{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:56.075083", "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-Mar-28_to_2014-Mar-30_352.5_29.5"}, "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": 2014030001088}, "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": "March 28 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 30 2014"}, "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": 118023.62049186358}, "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": ["Algeria", "Mauritania", "Morocco"]}, "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": 29.5}, "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": 352.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "352.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 348.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 354.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.03, 25.53], [-10.68, 25.68], [-10.53, 26.03], [-10.0, 26.25], [-9.75, 26.15], [-9.62, 26.2], [-9.75, 26.5], [-9.53, 27.03], [-9.0, 27.25], [-8.7, 27.12], [-8.65, 27.25], [-8.75, 27.5], [-8.65, 27.75], [-8.75, 28.0], [-8.65, 28.25], [-8.68, 28.32], [-9.03, 28.47], [-9.25, 29.0], [-9.03, 29.53], [-8.68, 29.68], [-8.53, 30.03], [-8.0, 30.25], [-7.75, 30.15], [-7.68, 30.18], [-7.53, 30.53], [-7.0, 30.75], [-6.75, 30.65], [-6.5, 30.75], [-6.25, 30.65], [-6.0, 30.75], [-5.47, 30.53], [-5.25, 30.0], [-5.46, 29.5], [-5.25, 29.0], [-5.35, 28.75], [-5.25, 28.5], [-5.47, 27.97], [-6.0, 27.75], [-6.25, 27.85], [-6.32, 27.82], [-6.35, 27.75], [-6.25, 27.5], [-6.47, 26.97], [-6.82, 26.82], [-6.85, 26.75], [-6.75, 26.5], [-6.85, 26.25], [-6.75, 26.0], [-6.97, 25.47], [-7.5, 25.25], [-7.75, 25.35], [-7.82, 25.32], [-7.97, 24.97], [-8.32, 24.82], [-8.47, 24.47], [-8.82, 24.32], [-8.97, 23.97], [-9.5, 23.75], [-9.75, 23.85], [-9.82, 23.82], [-9.97, 23.47], [-10.5, 23.25], [-10.75, 23.35], [-11.0, 23.25], [-11.53, 23.47], [-11.75, 24.0], [-11.53, 24.53], [-11.12, 24.7], [-11.25, 25.0], [-11.03, 25.53]]]]}, "2014-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.03, 25.53], [-10.68, 25.68], [-10.53, 26.03], [-10.0, 26.25], [-9.75, 26.15], [-9.62, 26.2], [-9.75, 26.5], [-9.53, 27.03], [-9.0, 27.25], [-8.7, 27.12], [-8.65, 27.25], [-8.75, 27.5], [-8.65, 27.75], [-8.75, 28.0], [-8.65, 28.25], [-8.68, 28.32], [-9.03, 28.47], [-9.25, 29.0], [-9.03, 29.53], [-8.68, 29.68], [-8.53, 30.03], [-8.0, 30.25], [-7.75, 30.15], [-7.68, 30.18], [-7.53, 30.53], [-7.0, 30.75], [-6.75, 30.65], [-6.5, 30.75], [-6.25, 30.65], [-6.0, 30.75], [-5.47, 30.53], [-5.25, 30.0], [-5.46, 29.5], [-5.25, 29.0], [-5.35, 28.75], [-5.25, 28.5], [-5.47, 27.97], [-6.0, 27.75], [-6.25, 27.85], [-6.32, 27.82], [-6.35, 27.75], [-6.25, 27.5], [-6.47, 26.97], [-6.82, 26.82], [-6.85, 26.75], [-6.75, 26.5], [-6.85, 26.25], [-6.75, 26.0], [-6.97, 25.47], [-7.5, 25.25], [-7.75, 25.35], [-7.82, 25.32], [-7.97, 24.97], [-8.32, 24.82], [-8.47, 24.47], [-8.82, 24.32], [-8.97, 23.97], [-9.5, 23.75], [-9.75, 23.85], [-9.82, 23.82], [-9.97, 23.47], [-10.5, 23.25], [-10.75, 23.35], [-11.0, 23.25], [-11.53, 23.47], [-11.75, 24.0], [-11.53, 24.53], [-11.12, 24.7], [-11.25, 25.0], [-11.03, 25.53]]]]}, "2014-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.03, 25.53], [-10.68, 25.68], [-10.53, 26.03], [-10.0, 26.25], [-9.75, 26.15], [-9.62, 26.2], [-9.75, 26.5], [-9.53, 27.03], [-9.0, 27.25], [-8.7, 27.12], [-8.65, 27.25], [-8.75, 27.5], [-8.65, 27.75], [-8.75, 28.0], [-8.65, 28.25], [-8.68, 28.32], [-9.03, 28.47], [-9.25, 29.0], [-9.03, 29.53], [-8.68, 29.68], [-8.53, 30.03], [-8.0, 30.25], [-7.75, 30.15], [-7.68, 30.18], [-7.53, 30.53], [-7.0, 30.75], [-6.75, 30.65], [-6.5, 30.75], [-6.25, 30.65], [-6.0, 30.75], [-5.47, 30.53], [-5.25, 30.0], [-5.46, 29.5], [-5.25, 29.0], [-5.35, 28.75], [-5.25, 28.5], [-5.47, 27.97], [-6.0, 27.75], [-6.25, 27.85], [-6.32, 27.82], [-6.35, 27.75], [-6.25, 27.5], [-6.47, 26.97], [-6.82, 26.82], [-6.85, 26.75], [-6.75, 26.5], [-6.85, 26.25], [-6.75, 26.0], [-6.97, 25.47], [-7.5, 25.25], [-7.75, 25.35], [-7.82, 25.32], [-7.97, 24.97], [-8.32, 24.82], [-8.47, 24.47], [-8.82, 24.32], [-8.97, 23.97], [-9.5, 23.75], [-9.75, 23.85], [-9.82, 23.82], [-9.97, 23.47], [-10.5, 23.25], [-10.75, 23.35], [-11.0, 23.25], [-11.53, 23.47], [-11.75, 24.0], [-11.53, 24.53], [-11.12, 24.7], [-11.25, 25.0], [-11.03, 25.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.0930154309716045}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.516382114285495}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.628756902897635, 15.993785428177318, 17.48428418874255]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.437115735578288, 14.118239001941504, 16.613942879816364]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.4349638853847715, -6.235327194046068, -4.878855263425646]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.604921207739494, -7.0930154309716045, -5.819205139617509]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6402769225354648, -1.9070578563292104, -1.4943445162675566]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9582514361502443, -2.255693717092171, -1.702916677583198]}}