{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:42.541959", "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": "2014-Feb-15_to_2014-Feb-20_351.0_6.5"}, "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": 2014020000649}, "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 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 20 2014"}, "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": 85902.61175374303}, "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": ["C\u00f4te d'Ivoire", "Guinea", "Liberia", "Sierra Leone"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 6.5}, "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": 351.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "351.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 348.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 353.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.03, 4.97], [-8.25, 5.5], [-8.03, 6.03], [-7.5, 6.25], [-6.97, 6.03], [-6.75, 5.5], [-6.97, 4.97], [-7.5, 4.75], [-8.03, 4.97]]], [[[-9.53, 5.97], [-9.75, 6.5], [-9.53, 7.03], [-9.0, 7.25], [-8.47, 7.03], [-8.25, 6.5], [-8.47, 5.97], [-9.0, 5.75], [-9.53, 5.97]]]]}, "2014-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.03, 4.97], [-8.25, 5.5], [-8.03, 6.03], [-7.5, 6.25], [-6.97, 6.03], [-6.75, 5.5], [-6.97, 4.97], [-7.5, 4.75], [-8.03, 4.97]]], [[[-9.53, 5.97], [-9.75, 6.5], [-9.53, 7.03], [-9.0, 7.25], [-8.47, 7.03], [-8.25, 6.5], [-8.47, 5.97], [-9.0, 5.75], [-9.53, 5.97]]]]}, "2014-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.75, 6.5], [-9.53, 7.03], [-9.0, 7.25], [-8.7, 7.12], [-8.53, 7.53], [-8.18, 7.68], [-8.03, 8.03], [-7.5, 8.25], [-7.25, 8.15], [-7.0, 8.25], [-6.47, 8.03], [-6.25, 7.5], [-6.35, 7.25], [-6.25, 7.0], [-6.47, 6.47], [-7.0, 6.25], [-7.25, 6.35], [-7.32, 6.32], [-7.35, 6.25], [-7.32, 6.18], [-6.97, 6.03], [-6.75, 5.5], [-6.97, 4.97], [-7.5, 4.75], [-8.03, 4.97], [-8.18, 5.32], [-8.53, 5.47], [-8.7, 5.88], [-9.0, 5.75], [-9.53, 5.97], [-9.75, 6.5]]], [[[-12.25, 8.0], [-12.03, 8.53], [-11.5, 8.75], [-11.25, 8.65], [-11.0, 8.75], [-10.47, 8.53], [-10.25, 8.0], [-10.47, 7.47], [-11.0, 7.25], [-11.25, 7.35], [-11.5, 7.25], [-12.03, 7.47], [-12.25, 8.0]]]]}, "2014-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.03, 7.47], [-12.25, 8.0], [-12.03, 8.53], [-11.5, 8.75], [-11.25, 8.65], [-11.0, 8.75], [-10.5, 8.54], [-10.0, 8.75], [-9.75, 8.65], [-9.5, 8.75], [-8.97, 8.53], [-8.82, 8.18], [-8.47, 8.03], [-8.32, 7.68], [-8.25, 7.65], [-8.18, 7.68], [-8.03, 8.03], [-7.5, 8.25], [-7.25, 8.15], [-7.0, 8.25], [-6.47, 8.03], [-6.25, 7.5], [-6.35, 7.25], [-6.25, 7.0], [-6.47, 6.47], [-7.0, 6.25], [-7.25, 6.35], [-7.32, 6.32], [-7.35, 6.25], [-7.25, 6.0], [-7.47, 5.47], [-8.0, 5.25], [-8.5, 5.46], [-9.0, 5.25], [-9.25, 5.35], [-9.5, 5.25], [-10.03, 5.47], [-10.18, 5.82], [-10.25, 5.85], [-10.5, 5.75], [-11.03, 5.97], [-11.25, 6.5], [-11.15, 6.75], [-11.25, 7.0], [-11.15, 7.25], [-11.18, 7.32], [-11.25, 7.35], [-11.5, 7.25], [-12.03, 7.47]]]]}, "2014-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.03, 7.47], [-12.25, 8.0], [-12.03, 8.53], [-11.5, 8.75], [-11.25, 8.65], [-11.0, 8.75], [-10.5, 8.54], [-10.0, 8.75], [-9.75, 8.65], [-9.5, 8.75], [-8.97, 8.53], [-8.82, 8.18], [-8.47, 8.03], [-8.32, 7.68], [-8.25, 7.65], [-8.18, 7.68], [-8.03, 8.03], [-7.5, 8.25], [-7.25, 8.15], [-7.0, 8.25], [-6.47, 8.03], [-6.25, 7.5], [-6.35, 7.25], [-6.25, 7.0], [-6.47, 6.47], [-7.0, 6.25], [-7.25, 6.35], [-7.32, 6.32], [-7.35, 6.25], [-7.25, 6.0], [-7.47, 5.47], [-8.0, 5.25], [-8.5, 5.46], [-9.0, 5.25], [-9.25, 5.35], [-9.5, 5.25], [-10.03, 5.47], [-10.18, 5.82], [-10.25, 5.85], [-10.5, 5.75], [-11.03, 5.97], [-11.25, 6.5], [-11.15, 6.75], [-11.25, 7.0], [-11.15, 7.25], [-11.18, 7.32], [-11.25, 7.35], [-11.5, 7.25], [-12.03, 7.47]]]]}, "2014-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.15, 7.25], [-11.25, 7.5], [-11.03, 8.03], [-10.68, 8.18], [-10.53, 8.53], [-10.0, 8.75], [-9.75, 8.65], [-9.5, 8.75], [-8.97, 8.53], [-8.82, 8.18], [-8.47, 8.03], [-8.32, 7.68], [-8.25, 7.65], [-8.0, 7.75], [-7.47, 7.53], [-7.25, 7.0], [-7.47, 6.47], [-7.82, 6.32], [-7.97, 5.97], [-8.32, 5.82], [-8.47, 5.47], [-9.0, 5.25], [-9.25, 5.35], [-9.5, 5.25], [-10.03, 5.47], [-10.18, 5.82], [-10.25, 5.85], [-10.5, 5.75], [-11.03, 5.97], [-11.25, 6.5], [-11.15, 6.75], [-11.25, 7.0], [-11.15, 7.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.101613304725049}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7873055822948642}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.655597411560848, 25.00064684380186, 25.477460983922413, 24.51536956427873, 24.932052861775617, 24.94487585179536]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.644980505953356, 24.948583172073143, 24.26733172893063, 23.4790264875798, 23.875799306113493, 24.360229652995486]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5349862964041279, -1.1926448324269643, -1.6799707244254696, -2.1489080099383595, -1.7732726008265867, -1.4446881328922185]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5827571798786266, -1.206897944630839, -2.8098025728651805, -3.101613304725049, -2.152105884020159, -1.7912569643017378]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7156980705930496, -1.3545147200034604, -1.4653729347199838, -2.1096556661778885, -1.8306899271293813, -1.6014258871470886]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7588398084446555, -1.3849445208214861, -1.8125715738237584, -2.952416867907788, -2.239676496855624, -1.9176720919777979]}}