{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:00.834536", "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": "2019-Jan-11_to_2019-Jan-20_10.5_2.5"}, "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": 2019010001825}, "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": "January 11 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 95668.48670463309}, "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": ["Cameroon", "Equatorial Guinea", "Gabon"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "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": []}, "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": 2.5}, "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": 10.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "10.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 9.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 12.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.0, 6.75], [10.53, 6.53], [10.75, 6.0], [10.53, 5.47], [10.0, 5.25], [9.47, 5.47], [9.25, 6.0], [9.47, 6.53], [10.0, 6.75]]]]}, "2019-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.25, 2.5], [9.46, 3.0], [9.25, 3.5], [9.47, 4.03], [10.0, 4.25], [10.53, 4.03], [10.68, 3.68], [11.03, 3.53], [11.18, 3.18], [11.53, 3.03], [11.68, 2.68], [11.75, 2.65], [11.82, 2.68], [11.97, 3.03], [12.5, 3.25], [13.03, 3.03], [13.25, 2.5], [13.15, 2.25], [13.25, 2.0], [13.03, 1.47], [12.5, 1.25], [12.25, 1.35], [12.0, 1.25], [11.75, 1.35], [11.5, 1.25], [11.25, 1.35], [11.0, 1.25], [10.75, 1.35], [10.68, 1.32], [10.53, 0.97], [10.0, 0.75], [9.47, 0.97], [9.25, 1.5], [9.35, 1.75], [9.25, 2.0], [9.35, 2.25], [9.25, 2.5]]], [[[9.47, 5.47], [9.25, 6.0], [9.47, 6.53], [10.0, 6.75], [10.53, 6.53], [10.75, 6.0], [10.53, 5.47], [10.0, 5.25], [9.47, 5.47]]]]}, "2019-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.25, 2.5], [9.46, 3.0], [9.25, 3.5], [9.47, 4.03], [10.0, 4.25], [10.53, 4.03], [10.68, 3.68], [11.03, 3.53], [11.18, 3.18], [11.53, 3.03], [11.68, 2.68], [11.75, 2.65], [11.82, 2.68], [11.97, 3.03], [12.5, 3.25], [13.03, 3.03], [13.25, 2.5], [13.15, 2.25], [13.25, 2.0], [13.03, 1.47], [12.5, 1.25], [12.25, 1.35], [12.0, 1.25], [11.75, 1.35], [11.5, 1.25], [11.25, 1.35], [11.0, 1.25], [10.75, 1.35], [10.68, 1.32], [10.53, 0.97], [10.0, 0.75], [9.47, 0.97], [9.25, 1.5], [9.35, 1.75], [9.25, 2.0], [9.35, 2.25], [9.25, 2.5]]], [[[9.47, 6.53], [10.0, 6.75], [10.53, 6.53], [10.68, 6.18], [11.03, 6.03], [11.25, 5.5], [11.03, 4.97], [10.5, 4.75], [9.97, 4.97], [9.82, 5.32], [9.47, 5.47], [9.25, 6.0], [9.47, 6.53]]]]}, "2019-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.35, 1.75], [9.25, 2.0], [9.35, 2.25], [9.25, 2.5], [9.46, 3.0], [9.25, 3.5], [9.47, 4.03], [10.0, 4.25], [10.53, 4.03], [10.68, 3.68], [11.03, 3.53], [11.18, 3.18], [11.53, 3.03], [11.68, 2.68], [11.75, 2.65], [11.82, 2.68], [11.97, 3.03], [12.5, 3.25], [13.03, 3.03], [13.25, 2.5], [13.15, 2.25], [13.25, 2.0], [13.03, 1.47], [12.5, 1.25], [12.25, 1.35], [12.0, 1.25], [11.75, 