{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:25.512347", "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": "2012-May-29_to_2012-Jun-01_358.0_9.0"}, "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": 2012050001486}, "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": "May 29 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 01 2012"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 67142.0061179928}, "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": ["C\u00f4te d'Ivoire", "Ghana"]}, "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": []}, "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": 9.0}, "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": 358.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "358.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 355.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 360.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 10.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 8.47], [-4.75, 9.0], [-4.53, 9.53], [-4.0, 9.75], [-3.75, 9.65], [-3.68, 9.68], [-3.53, 10.03], [-3.18, 10.18], [-3.03, 10.53], [-2.5, 10.75], [-2.25, 10.65], [-2.0, 10.75], [-1.75, 10.65], [-1.5, 10.75], [-0.97, 10.53], [-0.75, 10.0], [-0.85, 9.75], [-0.75, 9.5], [-0.85, 9.25], [-0.75, 9.0], [-0.85, 8.75], [-0.75, 8.5], [-0.97, 7.97], [-1.5, 7.75], [-1.75, 7.85], [-1.82, 7.82], [-1.97, 7.47], [-2.5, 7.25], [-3.03, 7.47], [-3.25, 8.0], [-3.15, 8.25], [-3.18, 8.32], [-3.25, 8.35], [-3.5, 8.25], [-3.75, 8.35], [-4.0, 8.25], [-4.53, 8.47]]]]}, "2012-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 8.47], [-4.75, 9.0], [-4.53, 9.53], [-4.0, 9.75], [-3.75, 9.65], [-3.68, 9.68], [-3.53, 10.03], [-3.18, 10.18], [-3.03, 10.53], [-2.5, 10.75], [-2.25, 10.65], [-2.0, 10.75], [-1.75, 10.65], [-1.5, 10.75], [-0.97, 10.53], [-0.82, 10.18], [-0.75, 10.15], [-0.5, 10.25], [0.03, 10.03], [0.18, 9.68], [0.53, 9.53], [0.75, 9.0], [0.53, 8.47], [0.0, 8.25], [-0.5, 8.46], [-0.82, 8.32], [-0.85, 8.25], [-0.75, 8.0], [-0.97, 7.47], [-1.5, 7.25], [-2.0, 7.46], [-2.5, 7.25], [-3.03, 7.47], [-3.25, 8.0], [-3.15, 8.25], [-3.18, 8.32], [-3.25, 8.35], [-3.5, 8.25], [-3.75, 8.35], [-4.0, 8.25], [-4.53, 8.47]]]]}, "2012-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 8.47], [-4.75, 9.0], [-4.53, 9.53], [-4.0, 9.75], [-3.75, 9.65], [-3.68, 9.68], [-3.53, 10.03], [-3.18, 10.18], [-3.03, 10.53], [-2.5, 10.75], [-2.25, 10.65], [-2.0, 10.75], [-1.75, 10.65], [-1.5, 10.75], [-0.97, 10.53], [-0.82, 10.18], [-0.75, 10.15], [-0.5, 10.25], [0.03, 10.03], [0.18, 9.68], [0.53, 9.53], [0.75, 9.0], [0.53, 8.47], [0.0, 8.25], [-0.5, 8.46], [-0.82, 8.32], [-0.85, 8.25], [-0.75, 8.0], [-0.97, 7.47], [-1.5, 7.25], [-2.0, 7.46], [-2.5, 7.25], [-3.03, 7.47], [-3.25, 8.0], [-3.15, 8.25], [-3.18, 8.32], [-3.25, 8.35], [-3.5, 8.25], [-3.75, 8.35], [-4.0, 8.25], [-4.53, 8.47]]]]}, "2012-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.53, 9.53], [-2.18, 9.68], [-2.03, 10.03], [-1.5, 10.25], [-1.25, 10.15], [-1.0, 10.25], [-0.75, 10.15], [-0.5, 10.25], [0.03, 10.03], [0.18, 9.68], [0.53, 9.53], [0.75, 9.0], [0.53, 8.47], [0.0, 8.25], [-0.5, 8.46], [-0.82, 8.32], [-0.85, 8.25], [-0.75, 8.0], [-0.97, 7.47], [-1.5, 7.25], [-2.03, 7.47], [-2.18, 7.82], [-2.53, 7.97], [-2.75, 8.5], [-2.65, 8.75], [-2.75, 9.0], [-2.53, 9.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.895521113362747}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.411979959383318}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.460163408687663, 25.77479168913959, 24.988997992195948, 26.08904283246278]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.210754422163802, 25.10809503764017, 24.063848229386565, 25.289815367739664]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4253580511822594, -2.135007028618384, -2.8609301590012524, -2.010887211848518]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8586789385557836, -2.701222754947082, -3.895521113362747, -2.3099774556981174]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8962699112309565, -1.6530235043366133, -2.2540945599466773, -1.5243735438090966]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.418865795153554, -1.9341887004058345, -2.803783592118372, -1.7570967345264736]}}