{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:46.648353", "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": "2012-Mar-04_to_2012-Mar-07_55.5_-21.5"}, "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": 2012030000390}, "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": "March 04 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 07 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 51844.77424991972}, "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": ["Mauritius"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Indian-Ocean"]}, "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": -21.5}, "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": 55.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "55.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 54.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 58.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[54.47, -22.03], [54.25, -21.5], [54.47, -20.97], [55.0, -20.75], [55.25, -20.85], [55.5, -20.75], [55.75, -20.85], [55.82, -20.82], [55.85, -20.75], [55.75, -20.5], [55.97, -19.97], [56.5, -19.75], [56.75, -19.85], [57.0, -19.75], [57.25, -19.85], [57.5, -19.75], [58.03, -19.97], [58.18, -20.32], [58.25, -20.35], [58.5, -20.25], [59.03, -20.47], [59.25, -21.0], [59.03, -21.53], [58.68, -21.68], [58.53, -22.03], [58.0, -22.25], [57.75, -22.15], [57.68, -22.18], [57.53, -22.53], [57.0, -22.75], [56.75, -22.65], [56.5, -22.75], [56.25, -22.65], [56.0, -22.75], [55.47, -22.53], [55.32, -22.18], [55.25, -22.15], [55.0, -22.25], [54.47, -22.03]]]]}, "2012-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[54.47, -22.03], [54.25, -21.5], [54.47, -20.97], [55.0, -20.75], [55.25, -20.85], [55.5, -20.75], [55.75, -20.85], [55.82, -20.82], [55.85, -20.75], [55.75, -20.5], [55.97, -19.97], [56.5, -19.75], [56.75, -19.85], [57.0, -19.75], [57.25, -19.85], [57.5, -19.75], [58.03, -19.97], [58.18, -20.32], [58.25, -20.35], [58.5, -20.25], [59.03, -20.47], [59.25, -21.0], [59.03, -21.53], [58.68, -21.68], [58.53, -22.03], [58.0, -22.25], [57.75, -22.15], [57.68, -22.18], [57.53, -22.53], [57.0, -22.75], [56.75, -22.65], [56.5, -22.75], [56.25, -22.65], [56.0, -22.75], [55.47, -22.53], [55.32, -22.18], [55.25, -22.15], [55.0, -22.25], [54.47, -22.03]]]]}, "2012-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[54.47, -22.03], [54.25, -21.5], [54.47, -20.97], [55.0, -20.75], [55.25, -20.85], [55.5, -20.75], [55.75, -20.85], [55.82, -20.82], [55.85, -20.75], [55.75, -20.5], [55.97, -19.97], [56.5, -19.75], [56.75, -19.85], [57.0, -19.75], [57.25, -19.85], [57.5, -19.75], [58.03, -19.97], [58.18, -20.32], [58.25, -20.35], [58.5, -20.25], [59.03, -20.47], [59.25, -21.0], [59.03, -21.53], [58.68, -21.68], [58.53, -22.03], [58.0, -22.25], [57.75, -22.15], [57.68, -22.18], [57.53, -22.53], [57.0, -22.75], [56.75, -22.65], [56.5, -22.75], [56.25, -22.65], [56.0, -22.75], [55.47, -22.53], [55.32, -22.18], [55.25, -22.15], [55.0, -22.25], [54.47, -22.03]]]]}, "2012-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[54.47, -22.03], [54.25, -21.5], [54.47, -20.97], [55.0, -20.75], [55.25, -20.85], [55.5, -20.75], [56.03, -20.97], [56.25, -21.5], [56.03, -22.03], [55.5, -22.25], [55.25, -22.15], [55.0, -22.25], [54.47, -22.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.942500183622883}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.200494675944043}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.25412906695908, 25.027152706698303, 25.22834699272545, 24.850608777045977]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.128974360371046, 23.862327030002575, 24.217467395531628, 24.143139087121142]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.133222218981814, -1.335672041121032, -1.1094153772262638, -1.409064190471213]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6911510616680516, -1.942500183622883, -1.5699770005836058, -1.631578660204923]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.688652841838474, -2.034006544766154, -1.6842578736633491, -1.8027167057265319]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2157618520705493, -2.591828556562262, -1.8934741190045596, -1.9001176148502845]}}