{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:57.056518", "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": "2017-Sep-13_to_2017-Sep-16_352.5_20.5"}, "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": 2017090001835}, "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 13 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 16 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 57703.64191655753}, "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", "Mauritania"]}, "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": 20.5}, "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": 352.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "352.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 350.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 355.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.75}, "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": {"2017-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.5, 21.75], [-7.97, 21.53], [-7.82, 21.18], [-7.75, 21.15], [-7.68, 21.18], [-7.65, 21.25], [-7.75, 21.5], [-7.53, 22.03], [-7.0, 22.25], [-6.75, 22.15], [-6.5, 22.25], [-6.25, 22.15], [-6.0, 22.25], [-5.75, 22.15], [-5.68, 22.18], [-5.53, 22.53], [-5.0, 22.75], [-4.47, 22.53], [-4.32, 22.18], [-3.97, 22.03], [-3.75, 21.5], [-3.85, 21.25], [-3.75, 21.0], [-3.97, 20.47], [-4.5, 20.25], [-4.75, 20.35], [-5.0, 20.25], [-5.25, 20.35], [-5.5, 20.25], [-5.75, 20.35], [-5.82, 20.32], [-5.97, 19.97], [-6.5, 19.75], [-7.0, 19.96], [-7.32, 19.82], [-7.47, 19.47], [-8.0, 19.25], [-8.53, 19.47], [-8.68, 19.82], [-8.75, 19.85], [-9.0, 19.75], [-9.53, 19.97], [-9.75, 20.5], [-9.53, 21.03], [-9.18, 21.18], [-9.03, 21.53], [-8.5, 21.75]]]]}, "2017-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.5, 21.75], [-7.97, 21.53], [-7.82, 21.18], [-7.75, 21.15], [-7.68, 21.18], [-7.65, 21.25], [-7.75, 21.5], [-7.53, 22.03], [-7.0, 22.25], [-6.75, 22.15], [-6.5, 22.25], [-6.25, 22.15], [-6.0, 22.25], [-5.75, 22.15], [-5.68, 22.18], [-5.53, 22.53], [-5.0, 22.75], [-4.47, 22.53], [-4.32, 22.18], [-3.97, 22.03], [-3.75, 21.5], [-3.85, 21.25], [-3.75, 21.0], [-3.97, 20.47], [-4.5, 20.25], [-4.75, 20.35], [-5.0, 20.25], [-5.25, 20.35], [-5.5, 20.25], [-5.75, 20.35], [-5.82, 20.32], [-5.97, 19.97], [-6.5, 19.75], [-7.0, 19.96], [-7.32, 19.82], [-7.47, 19.47], [-8.0, 19.25], [-8.53, 19.47], [-8.68, 19.82], [-8.75, 19.85], [-9.0, 19.75], [-9.53, 19.97], [-9.75, 20.5], [-9.53, 21.03], [-9.18, 21.18], [-9.03, 21.53], [-8.5, 21.75]]]]}, "2017-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.5, 21.75], [-7.97, 21.53], [-7.82, 21.18], [-7.75, 21.15], [-7.68, 21.18], [-7.65, 21.25], [-7.75, 21.5], [-7.53, 22.03], [-7.0, 22.25], [-6.75, 22.15], [-6.5, 22.25], [-6.25, 22.15], [-6.0, 22.25], [-5.75, 22.15], [-5.68, 22.18], [-5.53, 22.53], [-5.0, 22.75], [-4.47, 22.53], [-4.32, 22.18], [-3.97, 22.03], [-3.75, 21.5], [-3.85, 21.25], [-3.75, 21.0], [-3.97, 20.47], [-4.5, 20.25], [-4.75, 20.35], [-5.0, 20.25], [-5.25, 20.35], [-5.5, 20.25], [-5.75, 20.35], [-5.82, 20.32], [-5.97, 19.97], [-6.5, 19.75], [-7.0, 19.96], [-7.32, 19.82], [-7.47, 19.47], [-8.0, 19.25], [-8.53, 19.47], [-8.68, 19.82], [-8.75, 19.85], [-9.0, 19.75], [-9.53, 19.97], [-9.75, 20.5], [-9.53, 21.03], [-9.18, 21.18], [-9.03, 21.53], [-8.5, 21.75]]]]}, "2017-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.75, 20.5], [-8.53, 21.03], [-8.0, 21.25], [-7.75, 21.15], [-7.68, 21.18], [-7.65, 21.25], [-7.75, 21.5], [-7.53, 22.03], [-7.0, 22.25], [-6.75, 22.15], [-6.5, 22.25], [-5.97, 22.03], [-5.75, 21.5], [-5.85, 21.25], [-5.75, 21.0], [-5.97, 20.47], [-6.5, 20.25], [-6.75, 20.35], [-6.82, 20.32], [-6.97, 19.97], [-7.5, 19.75], [-7.75, 19.85], [-8.0, 19.75], [-8.53, 19.97], [-8.75, 20.5]]], [[[-5.53, 21.47], [-5.75, 22.0], [-5.53, 22.53], [-5.0, 22.75], [-4.47, 22.53], [-4.25, 22.0], [-4.47, 21.47], [-5.0, 21.25], [-5.53, 21.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.056049595261811}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.390722372906848}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [37.09434783168274, 36.712228118074336, 36.700045467928135, 36.25457885498105]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [38.477687755782256, 38.553284730530436, 38.2822005948272, 37.331389124808595]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.5799115165906046, 2.27564726678074, 2.3836162043768923, 2.199271318542011]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.8134626273732692, 3.056049595261811, 2.802398041026663, 2.4517502627167573]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7490028087803722, 1.5121326292159478, 1.600667769667997, 1.4128586809472128]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9732052338550976, 2.0504645913719157, 1.9628740142601482, 1.5871081620885024]}}