{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:23.884458", "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": "2016-May-23_to_2016-May-25_2.5_16.0"}, "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": 2016050000611}, "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": "May 23 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 25 2016"}, "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": 95213.67021502592}, "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": ["Mali", "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": 16.0}, "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": 2.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "2.5\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": 4.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 15.53], [0.82, 15.68], [0.85, 15.75], [0.75, 16.0], [0.85, 16.25], [0.75, 16.5], [0.97, 17.03], [1.32, 17.18], [1.47, 17.53], [2.0, 17.75], [2.25, 17.65], [2.5, 17.75], [2.75, 17.65], [3.0, 17.75], [3.53, 17.53], [3.68, 17.18], [3.75, 17.15], [4.0, 17.25], [4.53, 17.03], [4.68, 16.68], [5.03, 16.53], [5.25, 16.0], [5.03, 15.47], [4.68, 15.32], [4.53, 14.97], [4.18, 14.82], [4.03, 14.47], [3.68, 14.32], [3.53, 13.97], [3.18, 13.82], [3.03, 13.47], [2.5, 13.25], [1.97, 13.47], [1.75, 14.0], [1.85, 14.25], [1.82, 14.32], [1.75, 14.35], [1.68, 14.32], [1.53, 13.97], [1.0, 13.75], [0.47, 13.97], [0.25, 14.5], [0.35, 14.75], [0.25, 15.0], [0.47, 15.53]]]]}, "2016-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 15.53], [0.82, 15.68], [0.85, 15.75], [0.75, 16.0], [0.85, 16.25], [0.75, 16.5], [0.97, 17.03], [1.32, 17.18], [1.47, 17.53], [2.0, 17.75], [2.25, 17.65], [2.5, 17.75], [2.75, 17.65], [3.0, 17.75], [3.53, 17.53], [3.68, 17.18], [3.75, 17.15], [4.0, 17.25], [4.53, 17.03], [4.68, 16.68], [5.03, 16.53], [5.25, 16.0], [5.03, 15.47], [4.68, 15.32], [4.53, 14.97], [4.18, 14.82], [4.03, 14.47], [3.68, 14.32], [3.53, 13.97], [3.18, 13.82], [3.03, 13.47], [2.5, 13.25], [1.97, 13.47], [1.75, 14.0], [1.85, 14.25], [1.82, 14.32], [1.75, 14.35], [1.68, 14.32], [1.53, 13.97], [1.0, 13.75], [0.47, 13.97], [0.25, 14.5], [0.35, 14.75], [0.25, 15.0], [0.47, 15.53]]]]}, "2016-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 15.53], [0.82, 15.68], [0.85, 15.75], [0.75, 16.0], [0.85, 16.25], [0.75, 16.5], [0.97, 17.03], [1.32, 17.18], [1.47, 17.53], [2.0, 17.75], [2.25, 17.65], [2.5, 17.75], [2.75, 17.65], [3.0, 17.75], [3.53, 17.53], [3.68, 17.18], [3.75, 17.15], [4.0, 17.25], [4.53, 17.03], [4.68, 16.68], [5.03, 16.53], [5.25, 16.0], [5.03, 15.47], [4.68, 15.32], [4.53, 14.97], [4.18, 14.82], [4.03, 14.47], [3.68, 14.32], [3.53, 13.97], [3.18, 13.82], [3.03, 13.47], [2.5, 13.25], [1.97, 13.47], [1.75, 14.0], [1.85, 14.25], [1.82, 14.32], [1.75, 14.35], [1.68, 14.32], [1.53, 13.97], [1.0, 13.75], [0.47, 13.97], [0.25, 14.5], [0.35, 14.75], [0.25, 15.0], [0.47, 15.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.071460176607786}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.788513000692318}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.295876308969184, 32.33181711916217, 31.85920268755615]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.934531428916387, 31.5379198435449, 30.48702999796234]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0819833941534576, -2.9577345072548127, -3.3258211006686835]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5852095531966484, -3.7459041961153616, -5.071460176607786]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2999172789041369, -1.7432931353279695, -1.855240777308404]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6095968287184232, -2.2025709392871957, -2.6702355777308164]}}