{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:38.153218", "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": "2010-Sep-18_to_2010-Sep-22_349.5_18.5"}, "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": 2010090000823}, "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": "September 18 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 180228.604074623}, "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": ["Mali", "Mauritania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 18.5}, "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": 349.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "349.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 348.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 353.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.75}, "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": {"2010-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.0, 16.75], [-10.75, 16.65], [-10.5, 16.75], [-10.25, 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16.5], [-12.15, 16.75]]]]}, "2010-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.97, 17.53], [-6.75, 17.0], [-6.97, 16.47], [-7.5, 16.25], [-8.03, 16.47], [-8.25, 17.0], [-8.03, 17.53], [-7.5, 17.75], [-6.97, 17.53]]], [[[-11.53, 17.53], [-11.18, 17.68], [-11.04, 18.0], [-11.25, 18.5], [-11.03, 19.03], [-10.5, 19.25], [-10.0, 19.04], [-9.5, 19.25], [-8.97, 19.03], [-8.75, 18.5], [-8.85, 18.25], [-8.82, 18.18], [-8.47, 18.03], [-8.25, 17.5], [-8.35, 17.25], [-8.25, 17.0], [-8.35, 16.75], [-8.25, 16.5], [-8.47, 15.97], [-9.0, 15.75], [-9.25, 15.85], [-9.32, 15.82], [-9.47, 15.47], [-10.0, 15.25], [-10.5, 15.46], [-11.0, 15.25], [-11.25, 15.35], [-11.5, 15.25], [-12.03, 15.47], [-12.25, 16.0], [-12.03, 16.53], [-11.68, 16.68], [-11.65, 16.75], [-11.75, 17.0], [-11.53, 17.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.646753224702195}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.51052588353221}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.03258287256449, 27.4178917312762, 28.40167496331344, 28.96533748346593, 29.455251254153268]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.23260161528333, 26.181499127701557, 26.833469231209904, 27.221029237184325, 28.192842645094913]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.535818174844521, -4.4309530253428955, -3.4652349599295955, -3.088598117852526, -2.7879705494332456]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0192548852547247, -5.646753224702195, -4.702509047485705, -3.9985555620561968, -3.4144460745332594]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5819986344698114, -2.6385179599928086, -2.040760425486101, -1.7366485606445354, -1.5486953523916456]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9100359117266024, -3.318799784665175, -3.075031275898372, -2.404575001661076, -1.7863017767002993]}}