{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:46.701847", "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-Jul-15_to_2016-Jul-21_10.5_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": 2016070000554}, "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 15 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 21 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 457301.6809099904}, "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": ["Chad", "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": 10.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "10.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 2.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 14.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.47, 15.53], [12.82, 15.68], [12.97, 16.03], [13.5, 16.25], [13.75, 16.15], [14.0, 16.25], [14.25, 16.15], [14.5, 16.25], [15.03, 16.03], [15.25, 15.5], [15.03, 14.97], [14.5, 14.75], [14.25, 14.85], [14.18, 14.82], [14.03, 14.47], [13.68, 14.32], [13.53, 13.97], [13.0, 13.75], [12.47, 13.97], [12.25, 14.5], [12.35, 14.75], [12.25, 15.0], [12.47, 15.53]]]]}, "2016-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.97, 13.97], [4.75, 14.5], [4.97, 15.03], [5.5, 15.25], [5.75, 15.15], [5.82, 15.18], [5.85, 15.25], [5.75, 15.5], [5.85, 15.75], [5.75, 16.0], [5.85, 16.25], [5.75, 16.5], [5.97, 17.03], [6.5, 17.25], [6.75, 17.15], [7.0, 17.25], [7.25, 17.15], [7.5, 17.25], [7.75, 17.15], [8.0, 17.25], [8.25, 17.15], [8.5, 17.25], [8.75, 17.15], [8.82, 17.18], [8.97, 17.53], [9.32, 17.68], [9.47, 18.03], [10.0, 18.25], [10.25, 18.15], [10.5, 18.25], [11.03, 18.03], [11.18, 17.68], [11.25, 17.65], [11.5, 17.75], [12.03, 17.53], [12.18, 17.18], [12.25, 17.15], [12.5, 17.25], [13.03, 17.03], [13.25, 16.5], [13.13, 16.2], [13.25, 16.15], [13.5, 16.25], [13.75, 16.15], [14.0, 16.25], [14.25, 16.15], [14.5, 16.25], [15.03, 16.03], [15.25, 15.5], [15.03, 14.97], [14.5, 14.75], [14.25, 14.85], [14.18, 14.82], [14.03, 14.47], [13.68, 14.32], [13.53, 13.97], [13.18, 13.82], [13.03, 13.47], [12.5, 13.25], [12.25, 13.35], [12.0, 13.25], [11.75, 13.35], [11.5, 13.25], [10.97, 13.47], [10.82, 13.82], [10.75, 13.85], [10.68, 13.82], [10.53, 13.47], [10.18, 13.32], [10.03, 12.97], [9.5, 12.75], [9.25, 12.85], [9.0, 12.75], [8.47, 12.97], [8.32, 13.32], [7.97, 13.47], [7.82, 13.82], [7.47, 13.97], [7.32, 14.32], [7.25, 14.35], [7.0, 14.25], [6.75, 14.35], [6.68, 14.32], [6.53, 13.97], [6.0, 13.75], [5.75, 13.85], [5.5, 13.75], [4.97, 13.97]]]]}, "2016-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.25, 15.5], [2.47, 16.03], [2.82, 16.18], [2.85, 16.25], [2.75, 16.5], [2.85, 16.75], [2.82, 16.82], [2.47, 16.97], [2.25, 17.5], [2.47, 18.03], [3.0, 18.25], [3.25, 18.15], [3.5, 18.25], [4.03, 18.03], [4.18, 17.68], [4.5, 17.54], [4.82, 