{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:51.498592", "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": "2013-Jul-16_to_2013-Jul-18_35.0_11.0"}, "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": 2013070000932}, "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 16 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 18 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 66845.26259287438}, "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": ["Ethiopia", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-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": 11.0}, "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": 35.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 33.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, 11.03], [33.82, 11.18], [33.97, 11.53], [34.5, 11.75], [34.75, 11.65], [34.82, 11.68], [34.97, 12.03], [35.5, 12.25], [36.03, 12.03], [36.2, 11.63], [36.32, 11.68], [36.47, 12.03], [37.0, 12.25], [37.25, 12.15], [37.32, 12.18], [37.47, 12.53], [38.0, 12.75], [38.53, 12.53], [38.75, 12.0], [38.53, 11.47], [38.18, 11.32], [38.03, 10.97], [37.68, 10.82], [37.53, 10.47], [37.0, 10.25], [36.75, 10.35], [36.68, 10.32], [36.65, 10.25], [36.75, 10.0], [36.53, 9.47], [36.18, 9.32], [36.03, 8.97], [35.5, 8.75], [35.25, 8.85], [35.0, 8.75], [34.75, 8.85], [34.5, 8.75], [33.97, 8.97], [33.82, 9.32], [33.47, 9.47], [33.25, 10.0], [33.35, 10.25], [33.25, 10.5], [33.47, 11.03]]]]}, "2013-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, 11.03], [33.82, 11.18], [33.97, 11.53], [34.5, 11.75], [34.75, 11.65], [34.82, 11.68], [34.97, 12.03], [35.5, 12.25], [36.03, 12.03], [36.2, 11.63], [36.32, 11.68], [36.47, 12.03], [37.0, 12.25], [37.25, 12.15], [37.32, 12.18], [37.47, 12.53], [38.0, 12.75], [38.53, 12.53], [38.75, 12.0], [38.53, 11.47], [38.18, 11.32], [38.03, 10.97], [37.68, 10.82], [37.53, 10.47], [37.0, 10.25], [36.75, 10.35], [36.68, 10.32], [36.65, 10.25], [36.75, 10.0], [36.53, 9.47], [36.18, 9.32], [36.03, 8.97], [35.5, 8.75], [35.25, 8.85], [35.0, 8.75], [34.75, 8.85], [34.5, 8.75], [33.97, 8.97], [33.82, 9.32], [33.47, 9.47], [33.25, 10.0], [33.35, 10.25], [33.25, 10.5], [33.47, 11.03]]]]}, "2013-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, 11.03], [33.82, 11.18], [33.97, 11.53], [34.5, 11.75], [34.75, 11.65], [34.82, 11.68], [34.97, 12.03], [35.5, 12.25], [36.03, 12.03], [36.2, 11.63], [36.32, 11.68], [36.47, 12.03], [37.0, 12.25], [37.25, 12.15], [37.32, 12.18], [37.47, 12.53], [38.0, 12.75], [38.53, 12.53], [38.75, 12.0], [38.53, 11.47], [38.18, 11.32], [38.03, 10.97], [37.68, 10.82], [37.53, 10.47], [37.0, 10.25], [36.75, 10.35], [36.68, 10.32], [36.65, 10.25], [36.75, 10.0], [36.53, 9.47], [36.18, 9.32], [36.03, 8.97], [35.5, 8.75], [35.25, 8.85], [35.0, 8.75], [34.75, 8.85], [34.5, 8.75], [33.97, 8.97], [33.82, 9.32], [33.47, 9.47], [33.25, 10.0], [33.35, 10.25], [33.25, 10.5], [33.47, 11.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.436690253242034}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7069395214102305}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.556745669031955, 19.649429953086496, 19.14267522433147]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.328422071712623, 13.799967533352003, 13.609317765970275]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6105883245399701, -1.5153494326916102, -1.994880806999111]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.397382090177075, -2.1746916186960448, -3.436690253242034]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6865023909611923, -1.6365524458631648, -2.14483689798216]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1675134483419285, -2.3897465447590425, -3.0759471671412215]}}