{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:54.858143", "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": "2018-Jan-30_to_2018-Feb-01_269.5_17.5"}, "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": 2018010001046}, "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 30 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 01 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 82330.94737182948}, "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": ["Guatemala", "Mexico"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Central-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": ["Gulf of Mexico"]}, "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": 17.5}, "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": 269.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "269.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 266.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 270.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.53, 17.97], [-93.75, 18.5], [-93.53, 19.03], [-93.0, 19.25], [-92.75, 19.15], [-92.5, 19.25], [-92.25, 19.15], [-92.0, 19.25], [-91.75, 19.15], [-91.68, 19.18], [-91.53, 19.53], [-91.18, 19.68], [-91.03, 20.03], [-90.5, 20.25], [-90.25, 20.15], [-90.0, 20.25], [-89.47, 20.03], [-89.25, 19.5], [-89.35, 19.25], [-89.25, 19.0], [-89.35, 18.75], [-89.25, 18.5], [-89.35, 18.25], [-89.32, 18.18], [-88.97, 18.03], [-88.75, 17.5], [-88.85, 17.25], [-88.75, 17.0], [-88.97, 16.47], [-89.5, 16.25], [-89.75, 16.35], [-89.82, 16.32], [-89.97, 15.97], [-90.5, 15.75], [-90.75, 15.85], [-91.0, 15.75], [-91.53, 15.97], [-91.75, 16.5], [-91.65, 16.75], [-91.68, 16.82], [-91.75, 16.85], [-92.0, 16.75], [-92.53, 16.97], [-92.75, 17.5], [-92.65, 17.75], [-92.68, 17.82], [-92.75, 17.85], [-93.0, 17.75], [-93.53, 17.97]]]]}, "2018-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.53, 17.97], [-93.75, 18.5], [-93.53, 19.03], [-93.0, 19.25], [-92.75, 19.15], [-92.5, 19.25], [-92.25, 19.15], [-92.0, 19.25], [-91.75, 19.15], [-91.68, 19.18], [-91.53, 19.53], [-91.18, 19.68], [-91.03, 20.03], [-90.5, 20.25], [-90.25, 20.15], [-90.0, 20.25], [-89.47, 20.03], [-89.25, 19.5], [-89.35, 19.25], [-89.25, 19.0], [-89.35, 18.75], [-89.25, 18.5], [-89.35, 18.25], [-89.32, 18.18], [-88.97, 18.03], [-88.75, 17.5], [-88.85, 17.25], [-88.75, 17.0], [-88.97, 16.47], [-89.5, 16.25], [-89.75, 16.35], [-89.82, 16.32], [-89.97, 15.97], [-90.5, 15.75], [-90.75, 15.85], [-91.0, 15.75], [-91.53, 15.97], [-91.75, 16.5], [-91.65, 16.75], [-91.68, 16.82], [-91.75, 16.85], [-92.0, 16.75], [-92.53, 16.97], [-92.75, 17.5], [-92.65, 17.75], [-92.68, 17.82], [-92.75, 17.85], [-93.0, 17.75], [-93.53, 17.97]]]]}, "2018-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.53, 17.97], [-93.75, 18.5], [-93.53, 19.03], [-93.0, 19.25], [-92.75, 19.15], [-92.5, 19.25], [-92.25, 19.15], [-92.0, 19.25], [-91.75, 19.15], [-91.68, 19.18], [-91.53, 19.53], [-91.18, 19.68], [-91.03, 20.03], [-90.5, 20.25], [-90.25, 20.15], [-90.0, 20.25], [-89.47, 20.03], [-89.25, 19.5], [-89.35, 19.25], [-89.25, 19.0], [-89.35, 18.75], [-89.25, 18.5], [-89.35, 18.25], [-89.32, 18.18], [-88.97, 18.03], [-88.75, 17.5], [-88.85, 17.25], [-88.75, 17.0], [-88.97, 16.47], [-89.5, 16.25], [-89.75, 16.35], [-89.82, 16.32], [-89.97, 15.97], [-90.5, 15.75], [-90.75, 15.85], [-91.0, 15.75], [-91.53, 15.97], [-91.75, 16.5], [-91.65, 16.75], [-91.68, 16.82], [-91.75, 16.85], [-92.0, 16.75], [-92.53, 16.97], [-92.75, 17.5], [-92.65, 17.75], [-92.68, 17.82], [-92.75, 17.85], [-93.0, 17.75], [-93.53, 17.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.702028015677342}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.264024423726152}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.030377355916812, 20.42412415485171, 21.287456431647513]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.448419727239013, 18.288132891143903, 19.720287359391136]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.015034240796465, -3.764029889921336, -3.0130091404606554]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.942476861599573, -4.702028015677342, -4.096334618801677]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.795642006972797, -2.2785522622148724, -1.8731664508940866]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.098236200967596, -2.978393005322149, -2.515485572913295]}}