{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:13.607460", "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": "2016-Sep-18_to_2016-Sep-22_50.0_-17.0"}, "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": 2016090000474}, "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": "September 18 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 130195.8065931873}, "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": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "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", "Mozambique Channel"]}, "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": -17.0}, "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": 50.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "50.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 52.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.35, -16.25], [46.25, -16.0], [46.47, -15.47], [46.82, 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-16.25], [46.25, -16.0], [46.47, -15.47], [46.82, -15.32], [46.85, -15.25], [46.75, -15.0], [46.97, -14.47], [47.5, -14.25], [47.75, -14.35], [48.0, -14.25], [48.53, -14.47], [48.68, -14.82], [48.75, -14.85], [49.0, -14.75], [49.53, -14.97], [49.68, -15.32], [49.75, -15.35], [50.0, -15.25], [50.25, -15.35], [50.5, -15.25], [51.03, -15.47], [51.18, -15.82], [51.53, -15.97], [51.75, -16.5], [51.54, -17.0], [51.68, -17.32], [52.03, -17.47], [52.18, -17.82], [52.53, -17.97], [52.75, -18.5], [52.53, -19.03], [52.0, -19.25], [51.47, -19.03], [51.32, -18.68], [51.25, -18.65], [51.0, -18.75], [50.75, -18.65], [50.5, -18.75], [49.97, -18.53], [49.82, -18.18], [49.7, -18.12], [49.53, -18.53], [49.18, -18.68], [49.03, -19.03], [48.5, -19.25], [48.25, -19.15], [48.0, -19.25], [47.47, -19.03], [47.25, -18.5], [47.35, -18.25], [47.25, -18.0], [47.35, -17.75], [47.32, -17.68], [47.25, -17.65], [47.0, -17.75], [46.47, -17.53], [46.25, -17.0], [46.35, -16.75], [46.25, -16.5], [46.35, -16.25]]]]}, 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-2.748795495833292}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6574902427017753}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.217872373889293, 20.203595930068673, 20.29872029447347, 22.5558906239433, 22.449495630190256]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.1074053845212, 14.18387635194506, 15.063584351240934, 21.690206471635975, 22.449495630190256]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5168894236258608, -1.7826837802776394, -1.7727048788699655, -0.9965539012066813, -0.8097822290464478]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.638655197561775, 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