [99.53, 55.47], [99.0, 55.25], [98.75, 55.35], [98.68, 55.32], [98.53, 54.97], [98.0, 54.75], [97.75, 54.85], [97.5, 54.75], [97.25, 54.85], [97.0, 54.75], [96.75, 54.85], [96.5, 54.75], [96.25, 54.85], [96.0, 54.75], [95.75, 54.85], [95.5, 54.75], [94.97, 54.97], [94.82, 55.32], [94.75, 55.35], [94.5, 55.25], [94.25, 55.35], [94.0, 55.25], [93.47, 55.47], [93.32, 55.82], [93.25, 55.85], [93.0, 55.75], [92.47, 55.97], [92.25, 56.5], [92.35, 56.75], [92.32, 56.82], [91.97, 56.97], [91.82, 57.32], [91.47, 57.47], [91.25, 58.0]]]]}, "2013-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[91.25, 58.0], [91.47, 58.53], [92.0, 58.75], [92.25, 58.65], [92.32, 58.68], [92.47, 59.03], [93.0, 59.25], [93.25, 59.15], [93.32, 59.18], [93.47, 59.53], [93.82, 59.68], [93.85, 59.75], [93.75, 60.0], [93.97, 60.53], [94.5, 60.75], [94.75, 60.65], [95.0, 60.75], [95.25, 60.65], [95.5, 60.75], [95.75, 60.65], [95.82, 60.68], [95.97, 61.03], [96.5, 61.25], [97.03, 61.03], [97.18, 60.68], [97.25, 60.65], [97.5, 60.75], [97.75, 60.65], [98.0, 60.75], [98.25, 60.65], [98.5, 60.75], [99.0, 60.54], [99.5, 60.75], [100.03, 60.53], [100.18, 60.18], [100.25, 60.15], [100.5, 60.25], [101.03, 60.03], [101.25, 59.5], [101.15, 59.25], [101.25, 59.0], [101.03, 58.47], [100.5, 58.25], [100.07, 58.43], [100.25, 58.0], [100.03, 57.47], [99.68, 57.32], [99.54, 57.0], [99.75, 56.5], [99.65, 56.25], [99.75, 56.0], [99.53, 55.47], [99.0, 55.25], [98.75, 55.35], [98.68, 55.32], [98.53, 54.97], [98.0, 54.75], [97.75, 54.85], [97.5, 54.75], [97.25, 54.85], [97.0, 54.75], [96.75, 54.85], [96.5, 54.75], [96.25, 54.85], [96.0, 54.75], [95.75, 54.85], [95.5, 54.75], [94.97, 54.97], [94.82, 55.32], [94.75, 55.35], [94.5, 55.25], [94.25, 55.35], [94.0, 55.25], [93.47, 55.47], [93.32, 55.82], [93.25, 55.85], [93.0, 55.75], [92.47, 55.97], [92.25, 56.5], [92.35, 56.75], [92.32, 56.82], [91.97, 56.97], [91.82, 57.32], [91.47, 57.47], [91.25, 58.0]]]]}, "2013-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[91.25, 58.0], [91.47, 58.53], [92.0, 58.75], [92.25, 58.65], [92.32, 58.68], [92.47, 59.03], [93.0, 59.25], [93.25, 59.15], [93.32, 59.18], [93.47, 59.53], [93.82, 59.68], [93.85, 59.75], [93.75, 60.0], [93.97, 60.53], [94.5, 60.75], [94.75, 60.65], [95.0, 60.75], [95.25, 60.65], [95.5, 60.75], [95.75, 60.65], [95.82, 60.68], [95.97, 61.03], [96.5, 61.25], [97.03, 61.03], [97.18, 60.68], [97.25, 60.65], [97.5, 60.75], [97.75, 60.65], [98.0, 60.75], [98.25, 60.65], [98.5, 60.75], [99.0, 60.54], [99.5, 60.75], [100.03, 60.53], [100.18, 60.18], [100.25, 60.15], [100.5, 60.25], [101.03, 60.03], [101.25, 59.5], [101.15, 59.25], [101.25, 59.0], [101.03, 58.47], [100.5, 58.25], [100.07, 58.43], [100.25, 58.0], [100.03, 57.47], [99.68, 57.32], [99.54, 57.0], [99.75, 56.5], [99.65, 56.25], [99.75, 56.0], [99.53, 55.47], [99.0, 55.25], [98.75, 55.35], [98.68, 55.32], [98.53, 54.97], [98.0, 54.75], [97.75, 