{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:18.911943", "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-Apr-24_to_2014-May-03_11.5_17.5"}, "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": 2014040002400}, "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": "April 24 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 330379.5574318181}, "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", "Niger"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 17.5}, "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": 11.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "11.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 8.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.75, 16.5], [9.97, 17.03], [10.32, 17.18], [10.47, 17.53], [10.82, 17.68], [10.85, 17.75], [10.75, 18.0], [10.97, 18.53], [11.5, 18.75], [11.75, 18.65], [12.0, 18.75], [12.25, 18.65], [12.5, 18.75], [13.03, 18.53], [13.25, 18.0], [13.15, 17.75], [13.25, 17.5], [13.15, 17.25], [13.25, 17.0], [13.03, 16.47], [12.68, 16.32], [12.53, 15.97], [12.18, 15.82], [12.03, 15.47], [11.5, 15.25], [11.25, 15.35], [11.0, 15.25], [10.75, 15.35], [10.68, 15.32], [10.53, 14.97], [10.0, 14.75], [9.47, 14.97], [9.25, 15.5], [9.47, 16.03], [9.82, 16.18], [9.85, 16.25], [9.75, 16.5]]]]}, "2014-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.97, 17.03], [10.32, 17.18], [10.47, 17.53], [10.82, 17.68], [10.85, 17.75], [10.75, 18.0], [10.97, 18.53], [11.32, 18.68], [11.47, 19.03], [12.0, 19.25], [12.25, 19.15], [12.5, 19.25], [13.03, 19.03], [13.25, 18.5], [13.15, 18.25], [13.25, 18.0], [13.15, 17.75], [13.25, 17.5], [13.15, 17.25], [13.25, 17.0], [13.03, 16.47], [12.68, 16.32], [12.53, 15.97], [12.18, 15.82], [12.03, 15.47], [11.5, 15.25], [11.25, 15.35], [11.0, 15.25], [10.75, 15.35], [10.68, 15.32], [10.53, 14.97], [10.0, 14.75], [9.47, 14.97], [9.25, 15.5], [9.47, 16.03], [9.82, 16.18], [9.85, 16.25], [9.75, 16.5], [9.97, 17.03]]], [[[8.47, 17.47], [8.25, 18.0], [8.47, 18.53], [9.0, 18.75], [9.53, 18.53], [9.75, 18.0], [9.53, 17.47], [9.0, 17.25], [8.47, 17.47]]]]}, "2014-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.97, 19.53], [9.5, 19.75], [10.03, 19.53], [10.18, 19.18], [10.5, 19.04], [11.0, 19.25], [11.5, 19.04], [12.0, 19.25], [12.25, 19.15], [12.5, 19.25], [13.03, 19.03], [13.25, 18.5], [13.15, 18.25], [13.25, 18.0], [13.15, 17.75], [13.25, 17.5], [13.15, 17.25], [13.25, 17.0], [13.03, 16.47], [12.68, 16.32], [12.53, 15.97], [12.18, 15.82], [12.03, 15.47], [11.5, 15.25], [11.25, 15.35], [11.0, 15.25], [10.75, 15.35], [10.68, 15.32], [10.53, 14.97], [10.0, 14.75], [9.47, 14.97], [9.25, 15.5], [9.47, 16.03], [9.82, 16.18], [9.85, 16.25], [9.75, 16.5], [9.88, 16.8], [9.47, 16.97], [9.32, 17.32], [9.25, 17.35], [9.0, 17.25], [8.47, 17.47], [8.25, 18.0], [8.47, 18.53], [8.88, 18.7], [8.75, 19.0], [8.97, 19.53]]]]}, "2014-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.97, 19.53], [9.5, 19.75], [10.0, 19.54], [10.5, 19.75], [10.75, 19.65], [11.0, 19.75], [11.53, 19.53], [11.7, 19.13], [12.0, 19.25], [12.25, 19.15], [12.5, 19.25], [13.03, 19.03], [13.25, 