1.35], [11.68, 1.32], [11.53, 0.97], [11.18, 0.82], [11.15, 0.75], [11.25, 0.5], [11.03, -0.03], [10.5, -0.25], [10.25, -0.15], [10.0, -0.25], [9.75, -0.15], [9.5, -0.25], [8.97, -0.03], [8.75, 0.5], [8.97, 1.03], [9.32, 1.18], [9.35, 1.25], [9.25, 1.5], [9.35, 1.75]]], [[[8.97, 4.97], [8.75, 5.5], [8.97, 6.03], [9.5, 6.25], [10.0, 6.04], [10.5, 6.25], [11.03, 6.03], [11.25, 5.5], [11.03, 4.97], [10.68, 4.82], [10.53, 4.47], [10.0, 4.25], [9.47, 4.47], [9.32, 4.82], [8.97, 4.97]]]]}, "2019-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.97, 6.53], [9.5, 6.75], [10.03, 6.53], [10.2, 6.13], [10.5, 6.25], [11.03, 6.03], [11.25, 5.5], [11.03, 4.97], [10.68, 4.82], [10.54, 4.5], [10.75, 4.0], [10.65, 3.75], [10.75, 3.5], [10.63, 3.2], [11.03, 3.03], [11.18, 2.68], [11.25, 2.65], [11.5, 2.75], [11.75, 2.65], [11.82, 2.68], [11.97, 3.03], [12.5, 3.25], [13.03, 3.03], [13.25, 2.5], [13.15, 2.25], [13.25, 2.0], [13.03, 1.47], [12.5, 1.25], [12.25, 1.35], [12.0, 1.25], [11.75, 1.35], [11.68, 1.32], [11.53, 0.97], [11.18, 0.82], [11.15, 0.75], [11.25, 0.5], [11.03, -0.03], [10.5, -0.25], [10.25, -0.15], [10.0, -0.25], [9.75, -0.15], [9.5, -0.25], [8.97, -0.03], [8.75, 0.5], [8.97, 1.03], [9.32, 1.18], [9.35, 1.25], [9.25, 1.5], [9.35, 1.75], [9.25, 2.0], [9.35, 2.25], [9.25, 2.5], [9.46, 3.0], [9.25, 3.5], [9.35, 3.75], [9.25, 4.0], [9.46, 4.5], [9.32, 4.82], [8.97, 4.97], [8.75, 5.5], [8.85, 5.75], [8.75, 6.0], [8.97, 6.53]]]]}, "2019-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.97, 6.53], [9.5, 6.75], [10.03, 6.53], [10.25, 6.0], [10.15, 5.75], [10.18, 5.68], [10.53, 5.53], [10.75, 5.0], [10.65, 4.75], [10.75, 4.5], [10.65, 4.25], [10.75, 4.0], [10.65, 3.75], [10.75, 3.5], [10.63, 3.2], [11.03, 3.03], [11.18, 2.68], [11.25, 2.65], [11.5, 2.75], [11.75, 2.65], [11.82, 2.68], [11.97, 3.03], [12.5, 3.25], [13.03, 3.03], [13.25, 2.5], [13.15, 2.25], [13.25, 2.0], [13.03, 1.47], [12.5, 1.25], [12.25, 1.35], [12.0, 1.25], [11.75, 1.35], [11.68, 1.32], [11.53, 0.97], [11.18, 0.82], [11.15, 0.75], [11.25, 0.5], [11.03, -0.03], [10.5, -0.25], [10.25, -0.15], [10.0, -0.25], [9.75, -0.15], [9.5, -0.25], [8.97, -0.03], [8.75, 0.5], [8.97, 1.03], [9.32, 1.18], [9.35, 1.25], [9.25, 1.5], [9.35, 1.75], [9.25, 2.0], [9.35, 2.25], [9.25, 2.5], [9.46, 3.0], [9.25, 3.5], [9.35, 3.75], [9.25, 4.0], [9.35, 4.25], [9.25, 4.5], [9.35, 4.75], [9.32, 4.82], [8.97, 4.97], [8.75, 5.5], [8.85, 5.75], [8.75, 6.0], [8.97, 6.53]]]]}, "2019-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, 0.47], [9.25, 1.0], [9.47, 1.53], [10.0, 1.75], [10.53, 1.53], [10.75, 1.0], [10.53, 0.47], [10.0, 0.25], [9.47, 0.47]]], [[[10.53, 5.03], [10.75, 4.5], [10.65, 4.25], [10.75, 4.0], [10.53, 3.47], [10.0, 3.25], [9.47, 3.47], [9.25, 4.0], [9.35, 4.25], [9.25, 4.5], [9.47, 5.03], [10.0, 5.25], [10.53, 5.03]]], [[[8.75, 6.0], [8.97, 6.53], [9.5, 6.75], [10.03, 6.53], [10.25, 6.0], [10.03, 5.47], [9.5, 5.25], [8.97, 5.47], [8.75, 6.0]]]]}, "2019-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.75, 