{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:36.165553", "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": "2018-Apr-03_to_2018-Apr-08_39.5_-10.0"}, "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": 2018040000217}, "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": "April 03 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 54485.961181937426}, "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": ["Mozambique", "Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "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": []}, "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": -10.0}, "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": 39.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.35, -9.75], [38.25, -9.5], [38.47, -8.97], [39.0, -8.75], [39.53, -8.97], [39.68, -9.32], [40.03, -9.47], [40.25, -10.0], [40.03, -10.53], [39.68, -10.68], [39.53, -11.03], [39.0, -11.25], [38.47, -11.03], [38.25, -10.5], [38.35, -10.25], [38.25, -10.0], [38.35, -9.75]]]]}, "2018-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.35, -9.75], [38.25, -9.5], [38.47, -8.97], [39.0, -8.75], [39.53, -8.97], [39.68, -9.32], [40.03, -9.47], [40.25, -10.0], [40.03, -10.53], [39.68, -10.68], [39.53, -11.03], [39.0, -11.25], [38.47, -11.03], [38.25, -10.5], [38.35, -10.25], [38.25, -10.0], [38.35, -9.75]]]]}, "2018-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.35, -9.75], [38.25, -9.5], [38.47, -8.97], [39.0, -8.75], [39.53, -8.97], [39.68, -9.32], [40.03, -9.47], [40.25, -10.0], [40.03, -10.53], [39.68, -10.68], [39.53, -11.03], [39.0, -11.25], [38.47, -11.03], [38.25, -10.5], [38.35, -10.25], [38.25, -10.0], [38.35, -9.75]]]]}, "2018-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, -12.0], [37.97, -11.47], [38.32, -11.32], [38.47, -10.97], [38.82, -10.82], [38.97, -10.47], [39.5, -10.25], [39.75, -10.35], [40.0, -10.25], [40.53, -10.47], [40.75, -11.0], [40.65, -11.25], [40.75, -11.5], [40.65, -11.75], [40.75, -12.0], [40.65, -12.25], [40.75, -12.5], [40.65, -12.75], [40.75, -13.0], [40.53, -13.53], [40.0, -13.75], [39.75, -13.65], [39.5, -13.75], [39.25, -13.65], [39.0, -13.75], [38.47, -13.53], [38.25, -13.0], [38.35, -12.75], [38.32, -12.68], [37.97, -12.53], [37.75, -12.0]]]]}, "2018-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, -12.0], [37.97, -11.47], [38.32, -11.32], [38.47, -10.97], [38.82, -10.82], [38.97, -10.47], [39.5, -10.25], [39.75, -10.35], [40.0, -10.25], [40.53, -10.47], [40.75, -11.0], [40.65, -11.25], [40.75, -11.5], [40.65, -11.75], [40.75, -12.0], [40.65, -12.25], [40.75, -12.5], [40.65, -12.75], [40.75, -13.0], [40.53, -13.53], [40.0, -13.75], [39.75, -13.65], [39.5, -13.75], [39.25, -13.65], [39.0, -13.75], [38.47, -13.53], [38.25, -13.0], [38.35, -12.75], [38.32, -12.68], [37.97, -12.53], [37.75, -12.0]]]]}, "2018-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, -12.0], [37.97, -11.47], [38.32, -11.32], [38.47, -10.97], [38.82, -10.82], [38.97, -10.47], [39.5, -10.25], [39.75, -10.35], [40.0, -10.25], [40.53, -10.47], [40.75, -11.0], [40.65, -11.25], [40.75, -11.5], [40.65, -11.75], [40.75, -12.0], [40.65, -12.25], [40.75, -12.5], [40.65, -12.75], [40.75, -13.0], [40.53, -13.53], [40.0, -13.75], [39.75, -13.65], [39.5, -13.75], [39.25, -13.65], [39.0, -13.75], [38.47, -13.53], [38.25, -13.0], [38.35, -12.75], [38.32, -12.68], [37.97, -12.53], [37.75, -12.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.0609968104612335}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3975872275371306}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.366603444672705, 23.0257647841471, 23.226787343069702, 23.653306044133842, 23.67490534534295, 23.88783283161166]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.874510615093982, 22.293039427126246, 22.65693140431989, 23.09925584402947, 22.84553155263825, 23.210053509450574]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2868328317124451, -1.6414716981556552, -1.4446698853724342, -1.4699697191273304, -1.4467980737039738, -1.224504537600333]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4677463066578298, -2.0609968104612335, -1.5902117724583036, -1.7650917893268456, -1.7010621176075915, -1.4760779721227095]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.575706949329795, -1.993649169928453, -1.718143834843609, -1.734806082629989, -1.7026322691615243, -1.4576075926533503]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6672845340553675, -2.46410829556082, -1.9588471390973126, -2.3445748883060094, -1.8882031344185983, -1.7918069997397688]}}