{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:15.697117", "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": "2015-Feb-01_to_2015-Feb-03_32.5_-28.0"}, "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": 2015020000034}, "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 01 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 03 2015"}, "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": 92014.7262157547}, "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": ["Eswatini", "Mozambique", "South Africa"]}, "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": ["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": -28.0}, "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": 32.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.85, -29.25], [30.75, -29.0], [30.85, -28.75], [30.75, -28.5], [30.85, -28.25], [30.75, -28.0], [30.85, -27.75], [30.75, -27.5], [30.85, -27.25], [30.75, -27.0], [30.97, -26.47], [31.5, -26.25], [31.75, -26.35], [31.82, -26.32], [31.97, -25.97], [32.5, -25.75], [33.03, -25.97], [33.25, -26.5], [33.15, -26.75], [33.18, -26.82], [33.53, -26.97], [33.75, -27.5], [33.65, -27.75], [33.75, -28.0], [33.65, -28.25], [33.75, -28.5], [33.65, -28.75], [33.75, -29.0], [33.65, -29.25], [33.68, -29.32], [34.03, -29.47], [34.25, -30.0], [34.15, -30.25], [34.25, -30.5], [34.15, -30.75], [34.25, -31.0], [34.03, -31.53], [33.5, -31.75], [33.25, -31.65], [33.0, -31.75], [32.75, -31.65], [32.5, -31.75], [31.97, -31.53], [31.75, -31.0], [31.88, -30.7], [31.75, -30.65], [31.5, -30.75], [30.97, -30.53], [30.75, -30.0], [30.85, -29.75], [30.75, -29.5], [30.85, -29.25]]]]}, "2015-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.85, -29.25], [30.75, -29.0], [30.85, -28.75], [30.75, -28.5], [30.85, -28.25], [30.75, -28.0], [30.85, -27.75], [30.75, -27.5], [30.85, -27.25], [30.75, -27.0], [30.97, -26.47], [31.5, -26.25], [31.75, -26.35], [31.82, -26.32], [31.97, -25.97], [32.5, -25.75], [33.03, -25.97], [33.25, -26.5], [33.15, -26.75], [33.18, -26.82], [33.53, -26.97], [33.75, -27.5], [33.65, -27.75], [33.75, -28.0], [33.65, -28.25], [33.75, -28.5], [33.65, -28.75], [33.75, -29.0], [33.65, -29.25], [33.68, -29.32], [34.03, -29.47], [34.25, -30.0], [34.15, -30.25], [34.25, -30.5], [34.15, -30.75], [34.25, -31.0], [34.03, -31.53], [33.5, -31.75], [33.25, -31.65], [33.0, -31.75], [32.75, -31.65], [32.5, -31.75], [31.97, -31.53], [31.75, -31.0], [31.88, -30.7], [31.75, -30.65], [31.5, -30.75], [30.97, -30.53], [30.75, -30.0], [30.85, -29.75], [30.75, -29.5], [30.85, -29.25]]]]}, "2015-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.85, -29.25], [30.75, -29.0], [30.85, -28.75], [30.75, -28.5], [30.85, -28.25], [30.75, -28.0], [30.85, -27.75], [30.75, -27.5], [30.85, -27.25], [30.75, -27.0], [30.97, -26.47], [31.5, -26.25], [31.75, -26.35], [31.82, -26.32], [31.97, -25.97], [32.5, -25.75], [33.03, -25.97], [33.25, -26.5], [33.15, -26.75], [33.18, -26.82], [33.53, -26.97], [33.75, -27.5], [33.65, -27.75], [33.75, -28.0], [33.65, -28.25], [33.75, -28.5], [33.65, -28.75], [33.75, -29.0], [33.65, -29.25], [33.68, -29.32], [34.03, -29.47], [34.25, -30.0], [34.15, -30.25], [34.25, -30.5], [34.15, -30.75], [34.25, -31.0], [34.03, -31.53], [33.5, -31.75], [33.25, -31.65], [33.0, -31.75], [32.75, -31.65], [32.5, -31.75], [31.97, -31.53], [31.75, -31.0], [31.88, -30.7], [31.75, -30.65], [31.5, -30.75], [30.97, -30.53], [30.75, -30.0], [30.85, -29.75], [30.75, -29.5], [30.85, -29.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.579937691962357}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7195728973763758}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.948381534648775, 21.12481561481286, 22.991584289116645]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.29939785277162, 16.821554356245144, 20.351260778217636]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0691430109433497, -3.9483274391016154, -2.1412482420841625]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.9661524702841007, -6.579937691962357, -3.809202686932565]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7399450757243813, -3.4042588460387404, -1.803044522515204]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.567816911681447, -4.663165713325935, -2.535891324897016]}}