{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:58.000163", "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": "2022-Jan-29_to_2022-Feb-02_37.5_-7.0"}, "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": 2022010001070}, "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 29 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 02 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 61456.27103740157}, "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": ["Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-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": -7.0}, "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": 37.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.75}, "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": -3.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, -6.0], [34.97, -5.47], [35.5, -5.25], [36.0, -5.46], 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[39.25, -7.5], [39.03, -8.03], [38.5, -8.25], [38.25, -8.15], [38.0, -8.25], [37.75, -8.15], [37.5, -8.25], [37.25, -8.15], [37.0, -8.25], [36.47, -8.03], [36.25, -7.5], [36.35, -7.25], [36.32, -7.18], [35.97, -7.03], [35.8, -6.62], [35.5, -6.75], [34.97, -6.53], [34.75, -6.0]]], [[[35.85, -4.25], [35.75, -4.0], [35.97, -3.47], [36.5, -3.25], [37.03, -3.47], [37.25, -4.0], [37.15, -4.25], [37.25, -4.5], [37.03, -5.03], [36.5, -5.25], [35.97, -5.03], [35.75, -4.5], [35.85, -4.25]]]]}, "2022-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.47, -6.53], [34.25, -6.0], [34.47, -5.47], [35.0, -5.25], [35.25, -5.35], [35.32, -5.32], [35.35, -5.25], [35.25, -5.0], [35.35, -4.75], [35.25, -4.5], [35.47, -3.97], [35.82, -3.82], [35.97, -3.47], [36.5, -3.25], [37.03, -3.47], [37.18, -3.82], [37.53, -3.97], [37.75, -4.5], [37.53, -5.03], [37.13, -5.2], [37.18, -5.32], [37.53, -5.47], [37.75, -6.0], [37.63, -6.3], [38.0, -6.46], [38.5, -6.25], [39.03, -6.47], [39.25, -7.0], 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[34.47, -6.53]]]]}, "2022-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.47, -6.53], [34.25, -6.0], [34.47, -5.47], [35.0, -5.25], [35.25, -5.35], [35.32, -5.32], [35.35, -5.25], [35.25, -5.0], [35.35, -4.75], [35.25, -4.5], [35.47, -3.97], [35.82, -3.82], [35.97, -3.47], [36.5, -3.25], [37.03, -3.47], [37.18, -3.82], [37.53, -3.97], [37.75, -4.5], [37.53, -5.03], [37.13, -5.2], [37.18, -5.32], [37.53, -5.47], [37.75, -6.0], [37.63, -6.3], [38.03, -6.47], [38.25, -7.0], [38.03, -7.53], [37.5, -7.75], [37.25, -7.65], [37.18, -7.68], [37.03, -8.03], [36.5, -8.25], [35.97, -8.03], [35.75, -7.5], [35.96, -7.0], [35.8, -6.62], [35.5, -6.75], [35.25, -6.65], [35.0, -6.75], [34.47, -6.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6034996451339794}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.10939193979097}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.62816993856802, 23.7425841319386, 22.693368434473882, 21.75600466102088, 21.371763013332895]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.745030132087606, 20.885583127622397, 19.808657702359085, 19.86851629401633, 19.64057957240192]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.998892179325798, -1.8987145456528178, -1.8634220707662479, -1.8950044054074198, -2.1229735255157114]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6034996451339794, -2.291127651719137, -2.6037388957763596, -2.6054720379980267, -3.0996023092734504]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.3987341021034627, -1.5357183567400512, -1.5076053091293466, -1.4992657820913147, -1.6800370694226825]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.006388002340241, -1.842122889411327, -2.084850785711516, -1.7725480591629603, -2.0825583593117374]}}