{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:37.323813", "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-Jun-26_to_2013-Jun-30_1.5_14.0"}, "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": 2013060001092}, "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": "June 26 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 30 2013"}, "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": 90205.16892108088}, "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": ["Benin", "Burkina Faso", "Niger"]}, "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": 14.0}, "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": 1.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "1.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 0.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 4.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.75}, "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": {"2013-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.0, 15.75], [2.53, 15.53], [2.75, 15.0], [2.53, 14.47], [2.0, 14.25], [1.47, 14.47], [1.25, 15.0], [1.47, 15.53], [2.0, 15.75]]]]}, "2013-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 14.53], [0.82, 14.68], [0.97, 15.03], [1.32, 15.18], [1.47, 15.53], [2.0, 15.75], [2.53, 15.53], [2.68, 15.18], [2.75, 15.15], [3.0, 15.25], [3.53, 15.03], [3.75, 14.5], [3.65, 14.25], [3.68, 14.18], [3.75, 14.15], [4.0, 14.25], [4.53, 14.03], [4.75, 13.5], [4.65, 13.25], [4.75, 13.0], [4.53, 12.47], [4.0, 12.25], [3.75, 12.35], [3.68, 12.32], [3.65, 12.25], [3.75, 12.0], [3.53, 11.47], [3.0, 11.25], [2.75, 11.35], [2.5, 11.25], [2.25, 11.35], [2.0, 11.25], [1.47, 11.47], [1.32, 11.82], [0.97, 11.97], [0.75, 12.5], [0.85, 12.75], [0.82, 12.82], [0.47, 12.97], [0.25, 13.5], [0.35, 13.75], [0.25, 14.0], [0.47, 14.53]]]]}, "2013-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 14.53], [0.82, 14.68], [0.97, 15.03], [1.32, 15.18], [1.47, 15.53], [2.0, 15.75], [2.53, 15.53], [2.68, 15.18], [2.75, 15.15], [3.0, 15.25], [3.53, 15.03], [3.75, 14.5], [3.65, 14.25], [3.68, 14.18], [3.75, 14.15], [4.0, 14.25], [4.53, 14.03], [4.75, 13.5], [4.65, 13.25], [4.75, 13.0], [4.53, 12.47], [4.0, 12.25], [3.75, 12.35], [3.68, 12.32], [3.65, 12.25], [3.75, 12.0], [3.53, 11.47], [3.0, 11.25], [2.75, 11.35], [2.5, 11.25], [2.25, 11.35], [2.0, 11.25], [1.47, 11.47], [1.32, 11.82], [0.97, 11.97], [0.75, 12.5], [0.85, 12.75], [0.82, 12.82], [0.47, 12.97], [0.25, 13.5], [0.35, 13.75], [0.25, 14.0], [0.47, 14.53]]]]}, "2013-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 14.53], [0.82, 14.68], [0.97, 15.03], [1.5, 15.25], [1.75, 15.15], [2.0, 15.25], [2.25, 15.15], [2.5, 15.25], [2.75, 15.15], [3.0, 15.25], [3.53, 15.03], [3.75, 14.5], [3.65, 14.25], [3.68, 14.18], [3.75, 14.15], [4.0, 14.25], [4.53, 14.03], [4.75, 13.5], [4.65, 13.25], [4.75, 13.0], [4.53, 12.47], [4.0, 12.25], [3.75, 12.35], [3.68, 12.32], [3.65, 12.25], [3.75, 12.0], [3.53, 11.47], [3.0, 11.25], [2.75, 11.35], [2.5, 11.25], [2.25, 11.35], [2.0, 11.25], [1.47, 11.47], [1.32, 11.82], [0.97, 11.97], [0.75, 12.5], [0.85, 12.75], [0.82, 12.82], [0.47, 12.97], [0.25, 13.5], [0.35, 13.75], [0.25, 14.0], [0.47, 14.53]]]]}, "2013-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.75, 12.5], [0.97, 13.03], [1.37, 13.2], [1.32, 13.32], [0.97, 13.47], [0.75, 14.0], [0.97, 14.53], [1.5, 14.75], [1.75, 14.65], [1.82, 14.68], [1.97, 15.03], [2.5, 15.25], [3.03, 15.03], [3.25, 14.5], [3.15, 14.25], [3.18, 14.18], [3.53, 14.03], [3.75, 13.5], [3.65, 13.25], [3.75, 13.0], [3.54, 12.5], [3.75, 12.0], [3.53, 11.47], [3.0, 11.25], [2.75, 11.35], [2.5, 11.25], [2.25, 11.35], [2.0, 11.25], [1.47, 11.47], [1.32, 11.82], [0.97, 11.97], [0.75, 12.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.438864441885812}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.353702178178661}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.73821117281267, 25.90360035162098, 27.956698694124213, 27.857683606646503, 28.050165120736153]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.73821117281267, 24.282338065127647, 26.716267309291254, 25.300721490806325, 26.08504578451351]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.5498374258145304, -5.001330330564332, -2.8516829351420445, -2.748818341037081, -2.209218517392827]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5498374258145304, -6.438864441885812, -4.0831677598051215, -3.4915330039114565, -2.4703462239138503]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3691131054381722, -3.055093414174235, -1.741718296706797, -1.7231015624766686, -1.4580571031889102]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3691131054381722, -3.8205319326567415, -2.33992002686278, -2.2590611819376463, -1.7291273788312207]}}