{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:58.859810", "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-Aug-10_to_2022-Aug-14_39.0_-0.5"}, "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": 2022080000488}, "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": "August 10 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 14 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": 71078.19724568554}, "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": ["Kenya"]}, "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": -0.5}, "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": 39.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 37.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 1.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.85, -1.25], [37.75, -1.0], [37.85, -0.75], [37.75, -0.5], [37.97, 0.03], [38.32, 0.18], [38.35, 0.25], [38.25, 0.5], [38.47, 1.03], [38.82, 1.18], [38.85, 1.25], [38.75, 1.5], [38.97, 2.03], [39.5, 2.25], [40.03, 2.03], [40.25, 1.5], [40.15, 1.25], [40.25, 1.0], [40.15, 0.75], [40.25, 0.5], [40.15, 0.25], [40.18, 0.18], [40.53, 0.03], [40.75, -0.5], [40.54, -1.0], [40.75, -1.5], [40.53, -2.03], [40.18, -2.18], [40.15, -2.25], [40.25, -2.5], [40.03, -3.03], [39.5, -3.25], [38.97, -3.03], [38.82, -2.68], [38.75, -2.65], [38.5, -2.75], [37.97, -2.53], [37.75, -2.0], [37.85, -1.75], [37.75, -1.5], [37.85, -1.25]]]]}, "2022-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.0, 0.75], [38.3, 0.62], [38.47, 1.03], [38.82, 1.18], [38.85, 1.25], [38.75, 1.5], [38.97, 2.03], [39.5, 2.25], [40.03, 2.03], [40.25, 1.5], [40.15, 1.25], [40.25, 1.0], [40.15, 0.75], [40.25, 0.5], [40.15, 0.25], [40.18, 0.18], [40.53, 0.03], [40.75, -0.5], [40.54, -1.0], [40.75, -1.5], [40.53, -2.03], [40.18, -2.18], [40.15, -2.25], [40.25, -2.5], [40.03, -3.03], [39.5, -3.25], [38.97, -3.03], [38.82, -2.68], [38.75, -2.65], [38.5, -2.75], [37.97, -2.53], [37.75, -2.0], [37.85, -1.75], [37.75, -1.5], [37.85, -1.25], [37.8, -1.12], [37.5, -1.25], [36.97, -1.03], [36.75, -0.5], [36.97, 0.03], [37.32, 0.18], [37.47, 0.53], [38.0, 0.75]]]]}, "2022-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.0, 0.75], [38.3, 0.62], [38.47, 1.03], [38.82, 1.18], [38.85, 1.25], [38.75, 1.5], [38.97, 2.03], [39.5, 2.25], [40.03, 2.03], [40.25, 1.5], [40.15, 1.25], [40.25, 1.0], [40.15, 0.75], [40.25, 0.5], [40.15, 0.25], [40.18, 0.18], [40.53, 0.03], [40.75, -0.5], [40.54, -1.0], [40.75, -1.5], [40.53, -2.03], [40.18, -2.18], [40.15, -2.25], [40.25, -2.5], [40.03, -3.03], [39.5, -3.25], [38.97, -3.03], [38.82, -2.68], [38.75, -2.65], [38.5, -2.75], [37.97, -2.53], [37.75, -2.0], [37.85, -1.75], [37.75, -1.5], [37.85, -1.25], [37.8, -1.12], [37.5, -1.25], [36.97, -1.03], [36.75, -0.5], [36.97, 0.03], [37.32, 0.18], [37.47, 0.53], [38.0, 0.75]]]]}, "2022-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.0, 0.75], [38.3, 0.62], [38.47, 1.03], [39.0, 1.25], [39.53, 1.03], [39.68, 0.68], [40.03, 0.53], [40.25, 0.0], [40.15, -0.25], [40.25, -0.5], [40.03, -1.03], [39.68, -1.18], [39.53, -1.53], [39.0, -1.75], [38.47, -1.53], [38.32, -1.18], [38.0, -1.04], [37.5, -1.25], [36.97, -1.03], [36.75, -0.5], [36.97, 0.03], [37.32, 0.18], [37.47, 0.53], [38.0, 0.75]]]]}, "2022-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.25, 0.0], [37.47, 0.53], [38.0, 0.75], [38.3, 0.62], [38.47, 1.03], [39.0, 1.25], [39.53, 1.03], [39.68, 0.68], [40.03, 0.53], [40.25, 0.0], [40.15, -0.25], [40.25, -0.5], [40.03, -1.03], [39.68, -1.18], [39.53, -1.53], [39.0, -1.75], [38.47, -1.53], [38.32, -1.18], [37.97, -1.03], [37.82, -0.68], [37.47, -0.53], [37.25, 0.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.9491372875588127}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3746937803782746}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.46948682767652, 23.750207492913944, 24.071808409150833, 23.514880611384058, 24.037784970420603]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.8121295063076, 17.08467507137601, 17.246043562262287, 16.824214806727753, 22.22275467668686]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.25889255755621, -1.5901022025690084, -1.2756029042729784, -1.2307370213933508, -1.5062103991485998]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5997177807273033, -1.9491372875588127, -1.5893211116901966, -1.6627589009366375, -1.761203786720273]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5855167504732017, -1.973961392120462, -1.5919069635596663, -1.4900135501775083, -1.8736296933715013]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9001396203510026, -2.2514347322061092, -1.8104567717575957, -1.9534222954459048, -2.065829512010331]}}