{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:37.156993", "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-Oct-27_to_2012-Oct-29_353.0_9.5"}, "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": 2012100001083}, "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": "October 27 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 29 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 67031.68054425034}, "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", "Mali"]}, "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": 9.5}, "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": 353.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 354.75}, "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": 11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.15, 9.25], [-8.25, 9.5], [-8.04, 10.0], [-8.25, 10.5], [-8.03, 11.03], [-7.5, 11.25], [-7.2, 11.12], [-7.03, 11.53], [-6.5, 11.75], [-6.25, 11.65], [-6.0, 11.75], [-5.75, 11.65], [-5.5, 11.75], [-4.97, 11.53], [-4.75, 11.0], [-4.85, 10.75], [-4.75, 10.5], [-4.97, 9.97], [-5.32, 9.82], [-5.35, 9.75], [-5.25, 9.5], [-5.35, 9.25], [-5.25, 9.0], [-5.47, 8.47], [-5.82, 8.32], [-5.97, 7.97], [-6.32, 7.82], [-6.47, 7.47], [-7.0, 7.25], [-7.53, 7.47], [-7.68, 7.82], [-8.03, 7.97], [-8.25, 8.5], [-8.15, 8.75], [-8.25, 9.0], [-8.15, 9.25]]]]}, "2012-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.15, 9.25], [-8.25, 9.5], [-8.04, 10.0], [-8.25, 10.5], [-8.03, 11.03], [-7.5, 11.25], [-7.2, 11.12], [-7.03, 11.53], [-6.5, 11.75], [-6.25, 11.65], [-6.0, 11.75], [-5.75, 11.65], [-5.5, 11.75], [-4.97, 11.53], [-4.75, 11.0], [-4.85, 10.75], [-4.75, 10.5], [-4.97, 9.97], [-5.32, 9.82], [-5.35, 9.75], [-5.25, 9.5], [-5.35, 9.25], [-5.25, 9.0], [-5.47, 8.47], [-5.82, 8.32], [-5.97, 7.97], [-6.32, 7.82], [-6.47, 7.47], [-7.0, 7.25], [-7.53, 7.47], [-7.68, 7.82], [-8.03, 7.97], [-8.25, 8.5], [-8.15, 8.75], [-8.25, 9.0], [-8.15, 9.25]]]]}, "2012-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.15, 9.25], [-8.25, 9.5], [-8.04, 10.0], [-8.25, 10.5], [-8.03, 11.03], [-7.5, 11.25], [-7.2, 11.12], [-7.03, 11.53], [-6.5, 11.75], [-6.25, 11.65], [-6.0, 11.75], [-5.75, 11.65], [-5.5, 11.75], [-4.97, 11.53], [-4.75, 11.0], [-4.85, 10.75], [-4.75, 10.5], [-4.97, 9.97], [-5.32, 9.82], [-5.35, 9.75], [-5.25, 9.5], [-5.35, 9.25], [-5.25, 9.0], [-5.47, 8.47], [-5.82, 8.32], [-5.97, 7.97], [-6.32, 7.82], [-6.47, 7.47], [-7.0, 7.25], [-7.53, 7.47], [-7.68, 7.82], [-8.03, 7.97], [-8.25, 8.5], [-8.15, 8.75], [-8.25, 9.0], [-8.15, 9.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.0294744972557055}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.48353256634931}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.033241698995823, 24.983553658080666, 25.006229322295326]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.15288906436092, 24.118215272870884, 24.355092016839876]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4852563872246791, -1.4976285207037434, -1.4677127911195074]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9737524164899014, -2.0294744972557055, -1.8277895704042635]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7400030429822855, -1.7020586961723192, -1.666223724690657]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.263660070820146, -2.1625772585059693, -2.1367237123261678]}}