3.5], [9.88, 3.8], [9.47, 3.97], [9.25, 4.5], [9.47, 5.03], [10.0, 5.25], [10.53, 5.03], [10.75, 4.5], [10.63, 4.2], [10.75, 4.15], [11.0, 4.25], [11.25, 4.15], [11.5, 4.25], [11.75, 4.15], [12.0, 4.25], [12.53, 4.03], [12.75, 3.5], [12.53, 2.97], [12.0, 2.75], [11.75, 2.85], [11.68, 2.82], [11.53, 2.47], [11.18, 2.32], [11.03, 1.97], [10.5, 1.75], [10.25, 1.85], [10.0, 1.75], [9.47, 1.97], [9.25, 2.5], [9.47, 3.03], [9.82, 3.18], [9.85, 3.25], [9.75, 3.5]]]]}, "2019-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.75, 3.5], [9.97, 4.03], [10.5, 4.25], [10.75, 4.15], [11.0, 4.25], [11.25, 4.15], [11.5, 4.25], [11.75, 4.15], [12.0, 4.25], [12.53, 4.03], [12.75, 3.5], [12.53, 2.97], [12.0, 2.75], [11.75, 2.85], [11.68, 2.82], [11.53, 2.47], [11.18, 2.32], [11.03, 1.97], [10.5, 1.75], [10.25, 1.85], [10.0, 1.75], [9.47, 1.97], [9.25, 2.5], [9.47, 3.03], [9.82, 3.18], [9.85, 3.25], [9.75, 3.5]]]]}, "2019-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.75, 3.5], [9.97, 4.03], [10.5, 4.25], [10.75, 4.15], [11.0, 4.25], [11.25, 4.15], [11.5, 4.25], [11.75, 4.15], [12.0, 4.25], [12.53, 4.03], [12.75, 3.5], [12.53, 2.97], [12.0, 2.75], [11.75, 2.85], [11.68, 2.82], [11.53, 2.47], [11.18, 2.32], [11.03, 1.97], [10.5, 1.75], [10.25, 1.85], [10.0, 1.75], [9.47, 1.97], [9.25, 2.5], [9.47, 3.03], [9.82, 3.18], [9.85, 3.25], [9.75, 3.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.886537085633279}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.3812638663310786}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.479378649261264, 25.576203983504286, 25.500981482190355, 25.66163067629867, 25.893780936823134, 26.16076737663718, 27.00559913199413, 26.089542997047715, 25.754751936907553, 25.657511026059808]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.479378649261264, 27.631595924920305, 27.670101167704047, 27.843003869100528, 28.72990571339284, 28.608118553204918, 28.08421797319363, 28.220571039583547, 27.255714623210736, 26.993528311576824]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.4718642587826025, 1.3782846060770615, 1.3984522260880605, 1.3361485805250404, 1.4295675317849053, 1.4745713775386042, 1.2688299326349295, 1.3613681710250551, 1.3099772210691825, 1.2274469176519602]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.4718642587826025, 1.9386745168876018, 1.788898801358414, 2.0919829048806378, 2.886537085633279, 2.6724330926622315, 1.9791625463366245, 1.6488032511235247, 1.6070367794532103, 1.4102604011579842]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.392637512632742, 1.6854623243292328, 1.6586073255499612, 1.6133957792296234, 1.68768744088285, 1.7986389997373495, 1.450972696907687, 1.7703604786206055, 1.7094056287564512, 1.5486252667248355]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.392637512632742, 2.0636481807556466, 1.9755686250154774, 1.967065893356679, 2.2442281972772458, 2.2366022051997634, 1.603973704430102, 2.1444845982869896, 2.1002542668116666, 1.800948493623577]}}