{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:19.336489", "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": "2017-Nov-01_to_2017-Nov-05_37.5_-4.0"}, "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": 2017110000061}, "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": "November 01 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 05 2017"}, "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": 83288.38633093657}, "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", "Tanzania"]}, "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": -4.0}, "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": 37.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.5, -3.25], [38.03, -3.47], [38.25, -4.0], [38.15, -4.25], [38.25, -4.5], [38.03, -5.03], [37.5, -5.25], [36.97, -5.03], [36.75, -4.5], [36.85, -4.25], [36.75, -4.0], [36.97, -3.47], [37.5, -3.25]]], [[[38.47, -2.97], [38.82, -2.82], [38.97, -2.47], [39.5, -2.25], [39.75, -2.35], [39.82, -2.32], [39.97, -1.97], [40.5, -1.75], [41.03, -1.97], [41.25, -2.5], [41.03, -3.03], [40.68, -3.18], [40.65, -3.25], [40.75, -3.5], [40.65, -3.75], [40.75, -4.0], [40.53, -4.53], [40.0, -4.75], [39.75, -4.65], [39.5, -4.75], [39.25, -4.65], [39.0, -4.75], [38.47, -4.53], [38.25, -4.0], [38.35, -3.75], [38.25, -3.5], [38.47, -2.97]]]]}, "2017-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, -2.97], [36.5, -2.75], [36.75, -2.85], [36.82, -2.82], [36.97, -2.47], [37.5, -2.25], [37.75, -2.35], [38.0, -2.25], [38.25, -2.35], [38.5, -2.25], [38.75, -2.35], [38.82, -2.32], [38.97, -1.97], [39.5, -1.75], [40.0, -1.96], [40.5, -1.75], [41.03, -1.97], [41.25, -2.5], [41.03, -3.03], [40.68, -3.18], [40.65, -3.25], [40.75, -3.5], [40.65, -3.75], [40.75, -4.0], [40.53, -4.53], [40.0, -4.75], [39.75, -4.65], [39.5, -4.75], [39.25, -4.65], [39.0, -4.75], [38.75, -4.65], [38.63, -4.7], [38.75, -5.0], [38.53, -5.53], [38.0, -5.75], [37.75, -5.65], [37.5, -5.75], [36.97, -5.53], [36.75, -5.0], [36.85, -4.75], [36.82, -4.68], [36.75, -4.65], [36.5, -4.75], [35.97, -4.53], [35.75, -4.0], [35.85, -3.75], [35.75, -3.5], [35.97, -2.97]]]]}, "2017-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, -2.97], [36.5, -2.75], [36.75, -2.85], [36.82, -2.82], [36.97, -2.47], [37.5, -2.25], [37.75, -2.35], [38.0, -2.25], [38.25, -2.35], [38.5, -2.25], [38.75, -2.35], [38.82, -2.32], [38.97, -1.97], [39.5, -1.75], [40.0, -1.96], [40.5, -1.75], [41.03, -1.97], [41.25, -2.5], [41.03, -3.03], [40.68, -3.18], [40.65, -3.25], [40.75, -3.5], [40.65, -3.75], [40.75, -4.0], [40.53, -4.53], [40.0, -4.75], [39.75, -4.65], [39.5, -4.75], [39.25, -4.65], [39.0, -4.75], [38.75, -4.65], [38.63, -4.7], [38.75, -5.0], [38.53, -5.53], [38.0, -5.75], [37.75, -5.65], [37.5, -5.75], [36.97, -5.53], [36.75, -5.0], [36.85, -4.75], [36.82, -4.68], [36.75, -4.65], [36.5, -4.75], [35.97, -4.53], [35.75, -4.0], [35.85, -3.75], [35.75, -3.5], [35.97, -2.97]]]]}, "2017-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, -2.97], [36.5, -2.75], [36.75, -2.85], [36.82, -2.82], [36.97, -2.47], [37.5, -2.25], [37.75, -2.35], [38.0, -2.25], [38.25, -2.35], [38.5, -2.25], [38.75, -2.35], [38.82, -2.32], [38.97, -1.97], [39.5, -1.75], [40.03, -1.97], [40.18, -2.32], [40.53, -2.47], [40.75, -3.0], [40.54, -3.5], [40.75, -4.0], [40.53, -4.53], [40.0, -4.75], [39.75, -4.65], [39.5, -4.75], [39.25, -4.65], [39.0, -4.75], [38.75, -4.65], [38.63, -4.7], [38.75, -5.0], [38.53, -5.53], [38.0, -5.75], [37.75, -5.65], [37.5, -5.75], [36.97, -5.53], [36.75, -5.0], [36.85, -4.75], [36.82, -4.68], [36.75, -4.65], [36.5, -4.75], [35.97, -4.53], [35.75, -4.0], [35.85, -3.75], [35.75, -3.5], [35.97, -2.97]]]]}, "2017-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, -2.97], [36.5, -2.75], [36.75, -2.85], [37.0, -2.75], [37.25, -2.85], [37.5, -2.75], [37.75, -2.85], [38.0, -2.75], [38.5, -2.96], [39.0, -2.75], [39.53, -2.97], [39.7, -3.38], [40.0, -3.25], [40.53, -3.47], [40.75, -4.0], [40.53, -4.53], [40.0, -4.75], [39.47, -4.53], [39.3, -4.12], [39.18, -4.18], [39.03, -4.53], [38.63, -4.7], [38.75, -5.0], [38.53, -5.53], [38.0, -5.75], [37.75, -5.65], [37.5, -5.75], [36.97, -5.53], [36.75, -5.0], [36.85, -4.75], [36.82, -4.68], [36.75, -4.65], [36.5, -4.75], [35.97, -4.53], [35.75, -4.0], [35.85, -3.75], [35.75, -3.5], [35.97, -2.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.92059187751056}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7963718605778047}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.32749214306375, 22.450286165503314, 22.816167382421156, 22.196716083624494, 22.00404600433626]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.59882626559346, 15.191257517584972, 15.371500653934788, 15.476019573246106, 19.57682717234792]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3045799082294345, -1.9580338277489793, -1.6061244953782408, -2.0827740289988785, -1.7264763614400718]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8272806026475337, -2.92059187751056, -2.598983110673828, -2.8966059223050706, -2.384884077417553]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6621870114455755, -2.0652078351654883, -1.6793482677021292, -2.1535895997135097, -1.6906167926419775]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1805917645190065, -2.45533537793, -2.1918520023272117, -2.771680385342837, -2.149567009754615]}}