17.68], [4.97, 18.03], [5.38, 18.2], [5.32, 18.32], [4.97, 18.47], [4.75, 19.0], [4.97, 19.53], [5.32, 19.68], [5.47, 20.03], [6.0, 20.25], [6.5, 20.04], [7.0, 20.25], [7.25, 20.15], [7.5, 20.25], [8.03, 20.03], [8.2, 19.63], [8.5, 19.75], [9.03, 19.53], [9.25, 19.0], [9.03, 18.47], [8.68, 18.32], [8.65, 18.25], [8.75, 18.0], [8.65, 17.75], [8.75, 17.5], [8.65, 17.25], [8.68, 17.18], [8.75, 17.15], [8.82, 17.18], [8.97, 17.53], [9.32, 17.68], [9.47, 18.03], [10.0, 18.25], [10.25, 18.15], [10.5, 18.25], [11.03, 18.03], [11.18, 17.68], [11.25, 17.65], [11.5, 17.75], [12.03, 17.53], [12.18, 17.18], [12.25, 17.15], [12.5, 17.25], [13.03, 17.03], [13.25, 16.5], [13.13, 16.2], [13.25, 16.15], [13.5, 16.25], [13.75, 16.15], [14.0, 16.25], [14.25, 16.15], [14.5, 16.25], [15.03, 16.03], [15.25, 15.5], [15.03, 14.97], [14.5, 14.75], [14.25, 14.85], [14.18, 14.82], [14.03, 14.47], [13.68, 14.32], [13.53, 13.97], [13.18, 13.82], [13.03, 13.47], [12.5, 13.25], [12.25, 13.35], [12.0, 13.25], [11.75, 13.35], [11.5, 13.25], [10.97, 13.47], [10.82, 13.82], [10.75, 13.85], [10.68, 13.82], [10.53, 13.47], [10.18, 13.32], [10.03, 12.97], [9.5, 12.75], [9.25, 12.85], [9.0, 12.75], [8.47, 12.97], [8.32, 13.32], [7.97, 13.47], [7.82, 13.82], [7.47, 13.97], [7.32, 14.32], [7.25, 14.35], [7.0, 14.25], [6.75, 14.35], [6.68, 14.32], [6.53, 13.97], [6.0, 13.75], [5.75, 13.85], [5.5, 13.75], [4.97, 13.97], [4.82, 14.32], [4.75, 14.35], [4.68, 14.32], [4.53, 13.97], [4.0, 13.75], [3.75, 13.85], [3.5, 13.75], [3.0, 13.96], [2.5, 13.75], [1.97, 13.97], [1.75, 14.5], [1.97, 15.03], [2.32, 15.18], [2.35, 15.25], [2.25, 15.5]]]]}, "2016-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.32, 15.32], [1.97, 15.47], [1.75, 16.0], [1.97, 16.53], [2.5, 16.75], [2.75, 16.65], [2.82, 16.68], [2.85, 16.75], [2.82, 16.82], [2.47, 16.97], [2.25, 17.5], [2.47, 18.03], [3.0, 18.25], [3.25, 18.15], [3.5, 18.25], [4.03, 18.03], [4.18, 17.68], [4.5, 17.54], [4.82, 17.68], [4.97, 18.03], [5.38, 18.2], [5.32, 18.32], [4.97, 18.47], [4.75, 19.0], [4.97, 19.53], [5.32, 19.68], [5.47, 20.03], [6.0, 20.25], [6.5, 20.04], [7.0, 20.25], [7.25, 20.15], [7.5, 20.25], [8.03, 20.03], [8.2, 19.63], [8.5, 19.75], [9.03, 19.53], [9.25, 19.0], [9.03, 18.47], [8.68, 18.32], [8.65, 18.25], [8.75, 18.0], [8.65, 17.75], [8.75, 17.5], [8.65, 17.25], [8.68, 17.18], [8.75, 17.15], [8.82, 17.18], [8.97, 17.53], [9.32, 17.68], [9.47, 18.03], [10.0, 18.25], [10.25, 18.15], [10.5, 18.25], [11.03, 18.03], [11.18, 17.68], [11.25, 17.65], [11.5, 17.75], [12.03, 17.53], [12.18, 17.18], [12.25, 17.15], [12.5, 17.25], [13.0, 17.04], [13.5, 17.25], [13.75, 17.15], [14.0, 17.25], [14.53, 17.03], [14.68, 16.68], [15.03, 16.53], [15.25, 16.0], [15.15, 15.75], [15.25, 15.5], [15.03, 14.97], [14.5, 14.75], [14.25, 14.85], [14.18, 14.82], [14.03, 