{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:17.784176", "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": "2015-Feb-15_to_2015-Feb-20_35.5_-18.5"}, "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": 2015020000623}, "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": "February 15 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 20 2015"}, "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": 388631.5348018435}, "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": ["Malawi", "Mozambique", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-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": ["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": -18.5}, "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": 35.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.25}, "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": -24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.0, -22.75], [34.53, -22.97], [34.75, -23.5], [34.53, -24.03], [34.0, -24.25], [33.47, -24.03], [33.25, -23.5], [33.47, -22.97], [34.0, -22.75]]]]}, "2015-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.75, -19.5], [29.97, -18.97], [30.5, -18.75], [30.75, -18.85], [30.82, -18.82], [30.85, -18.75], [30.75, -18.5], [30.97, -17.97], [31.32, -17.82], [31.47, -17.47], [31.82, -17.32], [31.85, -17.25], [31.75, -17.0], [31.85, -16.75], [31.82, -16.68], [31.47, -16.53], [31.25, -16.0], [31.47, -15.47], [31.82, -15.32], [31.97, -14.97], [32.5, -14.75], [32.75, -14.85], [33.0, -14.75], [33.25, -14.85], [33.5, -14.75], [33.75, -14.85], [34.0, -14.75], [34.53, -14.97], [34.68, -15.32], [34.75, -15.35], [35.0, -15.25], [35.53, -15.47], [35.68, -15.82], [36.03, -15.97], [36.18, -16.32], [36.25, -16.35], [36.5, -16.25], [37.03, -16.47], [37.18, -16.82], [37.25, -16.85], [37.5, -16.75], [38.03, -16.97], [38.2, -17.37], [38.5, -17.25], [39.03, -17.47], [39.25, -18.0], [39.03, -18.53], [38.5, -18.75], [38.0, -18.54], [37.5, -18.75], [37.25, -18.65], [37.18, -18.68], [37.03, -19.03], [36.68, -19.18], [36.63, -19.3], [37.03, -19.47], [37.25, -20.0], [37.15, -20.25], [37.25, -20.5], [37.15, -20.75], [37.25, -21.0], [37.03, -21.53], [36.5, -21.75], [36.2, -21.62], [36.03, -22.03], [35.68, -22.18], [35.65, -22.25], [35.75, -22.5], [35.65, -22.75], [35.75, -23.0], [35.65, -23.25], [35.75, -23.5], [35.65, -23.75], [35.75, -24.0], [35.53, -24.53], [35.0, -24.75], [34.75, -24.65], [34.5, -24.75], [33.97, -24.53], [33.82, -24.18], [33.47, -24.03], [33.25, -23.5], [33.35, -23.25], [33.32, -23.18], [32.97, -23.03], [32.75, -22.5], [32.85, -22.25], [32.75, -22.0], [32.97, -21.47], [33.32, -21.32], [33.35, -21.25], [33.32, -21.18], [33.25, -21.15], [33.0, -21.25], [32.47, -21.03], [32.25, -20.5], [32.35, -20.25], [32.32, -20.18], [32.25, -20.15], [32.0, -20.25], [31.75, -20.15], [31.68, -20.18], [31.53, -20.53], [31.0, -20.75], [30.47, -20.53], [30.32, -20.18], [29.97, -20.03], [29.75, -19.5]]]]}, "2015-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.75, -19.5], [29.97, -18.97], [30.5, -18.75], [30.75, -18.85], [30.82, -18.82], [30.85, -18.75], [30.75, -18.5], [30.97, -17.97], [31.32, -17.82], [31.47, -17.47], [31.82, -17.32], [31.85, -17.25], [31.75, -17.0], [31.85, -16.75], [31.82, -16.68], [31.47, -16.53], [31.25, -16.0], [31.47, -15.47], [31.82, -