{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:37.206993", "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": "2012-Feb-17_to_2012-Feb-21_42.5_1.5"}, "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": 2012020000999}, "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 17 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 21 2012"}, "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": 89585.47815144254}, "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": ["N.Eastern-Africa", "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": []}, "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": 1.5}, "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": 42.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.5, 2.25], [43.03, 2.03], [43.25, 1.5], [43.03, 0.97], [42.5, 0.75], [41.97, 0.97], [41.75, 1.5], [41.97, 2.03], [42.5, 2.25]]]]}, "2012-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 2.53], [40.32, 2.68], [40.47, 3.03], [41.0, 3.25], [41.25, 3.15], [41.5, 3.25], [42.03, 3.03], [42.18, 2.68], [42.53, 2.53], [42.68, 2.18], [43.03, 2.03], [43.25, 1.5], [43.15, 1.25], [43.25, 1.0], [43.03, 0.47], [42.5, 0.25], [42.25, 0.35], [42.0, 0.25], [41.75, 0.35], [41.5, 0.25], [40.97, 0.47], [40.82, 0.82], [40.75, 0.85], [40.5, 0.75], [39.97, 0.97], [39.75, 1.5], [39.85, 1.75], [39.75, 2.0], [39.97, 2.53]]]]}, "2012-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 2.53], [40.32, 2.68], [40.47, 3.03], [40.82, 3.18], [40.97, 3.53], [41.32, 3.68], [41.47, 4.03], [42.0, 4.25], [42.53, 4.03], [42.68, 3.68], [43.03, 3.53], [43.25, 3.0], [43.15, 2.75], [43.18, 2.68], [43.25, 2.65], [43.5, 2.75], [43.75, 2.65], [44.0, 2.75], [44.53, 2.53], [44.75, 2.0], [44.65, 1.75], [44.75, 1.5], [44.53, 0.97], [44.0, 0.75], [43.75, 0.85], [43.68, 0.82], [43.53, 0.47], [43.18, 0.32], [43.03, -0.03], [42.5, -0.25], [41.97, -0.03], [41.82, 0.32], [41.75, 0.35], [41.5, 0.25], [40.97, 0.47], [40.82, 0.82], [40.75, 0.85], [40.5, 0.75], [39.97, 0.97], [39.75, 1.5], [39.85, 1.75], [39.75, 2.0], [39.97, 2.53]]]]}, "2012-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 2.53], [40.32, 2.68], [40.47, 3.03], [40.82, 3.18], [40.97, 3.53], [41.32, 3.68], [41.47, 4.03], [42.0, 4.25], [42.53, 4.03], [42.68, 3.68], [43.03, 3.53], [43.25, 3.0], [43.15, 2.75], [43.18, 2.68], [43.25, 2.65], [43.5, 2.75], [43.75, 2.65], [44.0, 2.75], [44.53, 2.53], [44.75, 2.0], [44.65, 1.75], [44.75, 1.5], [44.53, 0.97], [44.0, 0.75], [43.75, 0.85], [43.68, 0.82], [43.53, 0.47], [43.18, 0.32], [43.03, -0.03], [42.5, -0.25], [41.97, -0.03], [41.82, 0.32], [41.75, 0.35], [41.5, 0.25], [40.97, 0.47], [40.82, 0.82], [40.75, 0.85], [40.5, 0.75], [39.97, 0.97], [39.75, 1.5], [39.85, 1.75], [39.75, 2.0], [39.97, 2.53]]]]}, "2012-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, 2.0], [39.97, 2.53], [40.32, 2.68], [40.47, 3.03], [40.82, 3.18], [40.97, 3.53], [41.32, 3.68], [41.47, 4.03], [42.0, 4.25], [42.53, 4.03], [42.68, 3.68], [43.03, 3.53], [43.25, 3.0], [43.15, 2.75], [43.18, 2.68], [43.25, 2.65], [43.5, 2.75], [43.75, 2.65], [44.0, 2.75], [44.53, 2.53], [44.75, 2.0], [44.65, 1.75], [44.75, 1.5], [44.53, 0.97], [44.0, 0.75], [43.75, 0.85], [43.68, 0.82], [43.53, 0.47], [43.18, 0.32], [43.03, -0.03], [42.5, -0.25], [41.97, -0.03], [41.82, 0.32], [41.75, 0.35], [41.5, 0.25], [40.97, 0.47], [40.82, 0.82], [40.47, 0.97], [40.32, 1.32], [39.97, 1.47], [39.75, 2.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.6969780150210454}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1153303340375356}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.511487155797624, 29.234222009900122, 28.918893091639518, 28.99660643767021, 29.094011501402917]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.511487155797624, 28.809707963409608, 27.195247087244866, 27.260433932850447, 27.360650477306706]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9135068359443039, -1.264458574794921, -1.152946631482817, -1.1070181910568757, -1.017623464323815]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9135068359443039, -1.6969780150210454, -1.6015976265497898, -1.393389772265948, -1.2427687284804847]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.450952992872006, -1.7265109528693512, -1.7264308411106861, -1.6386779353685783, -1.479210457091808]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.450952992872006, -2.3250972940937076, -2.666525944546252, -2.190704885781182, -1.8676917007475737]}}