14.47], [13.68, 14.32], [13.53, 13.97], [13.18, 13.82], [13.03, 13.47], [12.5, 13.25], [12.25, 13.35], [12.0, 13.25], [11.75, 13.35], [11.5, 13.25], [10.97, 13.47], [10.82, 13.82], [10.75, 13.85], [10.68, 13.82], [10.53, 13.47], [10.18, 13.32], [10.03, 12.97], [9.5, 12.75], [9.25, 12.85], [9.0, 12.75], [8.47, 12.97], [8.32, 13.32], [7.97, 13.47], [7.82, 13.82], [7.47, 13.97], [7.32, 14.32], [7.25, 14.35], [7.0, 14.25], [6.75, 14.35], [6.68, 14.32], [6.53, 13.97], [6.0, 13.75], [5.75, 13.85], [5.5, 13.75], [4.97, 13.97], [4.82, 14.32], [4.75, 14.35], [4.68, 14.32], [4.53, 13.97], [4.0, 13.75], [3.75, 13.85], [3.5, 13.75], [3.0, 13.96], [2.5, 13.75], [1.97, 13.97], [1.75, 14.5], [1.97, 15.03], [2.32, 15.18], [2.35, 15.25], [2.32, 15.32]]]]}, "2016-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.32, 15.32], [1.97, 15.47], [1.75, 16.0], [1.97, 16.53], [2.5, 16.75], [2.75, 16.65], [2.82, 16.68], [2.85, 16.75], [2.82, 16.82], [2.47, 16.97], [2.25, 17.5], [2.47, 18.03], [3.0, 18.25], [3.25, 18.15], [3.5, 18.25], [4.03, 18.03], [4.18, 17.68], [4.5, 17.54], [4.82, 17.68], [4.97, 18.03], [5.38, 18.2], [5.32, 18.32], [4.97, 18.47], [4.75, 19.0], [4.97, 19.53], [5.32, 19.68], [5.47, 20.03], [6.0, 20.25], [6.5, 20.04], [7.0, 20.25], [7.25, 20.15], [7.5, 20.25], [8.03, 20.03], [8.2, 19.63], [8.5, 19.75], [9.03, 19.53], [9.25, 19.0], [9.03, 18.47], [8.68, 18.32], [8.65, 18.25], [8.75, 18.0], [8.65, 17.75], [8.75, 17.5], [8.65, 17.25], [8.75, 17.0], [8.97, 17.53], [9.5, 17.75], [10.03, 17.53], [10.18, 17.18], [10.25, 17.15], [10.5, 17.25], [10.75, 17.15], [11.0, 17.25], [11.5, 17.04], [12.0, 17.25], [12.25, 17.15], [12.5, 17.25], [13.0, 17.04], [13.5, 17.25], [13.75, 17.15], [14.0, 17.25], [14.53, 17.03], [14.68, 16.68], [15.03, 16.53], [15.25, 16.0], [15.15, 15.75], [15.25, 15.5], [15.03, 14.97], [14.5, 14.75], [14.25, 14.85], [14.18, 14.82], [14.03, 14.47], [13.68, 14.32], [13.53, 13.97], [13.18, 13.82], [13.03, 13.47], [12.5, 13.25], [12.25, 13.35], [12.0, 13.25], [11.47, 13.47], [11.32, 13.82], [10.97, 13.97], [10.82, 14.32], [10.75, 14.35], [10.5, 14.25], [9.97, 14.47], [9.82, 14.82], [9.47, 14.97], [9.32, 15.32], [9.25, 15.35], [9.0, 15.25], [8.75, 15.35], [8.5, 15.25], [7.97, 15.47], [7.8, 15.88], [7.5, 15.75], [7.25, 15.85], [7.18, 15.82], [7.15, 15.75], [7.18, 15.68], [7.53, 15.53], [7.75, 15.0], [7.53, 14.47], [7.0, 14.25], [6.75, 14.35], [6.68, 14.32], [6.53, 13.97], [6.0, 13.75], [5.75, 13.85], [5.5, 13.75], [4.97, 13.97], [4.82, 14.32], [4.75, 14.35], [4.68, 14.32], [4.53, 13.97], [4.0, 13.75], [3.75, 13.85], [3.5, 13.75], [3.0, 13.96], [2.5, 13.75], [1.97, 13.97], [1.75, 14.5], [1.97, 15.03], [2.32, 15.18], [2.35, 15.25], [2.32, 15.32]], [[8.63, 16.7], [8.75, 16.65], [8.82, 16.68], [8.85, 16.75], [8.75, 17.0], [8.63, 16.7]]]]}, "2016-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.0, 