{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:42.744410", "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-Feb-16_to_2014-Feb-18_40.5_-2.0"}, "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": 2014020000706}, "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": "February 16 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 18 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": 58692.586728580434}, "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": ["Kenya", "Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa"]}, "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": ["Indian Ocean"]}, "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": -2.0}, "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": 40.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 42.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, -1.97], [39.82, -1.82], [39.85, -1.75], [39.75, -1.5], [39.85, -1.25], [39.75, -1.0], [39.97, -0.47], [40.5, -0.25], [41.0, -0.46], [41.32, -0.32], [41.47, 0.03], [42.0, 0.25], [42.25, 0.15], [42.5, 0.25], [43.03, 0.03], [43.25, -0.5], [43.03, -1.03], [42.68, -1.18], [42.53, -1.53], [42.18, -1.68], [42.15, -1.75], [42.18, -1.82], [42.53, -1.97], [42.75, -2.5], [42.53, -3.03], [42.18, -3.18], [42.03, -3.53], [41.5, -3.75], [41.25, -3.65], [41.0, -3.75], [40.5, -3.54], [40.0, -3.75], [39.47, -3.53], [39.25, -3.0], [39.35, -2.75], [39.25, -2.5], [39.47, -1.97]]]]}, "2014-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, -1.97], [39.82, -1.82], [39.85, -1.75], [39.75, -1.5], [39.85, -1.25], [39.75, -1.0], [39.97, -0.47], [40.5, -0.25], [41.0, -0.46], [41.32, -0.32], [41.47, 0.03], [42.0, 0.25], [42.25, 0.15], [42.5, 0.25], [43.03, 0.03], [43.25, -0.5], [43.03, -1.03], [42.68, -1.18], [42.53, -1.53], [42.18, -1.68], [42.15, -1.75], [42.18, -1.82], [42.53, -1.97], [42.75, -2.5], [42.53, -3.03], [42.18, -3.18], [42.03, -3.53], [41.5, -3.75], [41.25, -3.65], [41.0, -3.75], [40.5, -3.54], [40.0, -3.75], [39.47, -3.53], [39.25, -3.0], [39.35, -2.75], [39.25, -2.5], [39.47, -1.97]]]]}, "2014-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, -1.97], [39.82, -1.82], [39.85, -1.75], [39.75, -1.5], [39.85, -1.25], [39.75, -1.0], [39.97, -0.47], [40.5, -0.25], [41.0, -0.46], [41.32, -0.32], [41.47, 0.03], [42.0, 0.25], [42.25, 0.15], [42.5, 0.25], [43.03, 0.03], [43.25, -0.5], [43.03, -1.03], [42.68, -1.18], [42.53, -1.53], [42.18, -1.68], [42.15, -1.75], [42.18, -1.82], [42.53, -1.97], [42.75, -2.5], [42.53, -3.03], [42.18, -3.18], [42.03, -3.53], [41.5, -3.75], [41.25, -3.65], [41.0, -3.75], [40.5, -3.54], [40.0, -3.75], [39.47, -3.53], [39.25, -3.0], [39.35, -2.75], [39.25, -2.5], [39.47, -1.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.5837644923567495}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9018511681346026}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.816911404293478, 26.634482591005508, 27.01275462766921]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.63664032393848, 25.60798829021593, 25.68455251334632]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8843015559690667, -1.0909023678774803, -0.730349580557261]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.139705005829569, -1.5837644923567495, -0.939255954521343]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6694768780392868, -2.067841383326166, -1.3357741561997905]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2678748293831577, -3.005407719612077, -1.8169419381029734]}}