{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:14.270762", "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": "2013-Jan-06_to_2013-Jan-13_35.5_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": 2013010000277}, "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 06 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 13 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 166603.60575399286}, "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", "Uganda"]}, "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": 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": 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": 32.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.25}, "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": {"2013-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, 3.03], [32.5, 3.25], [32.75, 3.15], [32.82, 3.18], [32.97, 3.53], [33.5, 3.75], [34.03, 3.53], [34.25, 3.0], [34.15, 2.75], [34.18, 2.68], [34.53, 2.53], [34.75, 2.0], [34.53, 1.47], [34.0, 1.25], [33.75, 1.35], [33.5, 1.25], [33.25, 1.35], [33.0, 1.25], [32.75, 1.35], [32.5, 1.25], [31.97, 1.47], [31.75, 2.0], [31.85, 2.25], [31.75, 2.5], [31.97, 3.03]]]]}, "2013-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, 3.03], [32.5, 3.25], [32.75, 3.15], [32.82, 3.18], [32.97, 3.53], [33.5, 3.75], [34.03, 3.53], [34.25, 3.0], [34.15, 2.75], [34.18, 2.68], [34.53, 2.53], [34.68, 2.18], [35.03, 2.03], [35.25, 1.5], [35.03, 0.97], [34.5, 0.75], [33.97, 0.97], [33.82, 1.32], [33.75, 1.35], [33.5, 1.25], [33.25, 1.35], [33.0, 1.25], [32.75, 1.35], [32.5, 1.25], [31.97, 1.47], [31.75, 2.0], [31.85, 2.25], [31.75, 2.5], [31.97, 3.03]]]]}, "2013-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, 3.03], [32.5, 3.25], [32.75, 3.15], [32.82, 3.18], [32.85, 3.25], [32.75, 3.5], [32.85, 3.75], [32.75, 4.0], [32.97, 4.53], [33.32, 4.68], [33.47, 5.03], [34.0, 5.25], [34.25, 5.15], [34.32, 5.18], [34.47, 5.53], [35.0, 5.75], [35.25, 5.65], [35.5, 5.75], [36.03, 5.53], [36.18, 5.18], [36.25, 5.15], [36.5, 5.25], [36.75, 5.15], [36.82, 5.18], [36.97, 5.53], [37.5, 5.75], [38.03, 5.53], [38.18, 5.18], [38.53, 5.03], [38.75, 4.5], [38.65, 4.25], [38.75, 4.0], [38.53, 3.47], [38.18, 3.32], [38.03, 2.97], [37.5, 2.75], [37.25, 2.85], [37.0, 2.75], [36.7, 2.88], [36.65, 2.75], [36.75, 2.5], [36.65, 2.25], [36.75, 2.0], [36.53, 1.47], [36.0, 1.25], [35.75, 1.35], [35.5, 1.25], [35.25, 1.35], [35.18, 1.32], [35.03, 0.97], [34.5, 0.75], [33.97, 0.97], [33.82, 1.32], [33.75, 1.35], [33.68, 1.32], [33.53, 0.97], [33.0, 0.75], [32.47, 0.97], [32.32, 1.32], [31.97, 1.47], [31.75, 2.0], [31.85, 2.25], [31.75, 2.5], [31.97, 3.03]]]]}, "2013-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, 3.03], [32.5, 3.25], [32.75, 3.15], [32.82, 3.18], [32.85, 3.25], [32.75, 3.5], [32.85, 3.75], [32.75, 4.0], [32.97, 4.53], [33.32, 4.68], [33.35, 4.75], [33.25, 5.0], [33.47, 5.53], [34.0, 5.75], [34.5, 5.54], [35.0, 5.75], [35.25, 5.65], [35.5, 5.75], [36.03, 5.53], [36.18, 5.18], [36.25, 5.15], [36.5, 5.25], [36.75, 5.15], [36.82, 5.18], [36.97, 5.53], [37.5, 5.75], [38.03, 5.53], [38.18, 5.18], [38.53, 5.03], [38.75, 4.5], [38.65, 4.25], [38.75, 4.0], [38.53, 3.47], [38.18, 3.32], [38.03, 2.97], [37.5, 2.75], [37.25, 2.85], [37.0, 2.75], [36.7, 2.88], [36.65, 2.75], [36.75, 2.5], [36.65, 2.25], [36.75, 2.0], [36.53, 1.47], [36.0, 1.25], [35.75, 1.35], [35.5, 1.25], [35.25, 1.35], [35.18, 1.32], [35.03, 0.97], [34.5, 0.75], [33.97, 0.97], [33.82, 1.32], [33.75, 1.35], [33.68, 1.32], [33.53, 0.97], [33.0, 0.75], [32.47, 0.97], [32.32, 1.32], [31.97, 1.47], [31.75, 2.0], [31.85, 2.25], [31.75, 