{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:21.608871", "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": "2024-Oct-17_to_2024-Oct-21_33.5_-7.5"}, "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": 2024100000306}, "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 17 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 21 2024"}, "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": 52204.45707352835}, "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": -7.5}, "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": 33.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, -8.03], [32.25, -7.5], [32.47, -6.97], [33.0, -6.75], [33.25, -6.85], [33.5, -6.75], [34.03, -6.97], [34.25, -7.5], [34.03, -8.03], [33.5, -8.25], [33.25, -8.15], [33.0, -8.25], [32.47, -8.03]]]]}, "2024-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, -6.0], [30.97, -5.47], [31.5, -5.25], [31.75, -5.35], [32.0, -5.25], [32.25, -5.35], [32.5, -5.25], [32.75, -5.35], [33.0, -5.25], [33.53, -5.47], [33.75, -6.0], [33.65, -6.25], [33.68, -6.32], [34.03, -6.47], [34.25, -7.0], [34.15, -7.25], [34.25, -7.5], [34.03, -8.03], [33.68, -8.18], [33.53, -8.53], [33.0, -8.75], [32.75, -8.65], [32.5, -8.75], [31.97, -8.53], [31.75, -8.0], [31.85, -7.75], [31.75, -7.5], [31.88, -7.2], [31.47, -7.03], [31.32, -6.68], [30.97, -6.53], [30.75, -6.0]]]]}, "2024-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.5, -4.75], [31.75, -4.85], [32.0, -4.75], [32.25, -4.85], [32.5, -4.75], [32.75, -4.85], [33.0, -4.75], [33.53, -4.97], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.68, -6.32], [34.03, -6.47], [34.25, -7.0], [34.15, -7.25], [34.25, -7.5], [34.03, -8.03], [33.68, -8.18], [33.53, -8.53], [33.0, -8.75], [32.75, -8.65], [32.5, -8.75], [31.97, -8.53], [31.75, -8.0], [31.85, -7.75], [31.75, -7.5], [31.88, -7.2], [31.47, -7.03], [31.32, -6.68], [31.25, -6.65], [31.0, -6.75], [30.47, -6.53], [30.25, -6.0], [30.47, -5.47], [30.82, -5.32], [30.97, -4.97], [31.5, -4.75]]]]}, "2024-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.5, -4.75], [31.75, -4.85], [32.0, -4.75], [32.25, -4.85], [32.5, -4.75], [32.75, -4.85], [33.0, -4.75], [33.53, -4.97], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.68, -6.32], [34.03, -6.47], [34.25, -7.0], [34.15, -7.25], [34.25, -7.5], [34.03, -8.03], [33.68, -8.18], [33.53, -8.53], [33.0, -8.75], [32.75, -8.65], [32.5, -8.75], [31.97, -8.53], [31.75, -8.0], [31.85, -7.75], [31.75, -7.5], [31.88, -7.2], [31.47, -7.03], [31.32, -6.68], [31.25, -6.65], [31.0, -6.75], [30.47, -6.53], [30.25, -6.0], [30.47, -5.47], [30.82, -5.32], [30.97, -4.97], [31.5, -4.75]]]]}, "2024-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.5, -4.75], [31.75, -4.85], [32.0, -4.75], [32.25, -4.85], [32.5, -4.75], [32.75, -4.85], [33.0, -4.75], [33.53, -4.97], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.53, -6.53], [33.0, -6.75], [32.75, -6.65], [32.68, -6.68], [32.53, -7.03], [32.0, -7.25], [31.47, -7.03], [31.32, -6.68], [31.25, -6.65], [31.0, -6.75], [30.47, -6.53], [30.25, -6.0], [30.47, -5.47], [30.82, -5.32], [30.97, -4.97], [31.5, -4.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.830555600767298}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.477333837176693}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.92701873779299, 23.757477908664328, 23.851125859279307, 22.415079258937453, 23.792502848307322]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.219092305501306, 20.9261248270671, 21.82503153483077, 20.287666575113974, 22.118178304036462]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7918925329112199, -2.1089943707216086, -1.9916551343469764, -3.4350453277570856, -2.253973718599741]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8335047462702505, -3.159733898699983, -2.7887295457008463, -4.830555600767298, -2.8362689950265576]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5474911475683384, -1.7645485897315274, -1.5950024274034258, -2.669721915228957, -1.6173957998547241]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6204530764814193, -2.8136547376654653, -2.080577046715566, -3.2923999043554466, -2.051416930148016]}}