15.32], [31.97, -14.97], [32.5, -14.75], [32.75, -14.85], [33.0, -14.75], [33.25, -14.85], [33.5, -14.75], [33.75, -14.85], [34.0, -14.75], [34.53, -14.97], [34.68, -15.32], [34.75, -15.35], [35.0, -15.25], [35.53, -15.47], [35.68, -15.82], [36.03, -15.97], [36.18, -16.32], [36.25, -16.35], [36.5, -16.25], [37.03, -16.47], [37.18, -16.82], [37.25, -16.85], [37.5, -16.75], [37.75, -16.85], [38.0, -16.75], [38.25, -16.85], [38.5, -16.75], [38.75, -16.85], [39.0, -16.75], [39.25, -16.85], [39.5, -16.75], [39.75, -16.85], [40.0, -16.75], [40.53, -16.97], [40.75, -17.5], [40.53, -18.03], [40.18, -18.18], [40.03, -18.53], [39.5, -18.75], [39.25, -18.65], [39.0, -18.75], [38.75, -18.65], [38.5, -18.75], [38.25, -18.65], [38.0, -18.75], [37.75, -18.65], [37.5, -18.75], [37.25, -18.65], [37.18, -18.68], [37.03, -19.03], [36.68, -19.18], [36.63, -19.3], [37.03, -19.47], [37.25, -20.0], [37.15, -20.25], [37.25, -20.5], [37.15, -20.75], [37.25, -21.0], [37.03, -21.53], [36.5, -21.75], [36.2, -21.62], [36.03, -22.03], [35.68, -22.18], [35.65, -22.25], [35.75, -22.5], [35.65, -22.75], [35.75, -23.0], [35.65, -23.25], [35.75, -23.5], [35.65, -23.75], [35.75, -24.0], [35.53, -24.53], [35.0, -24.75], [34.75, -24.65], [34.5, -24.75], [33.97, -24.53], [33.82, -24.18], [33.47, -24.03], [33.25, -23.5], [33.35, -23.25], [33.32, -23.18], [32.97, -23.03], [32.75, -22.5], [32.85, -22.25], [32.75, -22.0], [32.97, -21.47], [33.32, -21.32], [33.35, -21.25], [33.32, -21.18], [33.25, -21.15], [33.0, -21.25], [32.47, -21.03], [32.25, -20.5], [32.35, -20.25], [32.32, -20.18], [32.25, -20.15], [32.0, -20.25], [31.75, -20.15], [31.68, -20.18], [31.53, -20.53], [31.0, -20.75], [30.47, -20.53], [30.32, -20.18], [29.97, -20.03], [29.75, -19.5]]]]}, "2015-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.75, -19.5], [29.97, -18.97], [30.5, -18.75], [30.75, -18.85], [30.82, -18.82], [30.85, -18.75], [30.75, -18.5], [30.97, -17.97], [31.32, -17.82], [31.47, -17.47], [31.82, -17.32], [31.85, -17.25], [31.75, -17.0], [31.85, -16.75], [31.82, -16.68], [31.47, -16.53], [31.25, -16.0], [31.47, -15.47], [31.82, -15.32], [31.97, -14.97], [32.5, -14.75], [32.75, -14.85], [33.0, -14.75], [33.25, -14.85], [33.5, -14.75], [33.75, -14.85], [34.0, -14.75], [34.53, -14.97], [34.68, -15.32], [34.75, -15.35], [35.0, -15.25], [35.53, -15.47], [35.68, -15.82], [36.03, -15.97], [36.18, -16.32], [36.25, -16.35], [36.5, -16.25], [37.03, -16.47], [37.18, -16.82], [37.25, -16.85], [37.5, -16.75], [37.75, -16.85], [38.0, -16.75], [38.25, -16.85], [38.5, -16.75], [38.75, -16.85], [39.0, -16.75], [39.25, -16.85], [39.5, -16.75], [39.75, -16.85], [40.0, -16.75], [40.53, -16.97], [40.75, -17.5], [40.53, -18.03], [40.18, -18.18], [40.03, -18.53], [39.5, -18.75], [39.25, -18.65], [39.0, -18.75], [38.75, -18.65], [38.5, -18.75], [38.25, -18.65], [38.0, -18.75], [37.75, -18.65], [37.68, -18.68], [37.53, -19.03], [37.0, -19.25], [36.75, -19.15], [36.68, -19.18], [36.63, -19.3], [37.03, -19.47], [37.25, -20.0], [37.15, -20.25], [37.25, -20.5], [37.15, -20.75], [37.25, -21.0], [37.03, -21.53], [36.5, -21.75], [36.2, -21.62], [36.03, -22.03], [35.68, -22.18], [35.65, -22.25], [35.75, -22.5], [35.65, -22.75], [35.75, -23.0], [35.65, -23.25], [35.75, -23.5], [35.65, -23.75], [35.75, -24.0], [35.53, -24.53], [35.0, -24.75], [34