{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:48.127667", "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": "2010-Oct-06_to_2010-Oct-09_344.0_20.0"}, "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": 2010100000330}, "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": "October 06 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 09 2010"}, "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": 81616.52476930103}, "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": ["Mauritania", "Morocco"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 20.0}, "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": 344.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "344.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 343.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 345.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.03, 22.03], [-16.68, 22.18], [-16.65, 22.25], [-16.75, 22.5], [-16.53, 23.03], [-16.0, 23.25], [-15.47, 23.03], [-15.25, 22.5], [-15.35, 22.25], [-15.25, 22.0], [-15.35, 21.75], [-15.32, 21.68], [-14.97, 21.53], [-14.75, 21.0], [-14.85, 20.75], [-14.82, 20.68], [-14.47, 20.53], [-14.25, 20.0], [-14.47, 19.47], [-15.0, 19.25], [-15.25, 19.35], [-15.5, 19.25], [-15.75, 19.35], [-16.0, 19.25], [-16.53, 19.47], [-16.75, 20.0], [-16.65, 20.25], [-16.68, 20.32], [-17.03, 20.47], [-17.25, 21.0], [-17.15, 21.25], [-17.25, 21.5], [-17.03, 22.03]]]]}, "2010-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.03, 22.03], [-16.68, 22.18], [-16.65, 22.25], [-16.75, 22.5], [-16.53, 23.03], [-16.0, 23.25], [-15.47, 23.03], [-15.25, 22.5], [-15.35, 22.25], [-15.25, 22.0], [-15.35, 21.75], [-15.32, 21.68], [-14.97, 21.53], [-14.75, 21.0], [-14.85, 20.75], [-14.82, 20.68], [-14.47, 20.53], [-14.25, 20.0], [-14.46, 19.5], [-14.25, 19.0], [-14.35, 18.75], [-14.25, 18.5], [-14.35, 18.25], [-14.25, 18.0], [-14.47, 17.47], [-14.82, 17.32], [-14.85, 17.25], [-14.75, 17.0], [-14.97, 16.47], [-15.32, 16.32], [-15.47, 15.97], [-16.0, 15.75], [-16.53, 15.97], [-16.75, 16.5], [-16.65, 16.75], [-16.75, 17.0], [-16.65, 17.25], [-16.75, 17.5], [-16.65, 17.75], [-16.75, 18.0], [-16.65, 18.25], [-16.75, 18.5], [-16.65, 18.75], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75], [-16.75, 20.0], [-16.65, 20.25], [-16.68, 20.32], [-17.03, 20.47], [-17.25, 21.0], [-17.15, 21.25], [-17.25, 21.5], [-17.03, 22.03]]]]}, "2010-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.03, 22.03], [-16.68, 22.18], [-16.65, 22.25], [-16.75, 22.5], [-16.53, 23.03], [-16.0, 23.25], [-15.47, 23.03], [-15.25, 22.5], [-15.35, 22.25], [-15.25, 22.0], [-15.35, 21.75], [-15.32, 21.68], [-14.97, 21.53], [-14.75, 21.0], [-14.85, 20.75], [-14.82, 20.68], [-14.47, 20.53], [-14.25, 20.0], [-14.46, 19.5], [-14.25, 19.0], [-14.35, 18.75], [-14.25, 18.5], [-14.35, 18.25], [-14.25, 18.0], [-14.47, 17.47], [-14.82, 17.32], [-14.85, 17.25], [-14.75, 17.0], [-14.97, 16.47], [-15.32, 16.32], [-15.47, 15.97], [-16.0, 15.75], [-16.53, 15.97], [-16.75, 16.5], [-16.65, 16.75], [-16.75, 17.0], [-16.65, 17.25], [-16.75, 17.5], [-16.65, 17.75], [-16.75, 18.0], [-16.65, 18.25], [-16.75, 18.5], [-16.65, 18.75], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75], [-16.75, 20.0], [-16.65, 20.25], [-16.68, 20.32], [-17.03, 20.47], [-17.25, 21.0], [-17.15, 21.25], [-17.25, 21.5], [-17.03, 22.03]]]]}, "2010-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 17.25], [-16.75, 17.5], [-16.65, 17.75], [-16.75, 18.0], [-16.65, 18.25], [-16.75, 18.5], [-16.65, 18.75], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75], [-16.75, 20.0], [-16.53, 20.53], [-16.0, 20.75], [-15.47, 20.53], [-15.32, 20.18], [-14.97, 20.03], [-14.82, 19.68], [-14.47, 19.53], [-14.25, 19.0], [-14.35, 18.75], [-14.25, 18.5], [-14.35, 18.25], [-14.25, 18.0], [-14.47, 17.47], [-14.82, 17.32], [-14.85, 17.25], [-14.75, 17.0], [-14.97, 16.47], [-15.32, 16.32], [-15.47, 15.97], [-16.0, 15.75], [-16.53, 15.97], [-16.75, 16.5], [-16.65, 16.75], [-16.75, 17.0], [-16.65, 17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.2848278541518425}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.9554171027518685}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.831858373998728, 26.785786421491594, 26.111439833204372, 26.84766061251605]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.521943210044583, 22.647997039068002, 22.172976948891858, 25.441320912335527]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.212892072381659, -3.681043799477905, -4.206462523015842, -3.812092460912]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.0731295600963335, -5.0080083588858315, -5.2848278541518425, -4.431708724356383]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.470987864348574, -1.5209389691983755, -1.7724074705638313, -1.7564329030998327]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.686542513102221, -1.727949415338934, -2.0769585081117334, -1.9861860494019858]}}