{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:51.448146", "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-Jul-02_to_2012-Jul-06_353.5_15.0"}, "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": 2012070000230}, "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": "July 02 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2012"}, "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": 65563.20015008157}, "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": ["Mali", "Mauritania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-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": 15.0}, "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": 353.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 349.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 353.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.68, 16.18], [-9.53, 16.53], [-9.0, 16.75], [-8.75, 16.65], [-8.5, 16.75], [-8.25, 16.65], [-8.0, 16.75], [-7.75, 16.65], [-7.68, 16.68], [-7.53, 17.03], [-7.0, 17.25], [-6.47, 17.03], [-6.25, 16.5], [-6.35, 16.25], [-6.32, 16.18], [-5.97, 16.03], [-5.75, 15.5], [-5.85, 15.25], [-5.75, 15.0], [-5.97, 14.47], [-6.5, 14.25], [-7.0, 14.46], [-7.5, 14.25], [-7.75, 14.35], [-8.0, 14.25], [-8.25, 14.35], [-8.5, 14.25], [-8.75, 14.35], [-9.0, 14.25], [-9.25, 14.35], [-9.5, 14.25], [-9.75, 14.35], [-10.0, 14.25], [-10.53, 14.47], [-10.75, 15.0], [-10.53, 15.53], [-10.18, 15.68], [-10.03, 16.03], [-9.68, 16.18]]]]}, "2012-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.68, 16.18], [-9.53, 16.53], [-9.0, 16.75], [-8.75, 16.65], [-8.5, 16.75], [-8.25, 16.65], [-8.0, 16.75], [-7.75, 16.65], [-7.68, 16.68], [-7.53, 17.03], [-7.0, 17.25], [-6.47, 17.03], [-6.25, 16.5], [-6.35, 16.25], [-6.32, 16.18], [-5.97, 16.03], [-5.75, 15.5], [-5.85, 15.25], [-5.75, 15.0], [-5.97, 14.47], [-6.5, 14.25], [-7.0, 14.46], [-7.5, 14.25], [-7.75, 14.35], [-8.0, 14.25], [-8.25, 14.35], [-8.5, 14.25], [-8.75, 14.35], [-9.0, 14.25], [-9.25, 14.35], [-9.5, 14.25], [-9.75, 14.35], [-10.0, 14.25], [-10.53, 14.47], [-10.75, 15.0], [-10.53, 15.53], [-10.18, 15.68], [-10.03, 16.03], [-9.68, 16.18]]]]}, "2012-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.68, 16.18], [-9.53, 16.53], [-9.0, 16.75], [-8.75, 16.65], [-8.5, 16.75], [-8.25, 16.65], [-8.0, 16.75], [-7.75, 16.65], [-7.68, 16.68], [-7.53, 17.03], [-7.0, 17.25], [-6.47, 17.03], [-6.25, 16.5], [-6.35, 16.25], [-6.32, 16.18], [-5.97, 16.03], [-5.75, 15.5], [-5.85, 15.25], [-5.75, 15.0], [-5.97, 14.47], [-6.5, 14.25], [-7.0, 14.46], [-7.5, 14.25], [-7.75, 14.35], [-8.0, 14.25], [-8.25, 14.35], [-8.32, 14.32], [-8.47, 13.97], [-8.82, 13.82], [-8.97, 13.47], [-9.5, 13.25], [-10.03, 13.47], [-10.25, 14.0], [-10.12, 14.3], [-10.53, 14.47], [-10.75, 15.0], [-10.53, 15.53], [-10.18, 15.68], [-10.03, 16.03], [-9.68, 16.18]]]]}, "2012-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.0, 15.25], [-8.7, 15.12], [-8.65, 15.25], [-8.75, 15.5], [-8.53, 16.03], [-8.18, 16.18], [-8.03, 16.53], [-7.68, 16.68], [-7.53, 17.03], [-7.0, 17.25], [-6.47, 17.03], [-6.25, 16.5], [-6.35, 16.25], [-6.32, 16.18], [-5.97, 16.03], [-5.75, 15.5], [-5.85, 15.25], [-5.75, 15.0], [-5.97, 14.47], [-6.5, 14.25], [-7.0, 14.46], [-7.5, 14.25], [-7.75, 14.35], [-8.0, 14.25], [-8.3, 14.38], [-8.47, 13.97], [-8.82, 13.82], [-8.97, 13.47], [-9.5, 13.25], [-10.03, 13.47], [-10.25, 14.0], [-10.03, 14.53], [-9.68, 14.68], [-9.53, 15.03], [-9.0, 15.25]]]]}, "2012-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.0, 15.25], [-8.47, 15.03], [-8.25, 14.5], [-8.47, 13.97], [-8.82, 13.82], [-8.97, 13.47], [-9.5, 13.25], [-10.03, 13.47], [-10.25, 14.0], [-10.03, 14.53], [-9.68, 14.68], [-9.53, 15.03], [-9.0, 15.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.874861117842556}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.4445220941723598}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.760769968264412, 29.70941400371953, 28.713115499128435, 28.868348928133003, 27.133285355860153]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.58978427158388, 27.865538111940396, 26.243041455548507, 26.99679974473844, 26.801163271261714]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.778028622462119, -2.677884403645558, -3.300450334458449, -2.916647539666968, -2.5278704004281565]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.874861117842556, -3.4000043595973466, -4.045639009457034, -3.589937596730863, -2.6883291613820575]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.789372693192246, -1.572892743413427, -1.8886419628099973, -1.6729909783560801, -1.420457655793117]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.1756291814537136, -1.8655211933502354, -2.2856987446117714, -2.0106769797680832, -1.4707911748960996]}}