54.85], [97.5, 54.75], [97.25, 54.85], [97.0, 54.75], [96.75, 54.85], [96.5, 54.75], [96.25, 54.85], [96.0, 54.75], [95.75, 54.85], [95.5, 54.75], [94.97, 54.97], [94.82, 55.32], [94.75, 55.35], [94.5, 55.25], [94.25, 55.35], [94.0, 55.25], [93.47, 55.47], [93.32, 55.82], [93.25, 55.85], [93.0, 55.75], [92.47, 55.97], [92.25, 56.5], [92.35, 56.75], [92.32, 56.82], [91.97, 56.97], [91.82, 57.32], [91.47, 57.47], [91.25, 58.0]]]]}, "2013-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.25, 58.5], [92.47, 59.03], [92.82, 59.18], [92.97, 59.53], [93.5, 59.75], [93.75, 59.65], [93.82, 59.68], [93.85, 59.75], [93.75, 60.0], [93.97, 60.53], [94.5, 60.75], [94.75, 60.65], [95.0, 60.75], [95.25, 60.65], [95.5, 60.75], [96.03, 60.53], [96.18, 60.18], [96.25, 60.15], [96.5, 60.25], [96.75, 60.15], [97.0, 60.25], [97.25, 60.15], [97.5, 60.25], [97.75, 60.15], [98.0, 60.25], [98.25, 60.15], [98.5, 60.25], [99.03, 60.03], [99.18, 59.68], [99.53, 59.53], [99.75, 59.0], [99.65, 58.75], [99.75, 58.5], [99.65, 58.25], [99.75, 58.0], [99.53, 57.47], [99.0, 57.25], [98.75, 57.35], [98.68, 57.32], [98.53, 56.97], [98.0, 56.75], [97.75, 56.85], [97.5, 56.75], [97.25, 56.85], [97.0, 56.75], [96.75, 56.85], [96.5, 56.75], [96.25, 56.85], [96.0, 56.75], [95.47, 56.97], [95.32, 57.32], [95.25, 57.35], [95.0, 57.25], [94.75, 57.35], [94.5, 57.25], [94.25, 57.35], [94.0, 57.25], [93.75, 57.35], [93.5, 57.25], [92.97, 57.47], [92.82, 57.82], [92.47, 57.97], [92.25, 58.5]]]]}, "2013-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.25, 58.5], [92.47, 59.03], [92.82, 59.18], [92.97, 59.53], [93.5, 59.75], [93.75, 59.65], [93.82, 59.68], [93.85, 59.75], [93.75, 60.0], [93.97, 60.53], [94.5, 60.75], [94.75, 60.65], [95.0, 60.75], [95.25, 60.65], [95.5, 60.75], [96.03, 60.53], [96.18, 60.18], [96.25, 60.15], [96.5, 60.25], [96.75, 60.15], [97.0, 60.25], [97.25, 60.15], [97.5, 60.25], [97.75, 60.15], [98.0, 60.25], [98.25, 60.15], [98.5, 60.25], [99.03, 60.03], [99.18, 59.68], [99.53, 59.53], [99.68, 59.18], [100.03, 59.03], [100.18, 58.68], [100.25, 58.65], [100.5, 58.75], [101.03, 58.53], [101.25, 58.0], [101.03, 57.47], [100.68, 57.32], [100.53, 56.97], [100.0, 56.75], [99.75, 56.85], [99.5, 56.75], [98.97, 56.97], [98.82, 57.32], [98.75, 57.35], [98.68, 57.32], [98.53, 56.97], [98.0, 56.75], [97.75, 56.85], [97.5, 56.75], [97.25, 56.85], [97.0, 56.75], [96.75, 56.85], [96.5, 56.75], [96.25, 56.85], [96.0, 56.75], [95.47, 56.97], [95.32, 57.32], [95.25, 57.35], [95.0, 57.25], [94.75, 57.35], [94.5, 57.25], [94.25, 57.35], [94.0, 57.25], [93.75, 57.35], [93.5, 57.25], [92.97, 57.47], [92.82, 57.82], [92.47, 57.97], [92.25, 58.5]]]]}, "2013-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.25, 58.5], [92.47, 59.03], [92.82, 59.18], [92.97, 59.53], [93.5, 59.75], [94.0, 59.54], [94.5, 59.75], [94.75, 59.65], [94.82, 59.68], [94.97, 60.03], [95.5, 60.25], [95.75, 60.15], [96.0, 