{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:14.342415", "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": "2013-Jan-07_to_2013-Jan-09_33.5_-13.5"}, "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": 2013010000297}, "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": "January 07 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 2013"}, "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": 66238.10768967264}, "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": ["Malawi", "Zambia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-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": -13.5}, "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": 33.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, -13.5], [30.85, -13.25], [30.75, -13.0], [30.97, -12.47], [31.32, -12.32], [31.47, -11.97], [31.82, -11.82], [31.97, -11.47], [32.5, -11.25], [32.75, -11.35], [33.0, -11.25], [33.25, -11.35], [33.5, -11.25], [34.03, -11.47], [34.25, -12.0], [34.15, -12.25], [34.18, -12.32], [34.53, -12.47], [34.75, -13.0], [34.65, -13.25], [34.75, -13.5], [34.65, -13.75], [34.75, -14.0], [34.53, -14.53], [34.0, -14.75], [33.47, -14.53], [33.32, -14.18], [33.25, -14.15], [33.0, -14.25], [32.75, -14.15], [32.5, -14.25], [32.25, -14.15], [32.18, -14.18], [32.03, -14.53], [31.68, -14.68], [31.53, -15.03], [31.0, -15.25], [30.47, -15.03], [30.25, -14.5], [30.47, -13.97], [30.82, -13.82], [30.85, -13.75], [30.75, -13.5]]]]}, "2013-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, -13.5], [30.85, -13.25], [30.75, -13.0], [30.97, -12.47], [31.32, -12.32], [31.47, -11.97], [31.82, -11.82], [31.97, -11.47], [32.5, -11.25], [32.75, -11.35], [33.0, -11.25], [33.25, -11.35], [33.5, -11.25], [34.03, -11.47], [34.25, -12.0], [34.15, -12.25], [34.18, -12.32], [34.53, -12.47], [34.75, -13.0], [34.65, -13.25], [34.75, -13.5], [34.65, -13.75], [34.75, -14.0], [34.53, -14.53], [34.0, -14.75], [33.47, -14.53], [33.32, -14.18], [33.25, -14.15], [33.0, -14.25], [32.75, -14.15], [32.5, -14.25], [32.25, -14.15], [32.18, -14.18], [32.03, -14.53], [31.68, -14.68], [31.53, -15.03], [31.0, -15.25], [30.47, -15.03], [30.25, -14.5], [30.47, -13.97], [30.82, -13.82], [30.85, -13.75], [30.75, -13.5]]]]}, "2013-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, -13.5], [30.85, -13.25], [30.75, -13.0], [30.97, -12.47], [31.32, -12.32], [31.47, -11.97], [31.82, -11.82], [31.97, -11.47], [32.5, -11.25], [32.75, -11.35], [33.0, -11.25], [33.25, -11.35], [33.5, -11.25], [34.03, -11.47], [34.25, -12.0], [34.15, -12.25], [34.18, -12.32], [34.53, -12.47], [34.75, -13.0], [34.65, -13.25], [34.75, -13.5], [34.65, -13.75], [34.75, -14.0], [34.53, -14.53], [34.0, -14.75], [33.47, -14.53], [33.32, -14.18], [33.25, -14.15], [33.0, -14.25], [32.75, -14.15], [32.5, -14.25], [32.25, -14.15], [32.18, -14.18], [32.03, -14.53], [31.68, -14.68], [31.53, -15.03], [31.0, -15.25], [30.47, -15.03], [30.25, -14.5], [30.47, -13.97], [30.82, -13.82], [30.85, -13.75], [30.75, -13.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.715412259037521}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.031393854261462}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.534676091647498, 21.08782522526468, 21.12368193761057]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.657948991400644, 18.849685261659317, 18.40170994630455]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7645553582924394, -2.199540050545778, -2.130086153946169]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1460559535148604, -2.580090114946529, -2.715412259037521]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5783625446473122, -2.010173575817151, -1.9900529515950638]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9561738666842023, -2.5525080976635333, -2.7041699362000458]}}