{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:12.430206", "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": "2018-Sep-21_to_2018-Sep-25_7.0_19.0"}, "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": 2018090002525}, "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": "September 21 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 25 2018"}, "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": "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": 82026.42365024009}, "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": ["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": 19.0}, "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": 7.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "7.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 5.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 8.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.25, 18.0], [7.47, 18.53], [7.82, 18.68], [7.97, 19.03], [8.5, 19.25], [9.03, 19.03], [9.25, 18.5], [9.04, 18.0], [9.25, 17.5], [9.03, 16.97], [8.5, 16.75], [7.97, 16.97], [7.82, 17.32], [7.47, 17.47], [7.25, 18.0]]]]}, "2018-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.47, 19.03], [6.0, 19.25], [6.25, 19.15], [6.32, 19.18], [6.47, 19.53], [6.82, 19.68], [6.85, 19.75], [6.75, 20.0], [6.97, 20.53], [7.5, 20.75], [8.03, 20.53], [8.25, 20.0], [8.15, 19.75], [8.25, 19.5], [8.15, 19.25], [8.18, 19.18], [8.25, 19.15], [8.5, 19.25], [9.03, 19.03], [9.25, 18.5], [9.04, 18.0], [9.25, 17.5], [9.03, 16.97], [8.5, 16.75], [8.25, 16.85], [8.0, 16.75], [7.75, 16.85], [7.5, 16.75], [7.25, 16.85], [7.0, 16.75], [6.75, 16.85], [6.5, 16.75], [6.25, 16.85], [6.0, 16.75], [5.47, 16.97], [5.25, 17.5], [5.46, 18.0], [5.25, 18.5], [5.47, 19.03]]]]}, "2018-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.25, 19.5], [5.47, 20.03], [5.82, 20.18], [5.97, 20.53], [6.5, 20.75], [6.75, 20.65], [7.0, 20.75], [7.25, 20.65], [7.5, 20.75], [8.03, 20.53], [8.25, 20.0], [8.15, 19.75], [8.25, 19.5], [8.15, 19.25], [8.18, 19.18], [8.25, 19.15], [8.5, 19.25], [9.03, 19.03], [9.25, 18.5], [9.04, 18.0], [9.25, 17.5], [9.03, 16.97], [8.5, 16.75], [8.25, 16.85], [8.0, 16.75], [7.75, 16.85], [7.5, 16.75], [7.25, 16.85], [7.0, 16.75], [6.75, 16.85], [6.5, 16.75], [6.25, 16.85], [6.0, 16.75], [5.47, 16.97], [5.25, 17.5], [5.38, 17.8], [4.97, 17.97], [4.75, 18.5], [4.97, 19.03], [5.32, 19.18], [5.35, 19.25], [5.25, 19.5]]]]}, "2018-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.25, 19.5], [5.47, 20.03], [5.82, 20.18], [5.97, 20.53], [6.5, 20.75], [6.75, 20.65], [7.0, 20.75], [7.25, 20.65], [7.5, 20.75], [8.03, 20.53], [8.25, 20.0], [8.15, 19.75], [8.25, 19.5], [8.15, 19.25], [8.18, 19.18], [8.25, 19.15], [8.5, 19.25], [9.03, 19.03], [9.25, 18.5], [9.04, 18.0], [9.25, 17.5], [9.03, 16.97], [8.5, 16.75], [8.25, 16.85], [8.0, 16.75], [7.75, 16.85], [7.5, 16.75], [7.25, 16.85], [7.0, 16.75], [6.75, 16.85], [6.5, 16.75], [6.25, 16.85], [6.0, 16.75], [5.47, 16.97], [5.25, 17.5], [5.38, 17.8], [4.97, 17.97], [4.75, 18.5], [4.97, 19.03], [5.32, 19.18], [5.35, 19.25], [5.25, 19.5]]]]}, "2018-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.25, 19.5], [5.47, 20.03], [5.82, 20.18], [5.97, 20.53], [6.5, 20.75], [6.75, 20.65], [7.0, 20.75], [7.53, 20.53], [7.75, 20.0], [7.65, 19.75], [7.68, 19.68], [8.03, 19.53], [8.25, 19.0], [8.15, 18.75], [8.25, 18.5], [8.03, 17.97], [7.5, 17.75], [7.25, 17.85], [7.0, 17.75], [6.75, 17.85], [6.63, 17.8], [6.75, 17.5], [6.53, 16.97], [6.0, 16.75], [5.47, 16.97], [5.25, 17.5], [5.38, 17.8], [4.97, 17.97], [4.75, 18.5], [4.97, 19.03], [5.32, 19.18], [5.35, 19.25], [5.25, 19.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.7624309853873115}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.853228916617587}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.39539969170863, 35.44956580983552, 35.503695558646086, 35.95931070194581, 35.64615711376206]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [34.629873028733584, 36.505693314011296, 36.39993225498222, 36.97485099272359, 36.15412896606631]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.5395575617846855, 1.7697682268857051, 1.7572984846158997, 2.1348741396344075, 1.6993528455328828]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.6283085478582962, 2.1975204485538598, 2.2642722487020706, 2.7624309853873115, 2.181563268219577]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3481313700161888, 1.55776980581296, 1.6459733757688366, 2.094598796280478, 1.6925525627749025]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.414789198245506, 1.8843731250453362, 2.048410078757458, 2.7576492070138827, 2.322816519318026]}}