{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:50.921518", "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-Jun-01_to_2019-Jun-05_35.5_5.0"}, "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": 2019060000049}, "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": "June 01 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 05 2019"}, "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": 86348.4388627019}, "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": ["Ethiopia", "Kenya", "South Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "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": 5.0}, "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": 35.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.5\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": 37.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.5, 5.75], [36.03, 5.53], [36.25, 5.0], [36.03, 4.47], [35.5, 4.25], [34.97, 4.47], [34.75, 5.0], [34.97, 5.53], [35.5, 5.75]]]]}, "2019-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 0.97], [35.25, 1.5], [35.47, 2.03], [36.0, 2.25], [36.53, 2.03], [36.75, 1.5], [36.53, 0.97], [36.0, 0.75], [35.47, 0.97]]], [[[34.97, 4.47], [34.75, 5.0], [34.97, 5.53], [35.5, 5.75], [36.03, 5.53], [36.25, 5.0], [36.03, 4.47], [35.5, 4.25], [34.97, 4.47]]]]}, "2019-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.46, 4.5], [34.25, 5.0], [34.35, 5.25], [34.25, 5.5], [34.47, 6.03], [35.0, 6.25], [35.25, 6.15], [35.32, 6.18], [35.47, 6.53], [36.0, 6.75], [36.53, 6.53], [36.75, 6.0], [36.65, 5.75], [36.68, 5.68], [36.75, 5.65], [37.0, 5.75], [37.53, 5.53], [37.75, 5.0], [37.54, 4.5], [37.75, 4.0], [37.53, 3.47], [37.18, 3.32], [37.15, 3.25], [37.25, 3.0], [37.15, 2.75], [37.25, 2.5], [37.15, 2.25], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.03, 0.97], [36.68, 0.82], [36.65, 0.75], [36.75, 0.5], [36.53, -0.03], [36.0, -0.25], [35.47, -0.03], [35.25, 0.5], [35.35, 0.75], [35.25, 1.0], [35.35, 1.25], [35.25, 1.5], [35.35, 1.75], [35.25, 2.0], [35.35, 2.25], [35.25, 2.5], [35.35, 2.75], [35.32, 2.82], [35.25, 2.85], [35.0, 2.75], [34.47, 2.97], [34.25, 3.5], [34.35, 3.75], [34.25, 4.0], [34.46, 4.5]]]]}, "2019-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.46, 4.5], [34.25, 5.0], [34.35, 5.25], [34.25, 5.5], [34.47, 6.03], [35.0, 6.25], [35.25, 6.15], [35.32, 6.18], [35.47, 6.53], [36.0, 6.75], [36.53, 6.53], [36.75, 6.0], [36.65, 5.75], [36.68, 5.68], [36.75, 5.65], [37.0, 5.75], [37.53, 5.53], [37.75, 5.0], [37.54, 4.5], [37.75, 4.0], [37.53, 3.47], [37.18, 3.32], [37.15, 3.25], [37.25, 3.0], [37.15, 2.75], [37.25, 2.5], [37.15, 2.25], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.03, 0.97], [36.68, 0.82], [36.65, 0.75], [36.75, 0.5], [36.53, -0.03], [36.0, -0.25], [35.47, -0.03], [35.25, 0.5], [35.35, 0.75], [35.25, 1.0], [35.35, 1.25], [35.25, 1.5], [35.35, 1.75], [35.25, 2.0], [35.35, 2.25], [35.25, 2.5], [35.35, 2.75], [35.32, 2.82], [35.25, 2.85], [35.0, 2.75], [34.47, 2.97], [34.25, 3.5], [34.35, 3.75], [34.25, 4.0], [34.46, 4.5]]]]}, "2019-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.46, 4.5], [34.25, 5.0], [34.35, 5.25], [34.25, 5.5], [34.47, 6.03], [35.0, 6.25], [35.25, 6.15], [35.32, 6.18], [35.47, 6.53], [36.0, 6.75], [36.53, 6.53], [36.75, 6.0], [36.65, 5.75], [36.68, 5.68], [36.75, 5.65], [37.0, 5.75], [37.53, 5.53], [37.75, 5.0], [37.54, 4.5], [37.75, 4.0], [37.53, 3.47], [37.18, 3.32], [37.15, 3.25], [37.25, 3.0], [37.15, 2.75], [37.25, 2.5], [37.15, 2.25], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.03, 0.97], [36.68, 0.82], [36.65, 0.75], [36.75, 0.5], [36.53, -0.03], [36.0, -0.25], [35.47, -0.03], [35.25, 0.5], [35.35, 0.75], [35.25, 1.0], [35.46, 1.5], [35.25, 2.0], [35.35, 2.25], [35.25, 2.5], [35.35, 2.75], [35.32, 2.82], [35.25, 2.85], [35.0, 2.75], [34.47, 2.97], [34.25, 3.5], [34.35, 3.75], [34.25, 4.0], [34.46, 4.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.705016051175278}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.2296949927652046}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.64942970563436, 26.805332664477646, 24.77635122554807, 24.8254804339511, 26.255345426188057]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.64942970563436, 25.890233314285638, 22.111747862701066, 21.879225681065066, 22.006282444601823]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1175245289564373, -2.0139165928941054, -3.840282988187115, -3.7124939747013905, -2.227061359340178]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1175245289564373, -2.0379210260738887, -5.705016051175278, -5.388449602688809, -3.07835272588585]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5896158031799072, -1.4257588515163144, -2.9801423824340882, -2.7528683550457442, -1.5674327976288305]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5896158031799072, -1.4411612542895573, -3.9105823292854796, -4.037487616965895, -1.8355227174947624]}}