18.5], [13.15, 18.25], [13.25, 18.0], [13.15, 17.75], [13.25, 17.5], [13.03, 16.97], [12.68, 16.82], [12.65, 16.75], [12.75, 16.5], [12.53, 15.97], [12.0, 15.75], [11.75, 15.85], [11.5, 15.75], [10.97, 15.97], [10.75, 16.5], [10.85, 16.75], [10.75, 17.0], [10.85, 17.25], [10.8, 17.38], [10.68, 17.32], [10.53, 16.97], [10.0, 16.75], [9.47, 16.97], [9.32, 17.32], [9.25, 17.35], [9.0, 17.25], [8.47, 17.47], [8.25, 18.0], [8.47, 18.53], [8.88, 18.7], [8.75, 19.0], [8.97, 19.53]]]]}, "2014-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.25, 15.5], [10.47, 16.03], [11.0, 16.25], [11.53, 16.03], [11.75, 15.5], [11.53, 14.97], [11.0, 14.75], [10.47, 14.97], [10.25, 15.5]]], [[[14.25, 17.5], [14.47, 18.03], [15.0, 18.25], [15.53, 18.03], [15.75, 17.5], [15.53, 16.97], [15.0, 16.75], [14.47, 16.97], [14.25, 17.5]]], [[[10.0, 19.54], [10.5, 19.75], [10.75, 19.65], [11.0, 19.75], [11.53, 19.53], [11.75, 19.0], [11.65, 18.75], [11.75, 18.5], [11.53, 17.97], [11.18, 17.82], [11.03, 17.47], [10.68, 17.32], [10.53, 16.97], [10.0, 16.75], [9.47, 16.97], [9.32, 17.32], [8.97, 17.47], [8.75, 18.0], [8.96, 18.5], [8.75, 19.0], [8.97, 19.53], [9.5, 19.75], [10.0, 19.54]]], [[[12.97, 19.53], [13.5, 19.75], [13.75, 19.65], [14.0, 19.75], [14.43, 19.57], [14.25, 20.0], [14.47, 20.53], [15.0, 20.75], [15.53, 20.53], [15.75, 20.0], [15.53, 19.47], [15.0, 19.25], [14.57, 19.43], [14.75, 19.0], [14.53, 18.47], [14.0, 18.25], [13.75, 18.35], [13.5, 18.25], [12.97, 18.47], [12.75, 19.0], [12.97, 19.53]]]]}, "2014-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.97, 20.53], [9.5, 20.75], [9.75, 20.65], [9.82, 20.68], [9.97, 21.03], [10.32, 21.18], [10.35, 21.25], [10.25, 21.5], [10.47, 22.03], [10.82, 22.18], [10.97, 22.53], [11.5, 22.75], [12.03, 22.53], [12.18, 22.18], [12.53, 22.03], [12.7, 21.63], [13.0, 21.75], [13.25, 21.65], [13.5, 21.75], [13.75, 21.65], [14.0, 21.75], [14.53, 21.53], [14.68, 21.18], [14.75, 21.15], [14.82, 21.18], [14.85, 21.25], [14.75, 21.5], [14.97, 22.03], [15.5, 22.25], [16.03, 22.03], [16.18, 21.68], [16.53, 21.53], [16.75, 21.0], [16.65, 20.75], [16.75, 20.5], [16.53, 19.97], [16.0, 19.75], [15.75, 19.85], [15.68, 19.82], [15.65, 19.75], [15.75, 19.5], [15.54, 19.0], [15.75, 18.5], [15.54, 18.0], [15.75, 17.5], [15.53, 16.97], [15.0, 16.75], [14.75, 16.85], [14.5, 16.75], [14.25, 16.85], [14.0, 16.75], [13.75, 16.85], [13.5, 16.75], [13.2, 16.88], [13.15, 16.75], [13.25, 16.5], [13.15, 16.25], [13.25, 16.0], [13.03, 15.47], [12.5, 15.25], [11.97, 15.47], [11.82, 15.82], [11.7, 15.88], [11.65, 15.75], [11.75, 15.5], [11.53, 14.97], [11.0, 14.75], [10.47, 14.97], [10.32, 15.32], [9.97, 15.47], [9.75, 16.0], [9.97, 16.53], [10.38, 16.7], [10.25, 17.0], [10.35, 17.25], [10.32, 17.32], [9.97, 17.47], [9.75, 18.0], [9.88, 18.3], [9.47, 18.47], [9.32, 18.82], [8.97, 18.97], [8.75, 19.5], [8.85, 19.75], [8.75, 20.0], [8.97, 20.53]], [[12.0, 18.25], [11.75, 18.35], [11.68, 18.32], [11.63, 18.2], [11.75, 18.15], [12.0, 18.25]], [[12.3, 18.13], [12.35, 18.25], [12.3, 18.38], [12.0, 18.25], [12.3, 18.13]]]]}, "2014-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.97, 