{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:43.229373", "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-Dec-04_to_2017-Dec-07_1.0_8.0"}, "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": 2017120001483}, "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": "December 04 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 07 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": 98058.09313134238}, "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": ["Benin", "Nigeria", "Togo"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "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": ["Gulf of Guinea"]}, "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": 8.0}, "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": 1.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "1.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 0.75}, "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": 6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 8.53], [1.0, 8.75], [1.25, 8.65], [1.5, 8.75], [1.75, 8.65], [1.82, 8.68], [1.97, 9.03], [2.5, 9.25], [2.75, 9.15], [3.0, 9.25], [3.25, 9.15], [3.5, 9.25], [4.0, 9.04], [4.5, 9.25], [4.75, 9.15], [5.0, 9.25], [5.53, 9.03], [5.75, 8.5], [5.53, 7.97], [5.18, 7.82], [5.15, 7.75], [5.25, 7.5], [5.15, 7.25], [5.25, 7.0], [5.03, 6.47], [4.68, 6.32], [4.53, 5.97], [4.0, 5.75], [3.75, 5.85], [3.5, 5.75], [3.25, 5.85], [3.0, 5.75], [2.75, 5.85], [2.5, 5.75], [2.25, 5.85], [2.0, 5.75], [1.75, 5.85], [1.5, 5.75], [0.97, 5.97], [0.82, 6.32], [0.47, 6.47], [0.25, 7.0], [0.35, 7.25], [0.25, 7.5], [0.35, 7.75], [0.25, 8.0], [0.47, 8.53]]]]}, "2017-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 8.53], [1.0, 8.75], [1.25, 8.65], [1.5, 8.75], [1.75, 8.65], [1.82, 8.68], [1.97, 9.03], [2.5, 9.25], [2.75, 9.15], [3.0, 9.25], [3.25, 9.15], [3.5, 9.25], [4.0, 9.04], [4.5, 9.25], [4.75, 9.15], [5.0, 9.25], [5.53, 9.03], [5.75, 8.5], [5.53, 7.97], [5.18, 7.82], [5.15, 7.75], [5.25, 7.5], [5.15, 7.25], [5.25, 7.0], [5.03, 6.47], [4.68, 6.32], [4.53, 5.97], [4.0, 5.75], [3.75, 5.85], [3.5, 5.75], [3.25, 5.85], [3.0, 5.75], [2.75, 5.85], [2.5, 5.75], [2.25, 5.85], [2.0, 5.75], [1.75, 5.85], [1.5, 5.75], [0.97, 5.97], [0.82, 6.32], [0.47, 6.47], [0.25, 7.0], [0.35, 7.25], [0.25, 7.5], [0.35, 7.75], [0.25, 8.0], [0.47, 8.53]]]]}, "2017-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 8.53], [1.0, 8.75], [1.25, 8.65], [1.5, 8.75], [1.75, 8.65], [1.82, 8.68], [1.97, 9.03], [2.5, 9.25], [2.75, 9.15], [3.0, 9.25], [3.25, 9.15], [3.5, 9.25], [4.0, 9.04], [4.5, 9.25], [4.75, 9.15], [5.0, 9.25], [5.53, 9.03], [5.75, 8.5], [5.53, 7.97], [5.18, 7.82], [5.15, 7.75], [5.25, 7.5], [5.15, 7.25], [5.25, 7.0], [5.03, 6.47], [4.68, 6.32], [4.53, 5.97], [4.0, 5.75], [3.75, 5.85], [3.5, 5.75], [3.25, 5.85], [3.0, 5.75], [2.75, 5.85], [2.5, 5.75], [2.25, 5.85], [2.0, 5.75], [1.75, 5.85], [1.5, 5.75], [0.97, 5.97], [0.82, 6.32], [0.47, 6.47], [0.25, 7.0], [0.35, 7.25], [0.25, 7.5], [0.35, 7.75], [0.25, 8.0], [0.47, 8.53]]]]}, "2017-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.47, 7.47], [0.25, 8.0], [0.47, 8.53], [1.0, 8.75], [1.25, 8.65], [1.5, 8.75], [2.03, 8.53], [2.25, 8.0], [2.03, 7.47], [1.5, 7.25], [1.25, 7.35], [1.0, 7.25], [0.47, 7.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.174388845181113}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.360778212588667}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.45323327423688, 28.755506317373886, 28.671886372490803, 28.561749739145853]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.353555343876565, 29.68586397480948, 29.424670701778382, 28.614283342241038]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.15067806269413, 1.4848044389625787, 1.4425128925125836, 1.4302061101359982]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.7723684832042181, 2.174388845181113, 1.8568340394783718, 1.5807121383250546]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4502805635518599, 1.8639648336247912, 1.8349432708897875, 1.3590647896778976]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9362850566683019, 2.2521457447872657, 2.3125761958179303, 1.4887308726790618]}}