{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:54.658306", "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-20_to_2019-Jan-23_32.5_-19.5"}, "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": 2019010000643}, "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 20 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 23 2019"}, "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": 136500.58464643874}, "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": ["Mozambique", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-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": -19.5}, "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": 32.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.0, -18.75], [30.25, -18.85], [30.32, -18.82], [30.47, -18.47], [30.82, -18.32], [30.97, -17.97], [31.32, -17.82], [31.47, -17.47], [32.0, -17.25], [32.53, -17.47], [32.68, -17.82], [33.03, -17.97], [33.2, -18.37], [33.32, -18.32], [33.47, -17.97], [34.0, -17.75], [34.53, -17.97], [34.75, -18.5], [34.65, -18.75], [34.75, -19.0], [34.65, -19.25], [34.75, -19.5], [34.63, -19.8], [35.03, -19.97], [35.25, -20.5], [35.03, -21.03], [34.68, -21.18], [34.53, -21.53], [34.18, -21.68], [34.03, -22.03], [33.5, -22.25], [33.25, -22.15], [33.0, -22.25], [32.75, -22.15], [32.68, -22.18], [32.53, -22.53], [32.0, -22.75], [31.47, -22.53], [31.25, -22.0], [31.35, -21.75], [31.32, -21.68], [30.97, -21.53], [30.82, -21.18], [30.47, -21.03], [30.32, -20.68], [30.25, -20.65], [30.0, -20.75], [29.75, -20.65], [29.5, -20.75], [28.97, -20.53], [28.75, -20.0], [28.97, -19.47], [29.32, -19.32], [29.47, -18.97], [30.0, -18.75]]]]}, "2019-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.0, -18.75], [30.25, -18.85], [30.32, -18.82], [30.47, -18.47], [30.82, -18.32], [30.97, -17.97], [31.32, -17.82], [31.47, -17.47], [32.0, -17.25], [32.53, -17.47], [32.68, -17.82], [33.03, -17.97], [33.2, -18.37], [33.32, -18.32], [33.47, -17.97], [34.0, -17.75], [34.53, -17.97], [34.75, -18.5], [34.65, -18.75], [34.75, -19.0], [34.65, -19.25], [34.75, -19.5], [34.63, -19.8], [35.03, -19.97], [35.25, -20.5], [35.03, -21.03], [34.68, -21.18], [34.53, -21.53], [34.18, -21.68], [34.03, -22.03], [33.5, -22.25], [33.25, -22.15], [33.0, -22.25], [32.75, -22.15], [32.68, -22.18], [32.53, -22.53], [32.0, -22.75], [31.47, -22.53], [31.25, -22.0], [31.35, -21.75], [31.32, -21.68], [30.97, -21.53], [30.82, -21.18], [30.47, -21.03], [30.32, -20.68], [30.25, -20.65], [30.0, -20.75], [29.75, -20.65], [29.5, -20.75], [28.97, -20.53], [28.75, -20.0], [28.97, -19.47], [29.32, -19.32], [29.47, -18.97], [30.0, -18.75]]]]}, "2019-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.0, -18.75], [30.25, -18.85], [30.32, -18.82], [30.47, -18.47], [30.82, -18.32], [30.97, -17.97], [31.32, -17.82], [31.47, -17.47], [32.0, -17.25], [32.53, -17.47], [32.68, -17.82], [33.03, -17.97], [33.2, -18.37], [33.32, -18.32], [33.47, -17.97], [34.0, -17.75], [34.53, -17.97], [34.75, -18.5], [34.65, -18.75], [34.75, -19.0], [34.65, -19.25], [34.75, -19.5], [34.63, -19.8], [35.03, -19.97], [35.25, -20.5], [35.03, -21.03], [34.68, -21.18], [34.53, -21.53], [34.18, -21.68], [34.03, -22.03], [33.5, -22.25], [33.25, -22.15], [33.0, -22.25], [32.75, -22.15], [32.68, -22.18], [32.53, -22.53], [32.0, -22.75], [31.47, -22.53], [31.25, -22.0], [31.35, -21.75], [31.32, -21.68], [30.97, -21.53], [30.82, -21.18], [30.47, -21.03], [30.32, -20.68], [30.25, -20.65], [30.0, -20.75], [29.75, -20.65], [29.5, -20.75], [28.97, -20.53], [28.75, -20.0], [28.97, -19.47], [29.32, -19.32], [29.47, -18.97], [30.0, -18.75]]]]}, "2019-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -18.97], [32.5, -18.75], [33.03, -18.97], [33.25, -19.5], [33.15, -19.75], [33.25, -20.0], [33.03, -20.53], [32.5, -20.75], [31.97, -20.53], [31.75, -20.0], [31.85, -19.75], [31.75, -19.5], [31.97, -18.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.294715022128798}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7700138911569696}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.847288372374635, 19.477091711607272, 20.425588744359743, 21.096629081346464]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.91823704393431, 13.77179900007502, 15.714122131245347, 21.051312928718346]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.088961198741422, -4.54951616164101, -3.727078904529586, -2.465420992290916]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.148204351182983, -6.294715022128798, -5.081426034254662, -2.513712385268093]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7143905702094275, -2.6571547706473138, -2.19677061450445, -1.402460797220619]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.371281342030514, -4.387088437123017, -3.0650213978498155, -1.4430768799132319]}}