{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:24.614402", "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": "2014-May-23_to_2014-May-26_252.5_35.0"}, "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": 2014050000923}, "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 23 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 26 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 111517.93288561108}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "N.Central-America", "W.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": 35.0}, "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": 252.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "252.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 251.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.5, 33.75], [-104.97, 33.53], [-104.75, 33.0], [-104.97, 32.47], [-105.5, 32.25], [-106.03, 32.47], [-106.25, 33.0], [-106.03, 33.53], [-105.5, 33.75]]]]}, "2014-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 37.03], [-108.5, 37.25], [-108.25, 37.15], [-108.0, 37.25], [-107.75, 37.15], [-107.5, 37.25], [-107.25, 37.15], [-107.0, 37.25], [-106.47, 37.03], [-106.32, 36.68], [-106.25, 36.65], [-106.0, 36.75], [-105.75, 36.65], [-105.5, 36.75], [-104.97, 36.53], [-104.75, 36.0], [-104.85, 35.75], [-104.82, 35.68], [-104.75, 35.65], [-104.5, 35.75], [-103.97, 35.53], [-103.82, 35.18], [-103.47, 35.03], [-103.32, 34.68], [-103.25, 34.65], [-103.0, 34.75], [-102.47, 34.53], [-102.25, 34.0], [-102.47, 33.47], [-103.0, 33.25], [-103.25, 33.35], [-103.32, 33.32], [-103.47, 32.97], [-103.82, 32.82], [-103.97, 32.47], [-104.5, 32.25], [-105.0, 32.46], [-105.5, 32.25], [-106.03, 32.47], [-106.25, 33.0], [-106.15, 33.25], [-106.25, 33.5], [-106.15, 33.75], [-106.25, 34.0], [-106.15, 34.25], [-106.18, 34.32], [-106.25, 34.35], [-106.5, 34.25], [-106.75, 34.35], [-106.82, 34.32], [-106.85, 34.25], [-106.75, 34.0], [-106.97, 33.47], [-107.5, 33.25], [-108.03, 33.47], [-108.18, 33.82], [-108.53, 33.97], [-108.75, 34.5], [-108.65, 34.75], [-108.75, 35.0], [-108.65, 35.25], [-108.68, 35.32], [-109.03, 35.47], [-109.25, 36.0], [-109.15, 36.25], [-109.25, 36.5], [-109.03, 37.03]]]]}, "2014-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 37.03], [-108.5, 37.25], [-108.25, 37.15], [-108.0, 37.25], [-107.75, 37.15], [-107.5, 37.25], [-107.25, 37.15], [-107.0, 37.25], [-106.47, 37.03], [-106.32, 36.68], [-106.25, 36.65], [-106.0, 36.75], [-105.75, 36.65], [-105.5, 36.75], [-104.97, 36.53], [-104.75, 36.0], [-104.85, 35.75], [-104.82, 35.68], [-104.75, 35.65], [-104.5, 35.75], [-103.97, 35.53], [-103.82, 35.18], [-103.47, 35.03], [-103.32, 34.68], [-103.25, 34.65], [-103.0, 34.75], [-102.47, 34.53], [-102.25, 34.0], [-102.47, 33.47], [-103.0, 33.25], [-103.25, 33.35], [-103.32, 33.32], [-103.47, 32.97], [-103.82, 32.82], [-103.97, 32.47], [-104.5, 32.25], [-105.0, 32.46], [-105.5, 32.25], [-106.03, 32.47], [-106.25, 33.0], [-106.15, 33.25], [-106.25, 33.5], [-106.15, 33.75], [-106.25, 34.0], [-106.15, 34.25], [-106.18, 34.32], [-106.25, 34.35], [-106.5, 34.25], [-106.75, 34.35], [-106.82, 34.32], [-106.85, 34.25], [-106.75, 34.0], [-106.97, 33.47], [-107.5, 33.25], [-108.03, 33.47], [-108.18, 33.82], [-108.53, 33.97], [-108.75, 34.5], [-108.65, 34.75], [-108.75, 35.0], [-108.65, 35.25], [-108.68, 35.32], [-109.03, 35.47], [-109.25, 36.0], [-109.15, 36.25], [-109.25, 36.5], [-109.03, 37.03]]]]}, "2014-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 37.03], [-108.5, 37.25], [-108.25, 37.15], [-108.0, 37.25], [-107.75, 37.15], [-107.5, 37.25], [-107.25, 37.15], [-107.0, 37.25], [-106.47, 37.03], [-106.32, 36.68], [-106.25, 36.65], [-106.0, 36.75], [-105.75, 36.65], [-105.5, 36.75], [-104.97, 36.53], [-104.75, 36.0], [-104.85, 35.75], [-104.82, 35.68], [-104.75, 35.65], [-104.5, 35.75], [-103.97, 35.53], [-103.82, 35.18], [-103.47, 35.03], [-103.32, 34.68], [-103.25, 34.65], [-103.0, 34.75], [-102.47, 34.53], [-102.25, 34.0], [-102.47, 33.47], [-103.0, 33.25], [-103.25, 33.35], [-103.32, 33.32], [-103.47, 32.97], [-103.82, 32.82], [-103.97, 32.47], [-104.5, 32.25], [-105.0, 32.46], [-105.5, 32.25], [-106.03, 32.47], [-106.25, 33.0], [-106.15, 33.25], [-106.25, 33.5], [-106.15, 33.75], [-106.25, 34.0], [-106.15, 34.25], [-106.18, 34.32], [-106.25, 34.35], [-106.5, 34.25], [-106.75, 34.35], [-106.82, 34.32], [-106.85, 34.25], [-106.75, 34.0], [-106.97, 33.47], [-107.5, 33.25], [-108.03, 33.47], [-108.18, 33.82], [-108.53, 33.97], [-108.75, 34.5], [-108.65, 34.75], [-108.75, 35.0], [-108.65, 35.25], [-108.68, 35.32], [-109.03, 35.47], [-109.25, 36.0], [-109.15, 36.25], [-109.25, 36.5], [-109.03, 37.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.648485293612339}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.777098651548396}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.005489551114465, 12.698037773460499, 11.911247369364332, 12.852962594675546]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.005489551114465, 6.021048241637061, 4.30044245638976, 5.15620809459233]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8995067771774643, -5.441439108833981, -6.36379415839964, -5.568735230010909]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.8995067771774643, -6.737372751859311, -8.648485293612339, -6.629133668469933]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2283725554512943, -1.503209123439744, -1.8292857375002307, -1.6316372113723938]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2283725554512943, -1.874286203965909, -2.3865051088922424, -2.0807298022744516]}}