20.53], [9.5, 20.75], [9.75, 20.65], [9.82, 20.68], [9.97, 21.03], [10.32, 21.18], [10.35, 21.25], [10.25, 21.5], [10.47, 22.03], [10.82, 22.18], [10.97, 22.53], [11.5, 22.75], [12.03, 22.53], [12.18, 22.18], [12.53, 22.03], [12.7, 21.63], [13.0, 21.75], [13.25, 21.65], [13.5, 21.75], [13.75, 21.65], [14.0, 21.75], [14.25, 21.65], [14.5, 21.75], [14.75, 21.65], [14.82, 21.68], [14.97, 22.03], [15.5, 22.25], [16.03, 22.03], [16.18, 21.68], [16.53, 21.53], [16.75, 21.0], [16.65, 20.75], [16.75, 20.5], [16.54, 20.0], [16.75, 19.5], [16.53, 18.97], [16.18, 18.82], [16.03, 18.47], [15.68, 18.32], [15.54, 18.0], [15.75, 17.5], [15.53, 16.97], [15.0, 16.75], [14.75, 16.85], [14.5, 16.75], [14.25, 16.85], [14.0, 16.75], [13.75, 16.85], [13.5, 16.75], [13.2, 16.88], [13.15, 16.75], [13.25, 16.5], [13.15, 16.25], [13.25, 16.0], [13.15, 15.75], [13.25, 15.5], [13.03, 14.97], [12.5, 14.75], [12.25, 14.85], [12.0, 14.75], [11.75, 14.85], [11.5, 14.75], [11.25, 14.85], [11.0, 14.75], [10.47, 14.97], [10.32, 15.32], [9.97, 15.47], [9.75, 16.0], [9.85, 16.25], [9.75, 16.5], [9.85, 16.75], [9.82, 16.82], [9.47, 16.97], [9.25, 17.5], [9.35, 17.75], [9.25, 18.0], [9.35, 18.25], [9.25, 18.5], [9.35, 18.75], [9.32, 18.82], [8.97, 18.97], [8.75, 19.5], [8.85, 19.75], [8.75, 20.0], [8.97, 20.53]]]]}, "2014-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.97, 20.53], [9.5, 20.75], [9.75, 20.65], [9.82, 20.68], [9.97, 21.03], [10.32, 21.18], [10.35, 21.25], [10.25, 21.5], [10.47, 22.03], [10.82, 22.18], [10.97, 22.53], [11.5, 22.75], [12.03, 22.53], [12.18, 22.18], [12.53, 22.03], [12.7, 21.63], [13.0, 21.75], [13.25, 21.65], [13.5, 21.75], [13.75, 21.65], [14.0, 21.75], [14.25, 21.65], [14.5, 21.75], [14.75, 21.65], [14.82, 21.68], [14.97, 22.03], [15.5, 22.25], [16.03, 22.03], [16.18, 21.68], [16.53, 21.53], [16.75, 21.0], [16.65, 20.75], [16.75, 20.5], [16.54, 20.0], [16.75, 19.5], [16.53, 18.97], [16.18, 18.82], [16.03, 18.47], [15.68, 18.32], [15.54, 18.0], [15.75, 17.5], [15.53, 16.97], [15.0, 16.75], [14.75, 16.85], [14.5, 16.75], [14.25, 16.85], [14.0, 16.75], [13.75, 16.85], [13.5, 16.75], [13.2, 16.88], [13.15, 16.75], [13.25, 16.5], [13.15, 16.25], [13.25, 16.0], [13.15, 15.75], [13.25, 15.5], [13.03, 14.97], [12.5, 14.75], [12.25, 14.85], [12.0, 14.75], [11.75, 14.85], [11.5, 14.75], [10.97, 14.97], [10.82, 15.32], [10.75, 15.35], [10.5, 15.25], [9.97, 15.47], [9.75, 16.0], [9.85, 16.25], [9.75, 16.5], [9.85, 16.75], [9.82, 16.82], [9.47, 16.97], [9.25, 17.5], [9.35, 17.75], [9.25, 18.0], [9.35, 18.25], [9.25, 18.5], [9.35, 18.75], [9.32, 18.82], [8.97, 18.97], [8.75, 19.5], [8.85, 19.75], [8.75, 20.0], [8.97, 20.53]]]]}, "2014-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.97, 20.53], [9.5, 20.75], [9.75, 20.65], [9.82, 20.68], [9.97, 21.03], [10.32, 21.18], [10.35, 21.25], [10.25, 21.5], [10.47, 22.03], [10.82, 22.18], [10.97, 22.53], [11.5, 22.75], [12.03, 22.53], [12.18, 22.18], [12.53, 22.03], [12.7, 21.63], [13.0, 21.75], [13.25, 21.65], [13.5, 21.75], [13.75, 21.65], [14.0, 21.75], [14.25, 21.65], [14.5, 21.75], [14.75, 21.65], [14.82, 21.68], [14.97, 22.03], [15.5, 