{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:42.851397", "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": "2010-May-30_to_2010-Jun-01_8.5_28.5"}, "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": 2010050000931}, "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 30 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 01 2010"}, "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": 62969.75416031918}, "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", "Libya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 28.5}, "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": 8.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "8.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 6.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 11.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 27.47], [6.25, 28.0], [6.47, 28.53], [7.0, 28.75], [7.25, 28.65], [7.5, 28.75], [7.75, 28.65], [7.82, 28.68], [7.97, 29.03], [8.5, 29.25], [9.03, 29.03], [9.18, 28.68], [9.25, 28.65], [9.32, 28.68], [9.47, 29.03], [10.0, 29.25], [10.25, 29.15], [10.5, 29.25], [10.75, 29.15], [11.0, 29.25], [11.25, 29.15], [11.5, 29.25], [12.03, 29.03], [12.25, 28.5], [12.03, 27.97], [11.5, 27.75], [11.25, 27.85], [11.18, 27.82], [11.15, 27.75], [11.25, 27.5], [11.03, 26.97], [10.68, 26.82], [10.65, 26.75], [10.68, 26.68], [11.03, 26.53], [11.25, 26.0], [11.03, 25.47], [10.5, 25.25], [9.97, 25.47], [9.82, 25.82], [9.75, 25.85], [9.5, 25.75], [8.97, 25.97], [8.82, 26.32], [8.47, 26.47], [8.32, 26.82], [7.97, 26.97], [7.82, 27.32], [7.75, 27.35], [7.5, 27.25], [7.25, 27.35], [7.0, 27.25], [6.47, 27.47]]]]}, "2010-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 27.47], [6.25, 28.0], [6.47, 28.53], [7.0, 28.75], [7.25, 28.65], [7.5, 28.75], [7.75, 28.65], [7.82, 28.68], [7.97, 29.03], [8.5, 29.25], [9.03, 29.03], [9.18, 28.68], [9.25, 28.65], [9.32, 28.68], [9.47, 29.03], [10.0, 29.25], [10.25, 29.15], [10.5, 29.25], [10.75, 29.15], [11.0, 29.25], [11.25, 29.15], [11.5, 29.25], [12.03, 29.03], [12.25, 28.5], [12.03, 27.97], [11.5, 27.75], [11.25, 27.85], [11.18, 27.82], [11.15, 27.75], [11.25, 27.5], [11.03, 26.97], [10.68, 26.82], [10.65, 26.75], [10.68, 26.68], [11.03, 26.53], [11.25, 26.0], [11.03, 25.47], [10.5, 25.25], [9.97, 25.47], [9.82, 25.82], [9.75, 25.85], [9.5, 25.75], [8.97, 25.97], [8.82, 26.32], [8.47, 26.47], [8.32, 26.82], [7.97, 26.97], [7.82, 27.32], [7.75, 27.35], [7.5, 27.25], [7.25, 27.35], [7.0, 27.25], [6.47, 27.47]]]]}, "2010-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 27.47], [6.25, 28.0], [6.47, 28.53], [7.0, 28.75], [7.25, 28.65], [7.5, 28.75], [7.75, 28.65], [7.82, 28.68], [7.97, 29.03], [8.5, 29.25], [9.03, 29.03], [9.18, 28.68], [9.25, 28.65], [9.32, 28.68], [9.47, 29.03], [10.0, 29.25], [10.25, 29.15], [10.5, 29.25], [10.75, 29.15], [11.0, 29.25], 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maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.26173063366906, 22.997166512467288, 25.058306120394207]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.490610525373988, -6.300331095365488, -4.055713338518214]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.696119726463166, -6.9071843253976795, -4.416716078681986]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6982196307940276, -2.413183476755631, -1.5284210574033952]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0500913078632816, -2.5029172791852976, -1.6707610723419946]}}