{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:42.929621", "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-May-26_to_2019-May-28_6.0_30.5"}, "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": 2019050000701}, "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 26 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 28 2019"}, "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": 50913.79160681738}, "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": ["Algeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "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": 30.5}, "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": 6.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "6.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 4.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 8.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.32, 30.68], [5.47, 31.03], [6.0, 31.25], [6.25, 31.15], [6.5, 31.25], [6.75, 31.15], [6.82, 31.18], [6.97, 31.53], [7.5, 31.75], [8.03, 31.53], [8.25, 31.0], [8.15, 30.75], [8.18, 30.68], [8.53, 30.53], [8.75, 30.0], [8.65, 29.75], [8.75, 29.5], [8.53, 28.97], [8.18, 28.82], [8.03, 28.47], [7.5, 28.25], [7.25, 28.35], [7.0, 28.25], [6.47, 28.47], [6.32, 28.82], [6.0, 28.96], [5.5, 28.75], [5.25, 28.85], [5.0, 28.75], [4.47, 28.97], [4.25, 29.5], [4.47, 30.03], [4.82, 30.18], [4.97, 30.53], [5.32, 30.68]]]]}, "2019-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.32, 30.68], [5.47, 31.03], [6.0, 31.25], [6.25, 31.15], [6.5, 31.25], [6.75, 31.15], [6.82, 31.18], [6.97, 31.53], [7.5, 31.75], [8.03, 31.53], [8.25, 31.0], [8.15, 30.75], [8.18, 30.68], [8.53, 30.53], [8.75, 30.0], [8.65, 29.75], [8.75, 29.5], [8.53, 28.97], [8.18, 28.82], [8.03, 28.47], [7.5, 28.25], [7.25, 28.35], [7.0, 28.25], [6.47, 28.47], [6.32, 28.82], [6.0, 28.96], [5.5, 28.75], [5.25, 28.85], [5.0, 28.75], [4.47, 28.97], [4.25, 29.5], [4.47, 30.03], [4.82, 30.18], [4.97, 30.53], [5.32, 30.68]]]]}, "2019-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.32, 30.68], [5.47, 31.03], [6.0, 31.25], [6.25, 31.15], [6.5, 31.25], [6.75, 31.15], [6.82, 31.18], [6.97, 31.53], [7.5, 31.75], [8.03, 31.53], [8.25, 31.0], [8.15, 30.75], [8.18, 30.68], [8.53, 30.53], [8.75, 30.0], [8.65, 29.75], [8.75, 29.5], [8.53, 28.97], [8.18, 28.82], [8.03, 28.47], [7.5, 28.25], [7.25, 28.35], [7.0, 28.25], [6.47, 28.47], [6.32, 28.82], [6.0, 28.96], [5.5, 28.75], [5.25, 28.85], [5.0, 28.75], [4.47, 28.97], [4.25, 29.5], [4.47, 30.03], [4.82, 30.18], [4.97, 30.53], [5.32, 30.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.124295640021103}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.729752140290041}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.191386630487955, 24.29423628247656, 25.65951725724011]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.855332023755693, 23.701875930626386, 25.215706124517567]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.975430690177374, -6.153265862627246, -5.0605598680655035]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.124295640021103, -6.599035657064576, -5.372287800561992]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7129090380359955, -1.8269377897468981, -1.5172396000240538]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0531477771156963, -1.9647310095596888, -1.624429190704139]}}