{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:02.946967", "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-01_to_2018-Sep-06_16.5_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": 2018090001248}, "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 01 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 06 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 120274.78868786055}, "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": 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": 16.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.75}, "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": {"2018-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, 20.03], [15.82, 20.18], [15.97, 20.53], [16.5, 20.75], [16.75, 20.65], [17.0, 20.75], [17.53, 20.53], [17.68, 20.18], [18.03, 20.03], [18.18, 19.68], [18.53, 19.53], [18.68, 19.18], [18.75, 19.15], [19.0, 19.25], [19.53, 19.03], [19.75, 18.5], [19.53, 17.97], [19.0, 17.75], [18.75, 17.85], [18.5, 17.75], [18.25, 17.85], [18.0, 17.75], [17.75, 17.85], [17.5, 17.75], [16.97, 17.97], [16.8, 18.38], [16.5, 18.25], [16.25, 18.35], [16.0, 18.25], [15.47, 18.47], [15.25, 19.0], [15.35, 19.25], [15.25, 19.5], [15.47, 20.03]]]]}, "2018-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.47, 18.97], [14.25, 19.5], [14.47, 20.03], [15.0, 20.25], [15.5, 20.04], [15.82, 20.18], [15.97, 20.53], [16.5, 20.75], [16.75, 20.65], [17.0, 20.75], [17.53, 20.53], [17.68, 20.18], [18.03, 20.03], [18.18, 19.68], [18.53, 19.53], [18.68, 19.18], [18.75, 19.15], [19.0, 19.25], [19.53, 19.03], [19.75, 18.5], [19.54, 18.0], [19.75, 17.5], [19.53, 16.97], [19.18, 16.82], [19.03, 16.47], [18.5, 16.25], [18.25, 16.35], [18.0, 16.25], [17.47, 16.47], [17.25, 17.0], [17.47, 17.53], [17.82, 17.68], [17.85, 17.75], [17.82, 17.82], [17.75, 17.85], [17.5, 17.75], [16.97, 17.97], [16.8, 18.38], [16.5, 18.25], [16.25, 18.35], [16.0, 18.25], [15.47, 18.47], [15.3, 18.88], [15.0, 18.75], [14.47, 18.97]]]]}, "2018-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.47, 18.97], [14.25, 19.5], [14.47, 20.03], [15.0, 20.25], [15.5, 20.04], [15.82, 20.18], [15.97, 20.53], [16.5, 20.75], [16.75, 20.65], [17.0, 20.75], [17.53, 20.53], [17.68, 20.18], [18.03, 20.03], [18.18, 19.68], [18.53, 19.53], [18.68, 19.18], [18.75, 19.15], [19.0, 19.25], [19.53, 19.03], [19.75, 18.5], [19.54, 18.0], [19.75, 17.5], [19.53, 16.97], [19.18, 16.82], [19.03, 16.47], [18.5, 16.25], [18.25, 16.35], [18.0, 16.25], [17.75, 16.35], [17.5, 16.25], [17.25, 16.35], [17.0, 16.25], [16.47, 16.47], [16.3, 16.88], [16.0, 16.75], [15.47, 16.97], [15.25, 17.5], [15.35, 17.75], [15.25, 18.0], [15.35, 18.25], [15.25, 18.5], [15.35, 18.75], [15.3, 18.88], [15.0, 18.75], [14.47, 18.97]]]]}, "2018-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, 18.25], [14.25, 18.5], [14.46, 19.0], [14.25, 19.5], [14.47, 20.03], [15.0, 20.25], [15.5, 20.04], [16.0, 20.25], [16.25, 20.15], [16.5, 20.25], [16.75, 20.15], [17.0, 20.25], [17.53, 20.03], [17.68, 19.68], [18.03, 19.53], [18.18, 19.18], [18.53, 19.03], [18.68, 18.68], [19.03, 18.53], [19.18, 18.18], [19.53, 18.03], [19.75, 17.5], [19.53, 16.97], [19.18, 16.82], [19.03, 16.47], [18.5, 16.25], [18.25, 16.35], [18.0, 16.25], [17.75, 16.35], [17.5, 16.25], [17.25, 16.35], [17.0, 16.25], [16.47, 16.47], [16.3, 16.88], [16.0, 16.75], [15.75, 16.85], [15.5, 16.75], [15.25, 16.85], [15.0, 16.75], [14.47, 16.97], [14.25, 17.5], [14.35, 17.75], [14.25, 18.0], [14.35, 18.25]]]]}, "2018-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, 18.25], [14.25, 18.5], [14.47, 19.03], [14.82, 19.18], [14.97, 19.53], [15.5, 19.75], [15.75, 19.65], [16.0, 19.75], [16.25, 19.65], [16.32, 19.68], [16.47, 20.03], [17.0, 20.25], [17.53, 20.03], [17.68, 19.68], [18.03, 19.53], [18.18, 19.18], [18.53, 19.03], [18.68, 18.68], [19.03, 18.53], [19.18, 18.18], [19.53, 18.03], [19.75, 17.5], [19.53, 16.97], [19.18, 16.82], [19.03, 16.47], [18.5, 16.25], [18.25, 16.35], [18.0, 16.25], [17.75, 16.35], [17.5, 16.25], [17.25, 16.35], [17.0, 16.25], [16.47, 16.47], [16.3, 16.88], [16.0, 16.75], [15.75, 16.85], [15.5, 16.75], [15.25, 16.85], [15.0, 16.75], [14.47, 16.97], [14.25, 17.5], [14.35, 17.75], [14.25, 18.0], [14.35, 18.25]]]]}, "2018-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, 18.25], [14.25, 18.5], [14.47, 19.03], [14.82, 19.18], [14.97, 19.53], [15.5, 19.75], [15.75, 19.65], [16.0, 19.75], [16.25, 19.65], [16.32, 19.68], [16.47, 20.03], [17.0, 20.25], [17.53, 20.03], [17.68, 19.68], [18.03, 19.53], [18.25, 19.0], [18.15, 18.75], [18.25, 18.5], [18.03, 17.97], [17.68, 17.82], [17.53, 17.47], [17.0, 17.25], [16.75, 17.35], [16.5, 17.25], [16.25, 17.35], [16.18, 17.32], [16.03, 16.97], [15.5, 16.75], [15.25, 16.85], [15.0, 16.75], [14.47, 16.97], [14.25, 17.5], [14.35, 17.75], [14.25, 18.0], [14.35, 18.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.796900517160225}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.015326184034666}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [34.840179502435035, 35.28386410010182, 35.49292158162706, 35.140228315814625, 35.505995514353, 34.642532791718]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [36.00565826864005, 36.691605857622676, 36.63860376367245, 36.34514721597549, 37.32771202798227, 35.54136316735446]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7613026968796948, 1.9821998562370147, 2.0598416504699912, 1.8952080785944938, 2.256303510346532, 1.9603553638889066]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.094370353749923, 2.7544703349170163, 2.796900517160225, 2.3074595798606765, 2.7777511076672, 2.3257979251836787]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4002695368666052, 1.5368481159591734, 1.555967000885697, 1.446025707680871, 1.617611679393402, 1.5084217019412753]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.589898695515605, 2.1547331059494894, 2.2742865307945603, 1.9185048174875572, 1.8244764129504103, 1.757508712804595]}}