2.5], [31.97, 3.03]]]]}, "2013-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.32, 2.68], [33.35, 2.75], [33.32, 2.82], [32.97, 2.97], [32.75, 3.5], [32.85, 3.75], [32.75, 4.0], [32.97, 4.53], [33.32, 4.68], [33.35, 4.75], [33.25, 5.0], [33.47, 5.53], [34.0, 5.75], [34.5, 5.54], [35.0, 5.75], [35.25, 5.65], [35.5, 5.75], [36.03, 5.53], [36.18, 5.18], [36.25, 5.15], [36.5, 5.25], [36.75, 5.15], [36.82, 5.18], [36.97, 5.53], [37.5, 5.75], [38.03, 5.53], [38.18, 5.18], [38.53, 5.03], [38.75, 4.5], [38.65, 4.25], [38.75, 4.0], [38.53, 3.47], [38.18, 3.32], [38.03, 2.97], [37.5, 2.75], [37.25, 2.85], [37.0, 2.75], [36.7, 2.88], [36.65, 2.75], [36.75, 2.5], [36.65, 2.25], [36.75, 2.0], [36.53, 1.47], [36.0, 1.25], [35.75, 1.35], [35.5, 1.25], [35.25, 1.35], [35.0, 1.25], [34.75, 1.35], [34.5, 1.25], [34.0, 1.46], [33.68, 1.32], [33.53, 0.97], [33.0, 0.75], [32.47, 0.97], [32.25, 1.5], [32.47, 2.03], [32.82, 2.18], [32.97, 2.53], [33.32, 2.68]]]]}, "2013-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, 5.53], [34.0, 5.75], [34.53, 5.53], [34.75, 5.0], [34.65, 4.75], [34.68, 4.68], [34.75, 4.65], [35.0, 4.75], [35.25, 4.65], [35.5, 4.75], [36.03, 4.53], [36.25, 4.0], [36.15, 3.75], [36.25, 3.5], [36.15, 3.25], [36.18, 3.18], [36.53, 3.03], [36.75, 2.5], [36.53, 1.97], [36.0, 1.75], [35.75, 1.85], [35.5, 1.75], [34.97, 1.97], [34.82, 2.32], [34.75, 2.35], [34.5, 2.25], [33.97, 2.47], [33.75, 3.0], [33.85, 3.25], [33.82, 3.32], [33.75, 3.35], [33.5, 3.25], [32.97, 3.47], [32.75, 4.0], [32.97, 4.53], [33.32, 4.68], [33.35, 4.75], [33.25, 5.0], [33.47, 5.53]]], [[[36.97, 3.47], [36.75, 4.0], [36.97, 4.53], [37.5, 4.75], [38.03, 4.53], [38.25, 4.0], [38.03, 3.47], [37.5, 3.25], [36.97, 3.47]]]]}, "2013-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 2.97], [34.75, 3.5], [34.97, 4.03], [35.5, 4.25], [36.03, 4.03], [36.25, 3.5], [36.03, 2.97], [35.5, 2.75], [34.97, 2.97]]], [[[36.97, 3.47], [36.75, 4.0], [36.97, 4.53], [37.5, 4.75], [38.03, 4.53], [38.25, 4.0], [38.03, 3.47], [37.5, 3.25], [36.97, 3.47]]]]}, "2013-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.5, 4.25], [36.03, 4.03], [36.25, 3.5], [36.03, 2.97], [35.5, 2.75], [34.97, 2.97], [34.75, 3.5], [34.97, 4.03], [35.5, 4.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.002675930689293}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7503114776962487}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.410155486466863, 23.40300623202745, 24.532201850716092, 23.735334661515253, 25.535645961159503, 25.965706989378077, 27.46077026137766, 27.445424271539935]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.031520654062376, 22.76762633458992, 20.973882136746795, 20.50166511920031, 21.897476813815274, 22.162221719329523, 27.050752348138758, 27.445424271539935]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.078502468973383, -1.944418636535627, -2.8484485076933863, -3.6476470396833958, -2.195391124137894, -1.8946138096238239, -1.7670651669222366, -2.0487300870892113]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.802648787812359, -2.439945610494931, -4.032187798474524, -5.002675930689293, -3.407319631442647, -2.46503268439227, -1.864097136739474, -2.0487300870892113]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.56800990695969, -1.5020514407151782, -2.5088530929230384, -3.068071245575019, -1.7987509388439649, -1.5085645749687828, -1.2702843002898612, -1.4483231989514431]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0922381014363873, -1.8318804760098797, -3.3679404702383855, -4.155464139542023, -2.42057873077661, -1.7667639846851704, -1.3088024365891802, -1.4483231989514431]}}