{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:04.707648", "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-Apr-15_to_2014-Apr-18_261.0_23.5"}, "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": 2014040000601}, "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": "April 15 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 18 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": 96157.22741551066}, "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": ["Mexico"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": []}, "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": 23.5}, "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": 261.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "261.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 259.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.25, 26.0], [-101.03, 26.53], [-100.5, 26.75], [-99.97, 26.53], [-99.82, 26.18], [-99.7, 26.12], [-99.53, 26.53], [-99.0, 26.75], [-98.47, 26.53], [-98.32, 26.18], [-98.0, 26.04], [-97.5, 26.25], [-96.97, 26.03], [-96.75, 25.5], [-96.97, 24.97], [-97.32, 24.82], [-97.35, 24.75], [-97.25, 24.5], [-97.35, 24.25], [-97.25, 24.0], [-97.35, 23.75], [-97.25, 23.5], [-97.35, 23.25], [-97.25, 23.0], [-97.35, 22.75], [-97.25, 22.5], [-97.35, 22.25], [-97.25, 22.0], [-97.46, 21.5], [-97.25, 21.0], [-97.47, 20.47], [-98.0, 20.25], [-98.53, 20.47], [-98.68, 20.82], [-98.75, 20.85], [-99.0, 20.75], [-99.53, 20.97], [-99.75, 21.5], [-99.65, 21.75], [-99.75, 22.0], [-99.65, 22.25], [-99.68, 22.32], [-100.03, 22.47], [-100.25, 23.0], [-100.04, 23.5], [-100.25, 24.0], [-100.15, 24.25], [-100.25, 24.5], [-100.15, 24.75], [-100.18, 24.82], [-100.53, 24.97], [-100.68, 25.32], [-101.03, 25.47], [-101.25, 26.0]]]]}, "2014-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.25, 26.0], [-101.03, 26.53], [-100.5, 26.75], [-99.97, 26.53], [-99.82, 26.18], [-99.7, 26.12], [-99.53, 26.53], [-99.0, 26.75], [-98.47, 26.53], [-98.32, 26.18], [-98.0, 26.04], [-97.5, 26.25], [-96.97, 26.03], [-96.75, 25.5], [-96.97, 24.97], [-97.32, 24.82], [-97.35, 24.75], [-97.25, 24.5], [-97.35, 24.25], [-97.25, 24.0], [-97.35, 23.75], [-97.25, 23.5], [-97.35, 23.25], [-97.25, 23.0], [-97.35, 22.75], [-97.25, 22.5], [-97.35, 22.25], [-97.25, 22.0], [-97.46, 21.5], [-97.25, 21.0], [-97.47, 20.47], [-98.0, 20.25], [-98.53, 20.47], [-98.68, 20.82], [-98.75, 20.85], [-99.0, 20.75], [-99.53, 20.97], [-99.75, 21.5], [-99.65, 21.75], [-99.75, 22.0], [-99.65, 22.25], [-99.68, 22.32], [-100.03, 22.47], [-100.25, 23.0], [-100.04, 23.5], [-100.25, 24.0], [-100.15, 24.25], [-100.25, 24.5], [-100.15, 24.75], [-100.18, 24.82], [-100.53, 24.97], [-100.68, 25.32], [-101.03, 25.47], [-101.25, 26.0]]]]}, "2014-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.25, 26.0], [-101.03, 26.53], [-100.5, 26.75], [-99.97, 26.53], [-99.82, 26.18], [-99.7, 26.12], [-99.53, 26.53], [-99.0, 26.75], [-98.47, 26.53], [-98.32, 26.18], [-98.0, 26.04], [-97.5, 26.25], [-96.97, 26.03], [-96.75, 25.5], [-96.97, 24.97], [-97.32, 24.82], [-97.35, 24.75], [-97.25, 24.5], [-97.35, 24.25], [-97.25, 24.0], [-97.35, 23.75], [-97.25, 23.5], [-97.35, 23.25], [-97.25, 23.0], [-97.35, 22.75], [-97.25, 22.5], [-97.35, 22.25], [-97.25, 22.0], [-97.46, 21.5], [-97.25, 21.0], [-97.47, 20.47], [-98.0, 20.25], [-98.53, 20.47], [-98.68, 20.82], [-98.75, 20.85], [-99.0, 20.75], [-99.53, 20.97], [-99.75, 21.5], [-99.65, 21.75], [-99.75, 22.0], [-99.65, 22.25], [-99.68, 22.32], [-100.03, 22.47], [-100.25, 23.0], [-100.04, 23.5], [-100.25, 24.0], [-100.15, 24.25], [-100.25, 24.5], [-100.15, 24.75], [-100.18, 24.82], [-100.53, 24.97], [-100.68, 25.32], [-101.03, 25.47], [-101.25, 26.0]]]]}, "2014-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.0, 24.25], [-98.47, 24.03], [-98.25, 23.5], [-98.47, 22.97], [-99.0, 22.75], [-99.53, 22.97], [-99.75, 23.5], [-99.53, 24.03], [-99.0, 24.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.084540719007009}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.911579427056694}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.215141802675817, 16.727003954639827, 20.276279129054103, 21.34089137829659]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.987517612791294, 11.50331796272377, 14.248308449454555, 21.34089137829659]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.10130939760753, -7.61112886008262, -4.092957637352138, -3.509220555401498]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.99576882342501, -9.084540719007009, -5.171645431519494, -3.509220555401498]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0873369395427375, -2.610915433544182, -1.4401105690023608, -1.2647683936149303]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.2338359298060957, -3.0703820000890474, -1.7350439913170408, -1.2647683936149303]}}