16.25], [5.53, 16.03], [5.68, 15.68], [6.03, 15.53], [6.25, 15.0], [6.03, 14.47], [5.5, 14.25], [5.25, 14.35], [5.0, 14.25], [4.47, 14.47], [4.25, 15.0], [4.35, 15.25], [4.25, 15.5], [4.47, 16.03], [5.0, 16.25]]], [[[11.18, 16.68], [11.53, 16.53], [11.7, 16.13], [12.0, 16.25], [12.25, 16.15], [12.32, 16.18], [12.47, 16.53], [12.82, 16.68], [12.97, 17.03], [13.5, 17.25], [13.75, 17.15], [14.0, 17.25], [14.53, 17.03], [14.68, 16.68], [15.03, 16.53], [15.25, 16.0], [15.03, 15.47], [14.5, 15.25], [14.25, 15.35], [14.13, 15.3], [14.25, 15.0], [14.03, 14.47], [13.5, 14.25], [13.25, 14.35], [13.0, 14.25], [12.47, 14.47], [12.32, 14.82], [12.25, 14.85], [12.0, 14.75], [11.47, 14.97], [11.3, 15.38], [11.0, 15.25], [10.75, 15.35], [10.5, 15.25], [10.25, 15.35], [10.0, 15.25], [9.47, 15.47], [9.25, 16.0], [9.47, 16.53], [9.82, 16.68], [9.97, 17.03], [10.5, 17.25], [11.03, 17.03], [11.18, 16.68]]], [[[1.97, 16.53], [2.5, 16.75], [2.75, 16.65], [2.82, 16.68], [2.97, 17.03], [3.5, 17.25], [4.03, 17.03], [4.25, 16.5], [4.15, 16.25], [4.25, 16.0], [4.03, 15.47], [3.5, 15.25], [3.25, 15.35], [3.0, 15.25], [2.75, 15.35], [2.5, 15.25], [1.97, 15.47], [1.75, 16.0], [1.97, 16.53]]]]}, "2016-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 15.47], [1.75, 16.0], [1.97, 16.53], [2.5, 16.75], [2.75, 16.65], [2.82, 16.68], [2.97, 17.03], [3.5, 17.25], [4.03, 17.03], [4.25, 16.5], [4.15, 16.25], [4.25, 16.0], [4.03, 15.47], [3.5, 15.25], [3.25, 15.35], [3.0, 15.25], [2.75, 15.35], [2.5, 15.25], [1.97, 15.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.919012927574784}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.5868016796446853}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.081099250222735, 27.949875809883565, 27.794021064030687, 27.419791987734584, 28.861411258827786, 28.91931078736775, 29.19890225139801]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.57084857886599, 25.145927993501857, 24.489381477001302, 25.062128010942615, 25.97738360138851, 27.46394089849025, 28.72060067751636]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7260546272611443, -3.151674503305911, -3.922360475507873, -4.143426615611887, -3.008671951778897, -2.5466846210418, -2.9328246020988757]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.1502803094948604, -4.724494338950308, -5.633620432747421, -5.919012927574784, -4.352316263288003, -3.078985990070578, -3.1549316549948685]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7909376697132888, -2.061841042514748, -2.545313838954299, -2.6339081932907145, -1.8399717392270822, -1.4988250169512753, -1.5787919735547324]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.083418754247626, -2.852624823926571, -3.6424412772187202, -4.675910095141477, -2.991769816228921, -1.881662299354102, -1.7096188139006627]}}