{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:40.305028", "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": "2018-May-15_to_2018-May-25_32.5_-3.5"}, "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": 2018050000652}, "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 15 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 25 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 11}, "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": 70943.95771956205}, "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": -3.5}, "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": 30.25}, "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": -4.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -3.53], [31.75, -3.0], [31.97, -2.47], [32.5, -2.25], [32.75, -2.35], [33.0, -2.25], [33.25, -2.35], [33.5, -2.25], [34.03, -2.47], [34.25, -3.0], [34.03, -3.53], [33.5, -3.75], [33.25, -3.65], [33.0, -3.75], [32.75, -3.65], [32.5, -3.75], [31.97, -3.53]]]]}, "2018-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -2.47], [32.5, -2.25], [32.75, -2.35], [33.0, -2.25], [33.25, -2.35], [33.5, -2.25], [33.75, -2.35], [34.0, -2.25], [34.25, -2.35], [34.5, -2.25], [35.03, -2.47], [35.25, -3.0], [35.03, -3.53], [34.68, -3.68], [34.65, -3.75], [34.75, -4.0], [34.65, -4.25], [34.75, -4.5], [34.53, -5.03], [34.0, -5.25], [33.75, -5.15], [33.5, -5.25], [32.97, -5.03], [32.82, -4.68], [32.47, -4.53], [32.32, -4.18], [31.97, -4.03], [31.75, -3.5], [31.85, -3.25], [31.75, -3.0], [31.97, -2.47]]]]}, "2018-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -2.47], [32.5, -2.25], [32.75, -2.35], [33.0, -2.25], [33.25, -2.35], [33.5, -2.25], [33.75, -2.35], [34.0, -2.25], [34.25, -2.35], [34.5, -2.25], [35.03, -2.47], [35.25, -3.0], [35.04, -3.5], [35.25, -4.0], [35.03, -4.53], [34.68, -4.68], [34.53, -5.03], [34.0, -5.25], [33.75, -5.15], [33.5, -5.25], [32.97, -5.03], [32.82, -4.68], [32.47, -4.53], [32.32, -4.18], [31.97, -4.03], [31.75, -3.5], [31.85, -3.25], [31.75, -3.0], [31.97, -2.47]]]]}, "2018-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.75, -3.5], [31.97, -2.97], [32.5, -2.75], [32.75, -2.85], [32.82, -2.82], [32.97, -2.47], [33.5, -2.25], [33.75, -2.35], [34.0, -2.25], [34.25, -2.35], [34.5, -2.25], [35.03, -2.47], [35.25, -3.0], [35.04, -3.5], [35.25, -4.0], [35.03, -4.53], [34.68, -4.68], [34.53, -5.03], [34.0, -5.25], [33.75, -5.15], [33.5, -5.25], [32.97, -5.03], [32.82, -4.68], [32.47, -4.53], [32.32, -4.18], [31.97, -4.03], [31.75, -3.5]]]]}, "2018-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.75, -3.5], [31.97, -2.97], [32.32, -2.82], [32.47, -2.47], [33.0, -2.25], [33.25, -2.35], [33.5, -2.25], [33.75, -2.35], [34.0, -2.25], [34.25, -2.35], [34.5, -2.25], [35.03, -2.47], [35.25, -3.0], [35.04, -3.5], [35.25, -4.0], [35.03, -4.53], [34.68, -4.68], [34.53, -5.03], [34.0, -5.25], [33.75, -5.15], [33.5, -5.25], [32.97, -5.03], [32.82, -4.68], [32.47, -4.53], [32.32, -4.18], [31.97, -4.03], [31.75, -3.5]]]]}, "2018-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.35, -3.25], [32.25, -3.0], [32.47, -2.47], [33.0, -2.25], [33.25, -2.35], [33.5, -2.25], [34.03, -2.47], [34.18, -2.82], [34.53, -2.97], [34.75, -3.5], [34.65, -3.75], [34.75, -4.0], [34.53, -4.53], [34.0, -4.75], [33.75, -4.65], [33.5, -4.75], [33.25, -4.65], [33.0, -4.75], [32.47, -4.53], [32.25, -4.0], [32.35, -3.75], [32.25, -3.5], [32.35, -3.25]]]]}, "2018-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.53, -3.47], [31.75, -4.0], [31.65, -4.25], [31.75, -4.5], [31.53, -5.03], [31.0, -5.25], [30.75, -5.15], [30.5, -5.25], [29.97, -5.03], [29.75, -4.5], [29.97, -3.97], [30.32, -3.82], [30.47, -3.47], [31.0, -3.25], [31.53, -3.47]]], [[[32.47, -3.53], [32.25, -3.0], [32.47, -2.47], [33.0, -2.25], [33.53, -2.47], [33.75, -3.0], [33.53, -3.53], [33.0, -3.75], [32.47, -3.53]]]]}, "2018-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.82, -3.32], [30.97, -2.97], [31.32, -2.82], [31.47, -2.47], [32.0, -2.25], [32.5, -2.46], [33.0, -2.25], [33.53, -2.47], [33.75, -3.0], [33.53, -3.53], [33.18, -3.68], [33.15, -3.75], [33.25, -4.0], [33.03, -4.53], [32.5, -4.75], [32.25, -4.65], [32.0, -4.75], [31.7, -4.62], [31.53, -5.03], [31.0, -5.25], [30.75, -5.15], [30.5, -5.25], [29.97, -5.03], [29.75, -4.5], [29.97, -3.97], [30.32, -3.82], [30.47, -3.47], [30.82, -3.32]]]]}, "2018-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.82, -3.32], [30.97, -2.97], [31.32, -2.82], [31.47, -2.47], [32.0, -2.25], [32.53, -2.47], [32.68, -2.82], [33.03, -2.97], [33.25, -3.5], [33.15, -3.75], [33.25, -4.0], [33.03, -4.53], [32.5, -4.75], [32.25, -4.65], [32.0, -4.75], [31.7, -4.62], [31.53, -5.03], [31.0, -5.25], [30.75, -5.15], [30.5, -5.25], [29.97, -5.03], [29.75, -4.5], [29.97, -3.97], [30.32, -3.82], [30.47, -3.47], [30.82, -3.32]]]]}, "2018-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.32, -2.82], [31.47, -2.47], [32.0, -2.25], [32.53, -2.47], [32.68, -2.82], [33.03, -2.97], [33.25, -3.5], [33.15, -3.75], [33.25, -4.0], [33.03, -4.53], [32.5, -4.75], [32.25, -4.65], [32.0, -4.75], [31.5, -4.54], [31.0, -4.75], [30.47, -4.53], [30.25, -4.0], [30.47, -3.47], [30.82, -3.32], [30.97, -2.97], [31.32, -2.82]]]]}, "2018-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.0, -3.25], [31.53, -3.47], [31.75, -4.0], [31.53, -4.53], [31.0, -4.75], [30.47, -4.53], [30.25, -4.0], [30.47, -3.47], [31.0, -3.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0739055935859483}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8648196993579227}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.202335848261384, 21.14896452699685, 21.75824649113639, 21.933010874252716, 21.810989760109806, 22.121809558115274, 21.238622272424493, 21.346725632424977, 21.36624812232907, 21.32731262984555, 21.210629888070173]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.73700346924676, 19.712899528562332, 20.3240862721878, 20.46306393290655, 20.70393229785759, 21.576538777225892, 20.86653222385422, 20.71117645920947, 20.840941436469734, 20.88842218967858, 21.210629888070173]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9025148916466037, -2.5200297417309026, -1.9794679819597414, -1.9077316336381456, -1.9841460888550029, -1.9308132284004031, -1.285490094169191, -1.4668324878505985, -1.3683332852212022, -1.5632078764024138, -0.9795474830482362]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9494764565800438, -3.0739055935859483, -2.4146000343300784, -2.6248597685068944, -2.4770442211894306, -2.194963062394663, -1.7352622083027427, -1.8884979235369315, -2.0256747249292175, -2.13060728569792, -0.9795474830482362]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5135974137736437, -2.0449086372306526, -1.63809771025894, -1.6094673660335457, -1.6824838081670734, -1.6459877809971701, -1.4767264184344233, -1.5926335705222374, -1.528797811175638, -1.7150440270428307, -1.3379009773474393]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5876886448310255, -2.297892870066421, -1.9379498615212565, -2.093170620899271, -1.985255934199739, -1.7847148585844943, -1.569348642356575, -1.8646682548561466, -1.784670122159972, -2.0762887038380975, -1.3379009773474393]}}