{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:57.061574", "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": "2011-Mar-15_to_2011-Mar-17_34.5_3.5"}, "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": 2011030000856}, "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 15 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 17 2011"}, "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": 76996.30940973302}, "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": ["Ethiopia", "Kenya", "South Sudan", "Uganda"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": 3.5}, "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": 34.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.25}, "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": 6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.25, 4.0], [32.47, 4.53], [33.0, 4.75], [33.25, 4.65], [33.32, 4.68], [33.35, 4.75], [33.32, 4.82], [32.97, 4.97], [32.75, 5.5], [32.96, 6.0], [32.75, 6.5], [32.97, 7.03], [33.5, 7.25], [34.03, 7.03], [34.18, 6.68], [34.25, 6.65], [34.5, 6.75], [34.75, 6.65], [35.0, 6.75], [35.53, 6.53], [35.68, 6.18], [35.75, 6.15], [36.0, 6.25], [36.53, 6.03], [36.75, 5.5], [36.53, 4.97], [36.0, 4.75], [35.75, 4.85], [35.68, 4.82], [35.65, 4.75], [35.75, 4.5], [35.65, 4.25], [35.75, 4.0], [35.65, 3.75], [35.75, 3.5], [35.53, 2.97], [35.0, 2.75], [34.75, 2.85], [34.5, 2.75], [34.25, 2.85], [34.0, 2.75], [33.75, 2.85], [33.5, 2.75], [32.97, 2.97], [32.82, 3.32], [32.47, 3.47], [32.25, 4.0]]]]}, "2011-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.25, 4.0], [32.47, 4.53], [33.0, 4.75], [33.25, 4.65], [33.32, 4.68], [33.35, 4.75], [33.32, 4.82], [32.97, 4.97], [32.75, 5.5], [32.96, 6.0], [32.75, 6.5], [32.97, 7.03], [33.5, 7.25], [34.03, 7.03], [34.18, 6.68], [34.25, 6.65], [34.5, 6.75], [34.75, 6.65], [35.0, 6.75], [35.53, 6.53], [35.68, 6.18], [35.75, 6.15], [36.0, 6.25], [36.53, 6.03], [36.75, 5.5], [36.53, 4.97], [36.0, 4.75], [35.75, 4.85], [35.68, 4.82], [35.65, 4.75], [35.75, 4.5], [35.65, 4.25], [35.75, 4.0], [35.65, 3.75], [35.75, 3.5], [35.53, 2.97], [35.0, 2.75], [34.75, 2.85], [34.5, 2.75], [34.25, 2.85], [34.0, 2.75], [33.75, 2.85], [33.5, 2.75], [32.97, 2.97], [32.82, 3.32], [32.47, 3.47], [32.25, 4.0]]]]}, "2011-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.25, 4.0], [32.47, 4.53], [33.0, 4.75], [33.25, 4.65], [33.32, 4.68], [33.35, 4.75], [33.32, 4.82], [32.97, 4.97], [32.75, 5.5], [32.96, 6.0], [32.75, 6.5], [32.97, 7.03], [33.5, 7.25], [34.03, 7.03], [34.18, 6.68], [34.25, 6.65], [34.5, 6.75], [34.75, 6.65], [35.0, 6.75], [35.53, 6.53], [35.68, 6.18], [35.75, 6.15], [36.0, 6.25], [36.53, 6.03], [36.75, 5.5], [36.53, 4.97], [36.0, 4.75], [35.75, 4.85], [35.68, 4.82], [35.65, 4.75], [35.75, 4.5], [35.65, 4.25], [35.75, 4.0], [35.65, 3.75], [35.75, 3.5], [35.53, 2.97], [35.0, 2.75], [34.75, 2.85], [34.5, 2.75], [34.25, 2.85], [34.0, 2.75], [33.75, 2.85], [33.5, 2.75], [32.97, 2.97], [32.82, 3.32], [32.47, 3.47], [32.25, 4.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.230634142211841}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.8342907729147075}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.45063887778872, 25.763158469614723, 25.475459053612724]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.164694340556196, 19.957066242586222, 19.23278385706601]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.029896785930394, -3.6275125022531394, -3.8454630305605906]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.230634142211841, -4.378840636751477, -5.200649853036566]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2801479149882833, -2.002798815633378, -2.0937752175061317]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7696178951885706, -2.702183052058519, -3.4241679305228327]}}