{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:54.699553", "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-Jan-28_to_2018-Jan-31_36.5_15.5"}, "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": 2018010000980}, "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 28 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 31 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 53554.526775982325}, "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": ["Eritrea", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "Sahara"]}, "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": 15.5}, "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": 36.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.25}, "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": 14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.35, 16.75], [35.25, 17.0], [35.47, 17.53], [36.0, 17.75], [36.53, 17.53], [36.68, 17.18], [37.0, 17.04], [37.5, 17.25], [38.03, 17.03], [38.25, 16.5], [38.15, 16.25], [38.25, 16.0], [38.15, 15.75], [38.25, 15.5], [38.03, 14.97], [37.5, 14.75], [37.25, 14.85], [37.0, 14.75], [36.75, 14.85], [36.5, 14.75], [35.97, 14.97], [35.82, 15.32], [35.47, 15.47], [35.25, 16.0], [35.35, 16.25], [35.25, 16.5], [35.35, 16.75]]]]}, "2018-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 16.03], [35.32, 16.18], [35.35, 16.25], [35.25, 16.5], [35.35, 16.75], [35.25, 17.0], [35.47, 17.53], [36.0, 17.75], [36.53, 17.53], [36.68, 17.18], [37.0, 17.04], [37.5, 17.25], [38.03, 17.03], [38.25, 16.5], [38.15, 16.25], [38.18, 16.18], [38.53, 16.03], [38.75, 15.5], [38.53, 14.97], [38.0, 14.75], [37.75, 14.85], [37.5, 14.75], [37.25, 14.85], [37.18, 14.82], [37.03, 14.47], [36.68, 14.32], [36.53, 13.97], [36.0, 13.75], [35.47, 13.97], [35.32, 14.32], [34.97, 14.47], [34.75, 15.0], [34.85, 15.25], [34.75, 15.5], [34.97, 16.03]]]]}, "2018-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 16.03], [35.32, 16.18], [35.35, 16.25], [35.25, 16.5], [35.35, 16.75], [35.25, 17.0], [35.47, 17.53], [36.0, 17.75], [36.53, 17.53], [36.68, 17.18], [37.0, 17.04], [37.5, 17.25], [38.03, 17.03], [38.25, 16.5], [38.15, 16.25], [38.18, 16.18], [38.53, 16.03], [38.75, 15.5], [38.53, 14.97], [38.0, 14.75], [37.75, 14.85], [37.5, 14.75], [37.25, 14.85], [37.18, 14.82], [37.03, 14.47], [36.68, 14.32], [36.53, 13.97], [36.0, 13.75], [35.47, 13.97], [35.32, 14.32], [34.97, 14.47], [34.75, 15.0], [34.85, 15.25], [34.75, 15.5], [34.97, 16.03]]]]}, "2018-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 16.03], [35.32, 16.18], [35.47, 16.53], [36.0, 16.75], [36.25, 16.65], [36.5, 16.75], [36.75, 16.65], [36.82, 16.68], [36.97, 17.03], [37.5, 17.25], [38.03, 17.03], [38.25, 16.5], [38.15, 16.25], [38.18, 16.18], [38.53, 16.03], [38.75, 15.5], [38.53, 14.97], [38.0, 14.75], [37.75, 14.85], [37.5, 14.75], [37.25, 14.85], [37.18, 14.82], [37.03, 14.47], [36.68, 14.32], [36.53, 13.97], [36.0, 13.75], [35.47, 13.97], [35.32, 14.32], [34.97, 14.47], [34.75, 15.0], [34.85, 15.25], [34.75, 15.5], [34.97, 16.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.3801553762672825}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.4965101923499198}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.092298573679955, 21.767580663081105, 21.719178259523403, 22.052750062739676]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.479298390688257, 20.769370099712035, 20.57861642149527, 20.90583814618327]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.4899978644543292, -3.4733546374546145, -3.59710483683352, -3.408358991967399]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.8083500872328386, -3.9834111545517885, -4.3801553762672825, -4.066719319225342]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.391437428939967, -1.406027624136718, -1.5006209550228684, -1.4521639239685054]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5532944626440768, -1.5285368149287462, -1.7986128251418967, -1.6965092178945098]}}