{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:56.441837", "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-11_to_2017-Sep-14_3.5_25.0"}, "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": 2017090001682}, "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 11 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 14 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": 50661.223376935675}, "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": ["Algeria"]}, "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": 25.0}, "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": 3.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "3.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -0.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 5.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.47, 25.53], [3.0, 25.75], [3.25, 25.65], [3.32, 25.68], [3.47, 26.03], [4.0, 26.25], [4.53, 26.03], [4.68, 25.68], [4.75, 25.65], [5.0, 25.75], [5.53, 25.53], [5.75, 25.0], [5.53, 24.47], [5.0, 24.25], [4.75, 24.35], [4.5, 24.25], [4.2, 24.38], [4.03, 23.97], [3.5, 23.75], [3.25, 23.85], [3.0, 23.75], [2.47, 23.97], [2.25, 24.5], [2.35, 24.75], [2.25, 25.0], [2.47, 25.53]]]]}, "2017-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.53, 24.53], [-0.18, 24.68], [-0.03, 25.03], [0.5, 25.25], [0.75, 25.15], [1.0, 25.25], [1.25, 25.15], [1.5, 25.25], [2.03, 25.03], [2.18, 24.68], [2.25, 24.65], [2.32, 24.68], [2.35, 24.75], [2.25, 25.0], [2.47, 25.53], [3.0, 25.75], [3.25, 25.65], [3.32, 25.68], [3.47, 26.03], [4.0, 26.25], [4.53, 26.03], [4.68, 25.68], [4.75, 25.65], [5.0, 25.75], [5.53, 25.53], [5.75, 25.0], [5.53, 24.47], [5.0, 24.25], [4.75, 24.35], [4.5, 24.25], [4.2, 24.38], [4.03, 23.97], [3.68, 23.82], [3.53, 23.47], [3.0, 23.25], [2.75, 23.35], [2.5, 23.25], [2.25, 23.35], [2.0, 23.25], [1.75, 23.35], [1.5, 23.25], [1.25, 23.35], [1.0, 23.25], [0.75, 23.35], [0.68, 23.32], [0.53, 22.97], [0.0, 22.75], [-0.53, 22.97], [-0.75, 23.5], [-0.65, 23.75], [-0.75, 24.0], [-0.53, 24.53]]]]}, "2017-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.53, 24.53], [-0.18, 24.68], [-0.03, 25.03], [0.5, 25.25], [0.75, 25.15], [1.0, 25.25], [1.25, 25.15], [1.5, 25.25], [2.03, 25.03], [2.18, 24.68], [2.25, 24.65], [2.32, 24.68], [2.35, 24.75], [2.25, 25.0], [2.47, 25.53], [3.0, 25.75], [3.25, 25.65], [3.32, 25.68], [3.47, 26.03], [4.0, 26.25], [4.53, 26.03], [4.68, 25.68], [4.75, 25.65], [5.0, 25.75], [5.53, 25.53], [5.75, 25.0], [5.53, 24.47], [5.0, 24.25], [4.75, 24.35], [4.5, 24.25], [4.2, 24.38], [4.03, 23.97], [3.68, 23.82], [3.53, 23.47], [3.0, 23.25], [2.75, 23.35], [2.5, 23.25], [2.25, 23.35], [2.0, 23.25], [1.75, 23.35], [1.5, 23.25], [1.25, 23.35], [1.0, 23.25], [0.75, 23.35], [0.68, 23.32], [0.53, 22.97], [0.0, 22.75], [-0.53, 22.97], [-0.75, 23.5], [-0.65, 23.75], [-0.75, 24.0], [-0.53, 24.53]]]]}, "2017-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.53, 24.53], [-0.18, 24.68], [-0.03, 25.03], [0.5, 25.25], [0.75, 25.15], [1.0, 25.25], [1.25, 25.15], [1.5, 25.25], [2.03, 25.03], [2.18, 24.68], [2.25, 24.65], [2.5, 24.75], [2.75, 24.65], [3.0, 24.75], [3.53, 24.53], [3.75, 24.0], [3.53, 23.47], [3.0, 23.25], [2.75, 23.35], [2.5, 23.25], [2.25, 23.35], [2.0, 23.25], [1.75, 23.35], [1.5, 23.25], [1.25, 23.35], [1.0, 23.25], [0.75, 23.35], [0.68, 23.32], [0.53, 22.97], [0.0, 22.75], [-0.53, 22.97], [-0.75, 23.5], [-0.65, 23.75], [-0.75, 24.0], [-0.53, 24.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.92387757563057}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.601783829815545}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [36.20098441488665, 37.189289581915034, 37.82146961941271, 37.770316587390425]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [38.38740705701673, 38.69568458157693, 39.66836027801679, 38.271066782110836]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.3597628285427357, 2.311515279775531, 3.0638802067207203, 2.47462438666434]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.658883058188451, 3.2372743041278795, 3.92387757563057, 2.9250019857103666]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5145802834655842, 1.535608223426928, 2.009879520291918, 1.6084986448321097]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.841386234122754, 2.140870329354737, 2.429599592641128, 1.8644757824002363]}}