{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:23.055689", "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": "2017-Nov-06_to_2017-Nov-09_33.0_-8.5"}, "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": 2017110000271}, "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": "November 06 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 09 2017"}, "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": 64463.254330948235}, "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": -8.5}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.85, -5.75], [30.75, -5.5], [30.97, -4.97], [31.32, -4.82], [31.47, -4.47], [32.0, -4.25], [32.25, -4.35], [32.5, -4.25], [32.75, -4.35], [33.0, -4.25], [33.53, -4.47], [33.75, -5.0], [33.53, -5.53], [33.18, -5.68], [33.15, -5.75], [33.25, -6.0], [33.15, -6.25], [33.25, -6.5], [33.15, -6.75], [33.18, -6.82], [33.25, -6.85], [33.5, -6.75], [34.03, -6.97], [34.25, -7.5], [34.04, -8.0], [34.25, -8.5], [34.03, -9.03], [33.5, -9.25], [33.25, -9.15], [33.0, -9.25], [32.75, -9.15], [32.5, -9.25], [31.97, -9.03], [31.75, -8.5], [31.85, -8.25], [31.75, -8.0], [31.88, -7.7], [31.47, -7.53], [31.32, -7.18], [30.97, -7.03], [30.75, -6.5], [30.85, -6.25], [30.75, -6.0], [30.85, -5.75]]]]}, "2017-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.85, -5.75], [30.75, -5.5], [30.97, -4.97], [31.32, -4.82], [31.47, -4.47], [32.0, -4.25], [32.25, -4.35], [32.5, -4.25], [32.75, -4.35], [33.0, -4.25], [33.53, -4.47], [33.75, -5.0], [33.53, -5.53], [33.18, -5.68], [33.15, -5.75], [33.25, -6.0], [33.15, -6.25], [33.25, -6.5], [33.15, -6.75], [33.18, -6.82], [33.25, -6.85], [33.5, -6.75], [34.03, -6.97], [34.25, -7.5], [34.04, -8.0], [34.25, -8.5], [34.03, -9.03], [33.5, -9.25], [33.25, -9.15], [33.0, -9.25], [32.75, -9.15], [32.5, -9.25], [31.97, -9.03], [31.75, -8.5], [31.85, -8.25], [31.75, -8.0], [31.88, -7.7], [31.47, -7.53], [31.32, -7.18], [30.97, -7.03], [30.75, -6.5], [30.85, -6.25], [30.75, -6.0], [30.85, -5.75]]]]}, "2017-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.85, -5.75], [30.75, -5.5], [30.97, -4.97], [31.32, -4.82], [31.47, -4.47], [32.0, -4.25], [32.25, -4.35], [32.5, -4.25], [32.75, -4.35], [33.0, -4.25], [33.53, -4.47], [33.75, -5.0], [33.53, -5.53], [33.18, -5.68], [33.15, -5.75], [33.25, -6.0], [33.15, -6.25], [33.25, -6.5], [33.15, -6.75], [33.18, -6.82], [33.25, -6.85], [33.5, -6.75], [34.03, -6.97], [34.25, -7.5], [34.04, -8.0], [34.25, -8.5], [34.03, -9.03], [33.5, -9.25], [33.25, -9.15], [33.0, -9.25], [32.75, -9.15], [32.5, -9.25], [31.97, -9.03], [31.75, -8.5], [31.85, -8.25], [31.75, -8.0], [31.88, -7.7], [31.47, -7.53], [31.32, -7.18], [30.97, -7.03], [30.75, -6.5], [30.85, -6.25], [30.75, -6.0], [30.85, -5.75]]]]}, "2017-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, -7.47], [33.0, -7.25], [33.53, -7.47], [33.75, -8.0], [33.65, -8.25], [33.75, -8.5], [33.53, -9.03], [33.0, -9.25], [32.47, -9.03], [32.25, -8.5], [32.35, -8.25], [32.25, -8.0], [32.47, -7.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.757290002318655}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7712469392095738}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.17655039368117, 22.35709913960619, 21.08494467418518, 23.635775204262814]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.654696367208032, 21.250234869904943, 19.819209666198788, 21.931817822578694]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.2263767677834085, -2.974244392322684, -4.238531711651444, -2.454420370857008]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.083843021908592, -3.7757852557547267, -5.757290002318655, -2.7684858423288006]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.4353953383287235, -1.658019456281011, -2.3634405834493957, -1.4631046083156893]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.3146420760041937, -2.049090561875279, -3.150731640321084, -1.561740627508022]}}