{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:36.330948", "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-Apr-04_to_2018-Apr-06_291.5_4.5"}, "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": 2018040000257}, "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": "April 04 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 06 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 150928.44791288505}, "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": ["Colombia", "Venezuela"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": 4.5}, "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": 291.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 294.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.25}, "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": {"2018-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.25, 5.0], [-72.03, 5.53], [-71.5, 5.75], [-71.25, 5.65], [-71.18, 5.68], [-71.03, 6.03], [-70.68, 6.18], [-70.53, 6.53], [-70.0, 6.75], [-69.75, 6.65], [-69.5, 6.75], [-69.25, 6.65], [-69.0, 6.75], [-68.75, 6.65], [-68.5, 6.75], [-67.97, 6.53], [-67.8, 6.12], [-67.5, 6.25], [-67.25, 6.15], [-67.0, 6.25], [-66.75, 6.15], [-66.5, 6.25], [-66.0, 6.04], [-65.5, 6.25], [-64.97, 6.03], [-64.75, 5.5], [-64.97, 4.97], [-65.32, 4.82], [-65.47, 4.47], [-65.82, 4.32], [-65.97, 3.97], [-66.32, 3.82], [-66.47, 3.47], [-66.82, 3.32], [-66.97, 2.97], [-67.5, 2.75], [-67.75, 2.85], [-68.0, 2.75], [-68.53, 2.97], [-68.68, 3.32], [-68.75, 3.35], [-68.82, 3.32], [-68.97, 2.97], [-69.5, 2.75], [-70.03, 2.97], [-70.18, 3.32], [-70.25, 3.35], [-70.5, 3.25], [-71.0, 3.46], [-71.5, 3.25], [-71.75, 3.35], [-72.0, 3.25], [-72.53, 3.47], [-72.75, 4.0], [-72.53, 4.53], [-72.18, 4.68], [-72.15, 4.75], [-72.25, 5.0]]]]}, "2018-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.25, 5.0], [-72.03, 5.53], [-71.5, 5.75], [-71.25, 5.65], [-71.18, 5.68], [-71.03, 6.03], [-70.68, 6.18], [-70.53, 6.53], [-70.0, 6.75], [-69.75, 6.65], [-69.5, 6.75], [-69.25, 6.65], [-69.0, 6.75], [-68.75, 6.65], [-68.5, 6.75], [-67.97, 6.53], [-67.8, 6.12], [-67.5, 6.25], [-67.25, 6.15], [-67.0, 6.25], [-66.75, 6.15], [-66.5, 6.25], [-66.0, 6.04], [-65.5, 6.25], [-64.97, 6.03], [-64.75, 5.5], [-64.97, 4.97], [-65.32, 4.82], [-65.47, 4.47], [-65.82, 4.32], [-65.97, 3.97], [-66.32, 3.82], [-66.47, 3.47], [-66.82, 3.32], [-66.97, 2.97], [-67.5, 2.75], [-67.75, 2.85], [-68.0, 2.75], [-68.53, 2.97], [-68.68, 3.32], [-68.75, 3.35], [-68.82, 3.32], [-68.97, 2.97], [-69.5, 2.75], [-70.03, 2.97], [-70.18, 3.32], [-70.25, 3.35], [-70.5, 3.25], [-71.0, 3.46], [-71.5, 3.25], [-71.75, 3.35], [-72.0, 3.25], [-72.53, 3.47], [-72.75, 4.0], [-72.53, 4.53], [-72.18, 4.68], [-72.15, 4.75], [-72.25, 5.0]]]]}, "2018-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.25, 5.0], [-72.03, 5.53], [-71.5, 5.75], [-71.25, 5.65], [-71.18, 5.68], [-71.03, 6.03], [-70.68, 6.18], [-70.53, 6.53], [-70.0, 6.75], [-69.75, 6.65], [-69.5, 6.75], [-69.25, 6.65], [-69.0, 6.75], [-68.75, 6.65], [-68.5, 6.75], [-67.97, 6.53], [-67.8, 6.12], [-67.5, 6.25], [-67.25, 6.15], [-67.0, 6.25], [-66.75, 6.15], [-66.5, 6.25], [-66.0, 6.04], [-65.5, 6.25], [-64.97, 6.03], [-64.75, 5.5], [-64.97, 4.97], [-65.32, 4.82], [-65.47, 4.47], [-65.82, 4.32], [-65.97, 3.97], [-66.32, 3.82], [-66.47, 3.47], [-66.82, 3.32], [-66.97, 2.97], [-67.5, 2.75], [-67.75, 2.85], [-68.0, 2.75], [-68.53, 2.97], [-68.68, 3.32], [-68.75, 3.35], [-68.82, 3.32], [-68.97, 2.97], [-69.5, 2.75], [-70.03, 2.97], [-70.18, 3.32], [-70.25, 3.35], [-70.5, 3.25], [-71.0, 3.46], [-71.5, 3.25], [-71.75, 3.35], [-72.0, 3.25], [-72.53, 3.47], [-72.75, 4.0], [-72.53, 4.53], [-72.18, 4.68], [-72.15, 4.75], [-72.25, 5.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.103335074948859}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8825308919658168}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.530955239295565, 24.000739000246256, 24.178769311953488]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.295767793807727, 19.780286970888483, 19.979754267627698]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6356859526226915, -2.1193113608205922, -1.8925953624541667]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1762176920818206, -3.103335074948859, -2.546214351473452]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.541321905510697, -1.931200653601986, -1.7265369338340766]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8889499259974218, -2.345074733825887, -2.1370814775089264]}}