{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:54.748531", "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-Jul-10_to_2011-Jul-12_13.5_6.0"}, "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": 2011070000701}, "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": "July 10 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 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": 101667.16391964763}, "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": ["Cameroon", "Central African Republic", "Gabon"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": 6.0}, "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": 13.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 12.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, 6.03], [12.32, 6.18], [12.47, 6.53], [13.0, 6.75], [13.25, 6.65], [13.5, 6.75], [14.03, 6.53], [14.18, 6.18], [14.25, 6.15], [14.5, 6.25], [14.75, 6.15], [15.0, 6.25], [15.25, 6.15], [15.5, 6.25], [16.03, 6.03], [16.18, 5.68], [16.25, 5.65], [16.5, 5.75], [17.03, 5.53], [17.25, 5.0], [17.03, 4.47], [16.68, 4.32], [16.53, 3.97], [16.0, 3.75], [15.75, 3.85], [15.5, 3.75], [14.97, 3.97], [14.82, 4.32], [14.75, 4.35], [14.68, 4.32], [14.54, 4.0], [14.68, 3.68], [15.03, 3.53], [15.25, 3.0], [15.03, 2.47], [14.5, 2.25], [13.97, 2.47], [13.82, 2.82], [13.75, 2.85], [13.68, 2.82], [13.65, 2.75], [13.75, 2.5], [13.53, 1.97], [13.18, 1.82], [13.03, 1.47], [12.5, 1.25], [11.97, 1.47], [11.75, 2.0], [11.97, 2.53], [12.32, 2.68], [12.35, 2.75], [12.32, 2.82], [11.97, 2.97], [11.75, 3.5], [11.97, 4.03], [12.32, 4.18], [12.35, 4.25], [12.32, 4.32], [11.97, 4.47], [11.75, 5.0], [11.85, 5.25], [11.75, 5.5], [11.97, 6.03]]]]}, "2011-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, 6.03], [12.32, 6.18], [12.47, 6.53], [13.0, 6.75], [13.25, 6.65], [13.5, 6.75], [14.03, 6.53], [14.18, 6.18], [14.25, 6.15], [14.5, 6.25], [14.75, 6.15], [15.0, 6.25], [15.25, 6.15], [15.5, 6.25], [16.03, 6.03], [16.18, 5.68], [16.25, 5.65], [16.5, 5.75], [17.03, 5.53], [17.25, 5.0], [17.03, 4.47], [16.68, 4.32], [16.53, 3.97], [16.0, 3.75], [15.75, 3.85], [15.5, 3.75], [14.97, 3.97], [14.82, 4.32], [14.75, 4.35], [14.68, 4.32], [14.54, 4.0], [14.68, 3.68], [15.03, 3.53], [15.25, 3.0], [15.03, 2.47], [14.5, 2.25], [13.97, 2.47], [13.82, 2.82], [13.75, 2.85], [13.68, 2.82], [13.65, 2.75], [13.75, 2.5], [13.53, 1.97], [13.18, 1.82], [13.03, 1.47], [12.5, 1.25], [11.97, 1.47], [11.75, 2.0], [11.97, 2.53], [12.32, 2.68], [12.35, 2.75], [12.32, 2.82], [11.97, 2.97], [11.75, 3.5], [11.97, 4.03], [12.32, 4.18], [12.35, 4.25], [12.32, 4.32], [11.97, 4.47], [11.75, 5.0], [11.85, 5.25], [11.75, 5.5], [11.97, 6.03]]]]}, "2011-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, 6.03], [12.32, 6.18], [12.47, 6.53], [13.0, 6.75], [13.25, 6.65], [13.5, 6.75], [14.03, 6.53], [14.18, 6.18], [14.25, 6.15], [14.5, 6.25], [14.75, 6.15], [15.0, 6.25], [15.25, 6.15], [15.5, 6.25], [16.03, 6.03], [16.18, 5.68], [16.25, 5.65], [16.5, 5.75], [17.03, 5.53], [17.25, 5.0], [17.03, 4.47], [16.68, 4.32], [16.53, 3.97], [16.0, 3.75], [15.75, 3.85], [15.5, 3.75], [14.97, 3.97], [14.82, 4.32], [14.75, 4.35], [14.68, 4.32], [14.54, 4.0], [14.68, 3.68], [15.03, 3.53], [15.25, 3.0], [15.03, 2.47], [14.5, 2.25], [13.97, 2.47], [13.82, 2.82], [13.75, 2.85], [13.68, 2.82], [13.65, 2.75], [13.75, 2.5], [13.53, 1.97], [13.18, 1.82], [13.03, 1.47], [12.5, 1.25], [11.97, 1.47], [11.75, 2.0], [11.97, 2.53], [12.32, 2.68], [12.35, 2.75], [12.32, 2.82], [11.97, 2.97], [11.75, 3.5], [11.97, 4.03], [12.32, 4.18], [12.35, 4.25], [12.32, 4.32], [11.97, 4.47], [11.75, 5.0], [11.85, 5.25], [11.75, 5.5], [11.97, 6.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7381570884942334}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5503841074966447}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.188285447584917, 21.23756766360276, 21.79447931658416]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.46165843374905, 19.94055875468581, 20.812193470355226]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7747869232359532, -1.7156000501705062, -1.1607653490834746]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7381570884942334, -2.691830897154375, -1.5723435538368449]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2193048625180145, -2.110046138362112, -1.487615752892796]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.307437118755195, -3.3388631815714565, -1.8903084023337526]}}