.75, -24.65], [34.5, -24.75], [33.97, -24.53], [33.82, -24.18], [33.47, -24.03], [33.25, -23.5], [33.35, -23.25], [33.32, -23.18], [32.97, -23.03], [32.75, -22.5], [32.85, -22.25], [32.75, -22.0], [32.97, -21.47], [33.32, -21.32], [33.35, -21.25], [33.32, -21.18], [33.25, -21.15], [33.0, -21.25], [32.47, -21.03], [32.25, -20.5], [32.35, -20.25], [32.32, -20.18], [32.25, -20.15], [32.0, -20.25], [31.75, -20.15], [31.68, -20.18], [31.53, -20.53], [31.0, -20.75], [30.47, -20.53], [30.32, -20.18], [29.97, -20.03], [29.75, -19.5]]]]}, "2015-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.85, -18.75], [32.75, -18.5], [32.97, -17.97], [33.5, -17.75], [33.75, -17.85], [33.82, -17.82], [33.85, -17.75], [33.75, -17.5], [33.85, -17.25], [33.75, -17.0], [33.97, -16.47], [34.5, -16.25], [34.75, -16.35], [35.0, -16.25], [35.25, -16.35], [35.5, -16.25], [36.03, -16.47], [36.18, -16.82], [36.53, -16.97], [36.68, -17.32], [36.75, -17.35], [36.82, -17.32], [36.97, -16.97], [37.5, -16.75], [37.75, -16.85], [38.0, -16.75], [38.25, -16.85], [38.5, -16.75], [38.75, -16.85], [39.0, -16.75], [39.25, -16.85], [39.5, -16.75], [39.75, -16.85], [40.0, -16.75], [40.53, -16.97], [40.75, -17.5], [40.53, -18.03], [40.18, -18.18], [40.03, -18.53], [39.5, -18.75], [39.25, -18.65], [39.0, -18.75], [38.75, -18.65], [38.5, -18.75], [38.25, -18.65], [38.0, -18.75], [37.75, -18.65], [37.68, -18.68], [37.53, -19.03], [37.0, -19.25], [36.75, -19.15], [36.68, -19.18], [36.53, -19.53], [36.18, -19.68], [36.03, -20.03], [35.5, -20.25], [35.25, -20.15], [35.18, -20.18], [35.03, -20.53], [34.5, -20.75], [33.97, -20.53], [33.82, -20.18], [33.75, -20.15], [33.5, -20.25], [32.97, -20.03], [32.75, -19.5], [32.85, -19.25], [32.75, -19.0], [32.85, -18.75]]]]}, "2015-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.0, -17.25], [37.3, -17.37], [37.47, -16.97], [38.0, -16.75], [38.53, -16.97], [38.75, -17.5], [38.53, -18.03], [38.0, -18.25], [37.7, -18.12], [37.65, -18.25], [37.75, -18.5], [37.53, -19.03], [37.0, -19.25], [36.75, -19.15], [36.5, -19.25], [35.97, -19.03], [35.75, -18.5], [35.97, -17.97], [36.32, -17.82], [36.47, -17.47], [37.0, -17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.550865967135621}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.011391925025063}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.403889124351565, 23.350791328926505, 22.581861081850946, 22.138193094588814, 24.398383198364797, 26.158702076369536]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.403889124351565, 17.62142604313135, 15.962378198642455, 15.723894028146162, 21.914070762753965, 26.013254872091863]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.406116870430651, -2.307518346110353, -3.223638107924478, -3.731281428233978, -2.3452845557082984, -1.1935542854082826]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.406116870430651, -3.3613690233519833, -5.9368371478081485, -6.550865967135621, -4.164089487124556, -1.3220912972302017]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.490780627080859, -1.6114228548929628, -2.29793205935334, -2.6401412826395085, -1.8604283735023466, -1.3371488337842734]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.490780627080859, -2.3112715895757927, -4.201683723938707, -4.538401053613416, -3.180555311633448, -1.4229064329071617]}}