60.25], [96.25, 60.15], [96.5, 60.25], [96.75, 60.15], [97.0, 60.25], [97.25, 60.15], [97.5, 60.25], [97.75, 60.15], [98.0, 60.25], [98.25, 60.15], [98.5, 60.25], [99.03, 60.03], [99.18, 59.68], [99.53, 59.53], [99.68, 59.18], [100.03, 59.03], [100.18, 58.68], [100.25, 58.65], [100.5, 58.75], [101.03, 58.53], [101.25, 58.0], [101.03, 57.47], [100.68, 57.32], [100.53, 56.97], [100.0, 56.75], [99.75, 56.85], [99.5, 56.75], [98.97, 56.97], [98.82, 57.32], [98.75, 57.35], [98.68, 57.32], [98.53, 56.97], [98.0, 56.75], [97.75, 56.85], [97.5, 56.75], [97.25, 56.85], [97.0, 56.75], [96.75, 56.85], [96.5, 56.75], [96.25, 56.85], [96.0, 56.75], [95.47, 56.97], [95.32, 57.32], [95.25, 57.35], [95.0, 57.25], [94.75, 57.35], [94.5, 57.25], [94.25, 57.35], [94.0, 57.25], [93.75, 57.35], [93.5, 57.25], [92.97, 57.47], [92.82, 57.82], [92.47, 57.97], [92.25, 58.5]]]]}, "2013-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.47, 58.47], [95.25, 59.0], [95.47, 59.53], [96.0, 59.75], [96.25, 59.65], [96.5, 59.75], [96.75, 59.65], [97.0, 59.75], [97.25, 59.65], [97.5, 59.75], [98.03, 59.53], [98.25, 59.0], [98.13, 58.7], [98.25, 58.65], [98.5, 58.75], [98.8, 58.63], [98.97, 59.03], [99.5, 59.25], [100.03, 59.03], [100.18, 58.68], [100.25, 58.65], [100.5, 58.75], [101.03, 58.53], [101.25, 58.0], [101.03, 57.47], [100.68, 57.32], [100.53, 56.97], [100.0, 56.75], [99.75, 56.85], [99.5, 56.75], [98.97, 56.97], [98.8, 57.38], [98.5, 57.25], [98.25, 57.35], [98.0, 57.25], [97.75, 57.35], [97.5, 57.25], [97.25, 57.35], [97.0, 57.25], [96.47, 57.47], [96.25, 58.0], [96.38, 58.3], [96.25, 58.35], [96.0, 58.25], [95.47, 58.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.383071125560264}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.545561358289123}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.395754589322678, 3.537781568976243, 4.0228890395944745, 3.52250705192489, 3.5244752873874745, 4.827582746977441, 6.820086181603926]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-1.175472249429788, 0.2706630135025989, 1.2620402564475057, 1.1839865512900474, 1.0364460110533287, 3.2202046522977525, 5.638917637725513]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.486446249124075, -7.485058793758565, -7.1618907202566655, -7.350017215498782, -7.717583333109617, -6.910490134486377, -5.683638882404933]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.330618685233446, -10.383071125560264, -8.620503097721837, -8.75358770449833, -8.866166686083716, -8.14810698461946, -6.0681064816581625]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7864333352375856, -1.6183715638801892, -1.5693465598963914, -1.620599315846122, -1.7180160109428422, -1.5403808464891515, -1.2861570934418949]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.194584496231205, -2.2568620655929976, -1.9013923605608498, -1.941305781356565, -1.9105102376405354, -1.7437232743895292, -1.3616653263581657]}}