22.25], [16.03, 22.03], [16.25, 21.5], [16.04, 21.0], [16.25, 20.5], [16.15, 20.25], [16.18, 20.18], [16.53, 20.03], [16.75, 19.5], [16.53, 18.97], [16.18, 18.82], [16.03, 18.47], [15.5, 18.25], [15.0, 18.46], [14.5, 18.25], [14.25, 18.35], [14.0, 18.25], [13.75, 18.35], [13.68, 18.32], [13.65, 18.25], [13.75, 18.0], [13.53, 17.47], [13.18, 17.32], [13.15, 17.25], [13.25, 17.0], [13.03, 16.47], [12.68, 16.32], [12.65, 16.25], [12.68, 16.18], [13.03, 16.03], [13.25, 15.5], [13.03, 14.97], [12.5, 14.75], [12.25, 14.85], [12.0, 14.75], [11.75, 14.85], [11.5, 14.75], [10.97, 14.97], [10.75, 15.5], [10.88, 15.8], [10.75, 15.85], [10.5, 15.75], [9.97, 15.97], [9.75, 16.5], [9.85, 16.75], [9.82, 16.82], [9.47, 16.97], [9.25, 17.5], [9.35, 17.75], [9.25, 18.0], [9.35, 18.25], [9.25, 18.5], [9.35, 18.75], [9.32, 18.82], [8.97, 18.97], [8.75, 19.5], [8.85, 19.75], [8.75, 20.0], [8.97, 20.53]]]]}, "2014-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.5, 18.25], [10.75, 18.15], [11.0, 18.25], [11.25, 18.15], [11.5, 18.25], [12.03, 18.03], [12.25, 17.5], [12.03, 16.97], [11.68, 16.82], [11.53, 16.47], [11.0, 16.25], [10.75, 16.35], [10.5, 16.25], [9.97, 16.47], [9.75, 17.0], [9.85, 17.25], [9.75, 17.5], [9.97, 18.03], [10.5, 18.25]]], [[[12.75, 19.0], [12.97, 19.53], [13.5, 19.75], [13.75, 19.65], [14.0, 19.75], [14.25, 19.65], [14.5, 19.75], [15.03, 19.53], [15.25, 19.0], [15.03, 18.47], [14.5, 18.25], [14.25, 18.35], [14.0, 18.25], [13.75, 18.35], [13.5, 18.25], [12.97, 18.47], [12.75, 19.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.9901678233682105}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.435023281334555}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.97604411535974, 34.339574155075695, 33.97187050043709, 33.81414903186209, 33.923984679894374, 34.19100789363705, 34.41085597271052, 34.49527143825293, 35.06380294335668, 33.62329742194487]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.72439447576164, 35.97198790821682, 34.855076717905206, 34.805743321167085, 34.65450056027538, 35.47386728888381, 35.93284544789418, 36.216594777104774, 36.99747599016632, 33.99799572835383]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.31122752174721, 3.6716955167017993, 3.29184845096893, 3.224442188102292, 2.9880567286742683, 3.250150336756024, 3.389845440656286, 3.4161414016406297, 3.855981520346196, 2.7459137730747685]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.316888335813928, 4.32048730702337, 4.07199418382902, 4.338181988178178, 3.3971451970539306, 4.416519692709471, 4.452617536591049, 4.428379204757675, 4.9901678233682105, 2.9577804172125752]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4926704957496857, 1.6432925517001973, 1.4064621058318676, 1.3299171392980564, 1.2286596188780232, 1.315075094149729, 1.3753733862959112, 1.3800486772531126, 1.5639873356480654, 1.1966611886107776]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9700455508592536, 2.0004627681370826, 1.766061716909211, 1.56971330184741, 1.3849196489648412, 1.6608144227744475, 1.9479755687509752, 1.7683201775771509, 2.087081003475324, 1.2806819154174909]}}