{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:10.663338", "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": "2012-Apr-17_to_2012-Apr-22_296.0_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": 2012040000971}, "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 17 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 22 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 82581.7439248791}, "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": ["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": 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": 296.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 294.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 297.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.0, 9.25], [-63.47, 9.03], [-63.25, 8.5], [-63.47, 7.97], [-64.0, 7.75], [-64.53, 7.97], [-64.75, 8.5], [-64.53, 9.03], [-64.0, 9.25]]]]}, "2012-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.0, 7.75], [-63.75, 7.65], [-63.5, 7.75], [-62.97, 7.53], [-62.82, 7.18], [-62.47, 7.03], [-62.25, 6.5], [-62.47, 5.97], [-63.0, 5.75], [-63.25, 5.85], [-63.5, 5.75], [-63.75, 5.85], [-64.0, 5.75], [-64.53, 5.97], [-64.75, 6.5], [-64.65, 6.75], [-64.75, 7.0], [-64.53, 7.53], [-64.0, 7.75]]], [[[-64.53, 9.03], [-64.18, 9.18], [-64.03, 9.53], [-63.5, 9.75], [-63.2, 9.62], [-63.03, 10.03], [-62.5, 10.25], [-61.97, 10.03], [-61.75, 9.5], [-61.97, 8.97], [-62.5, 8.75], [-62.8, 8.88], [-62.85, 8.75], [-62.75, 8.5], [-62.97, 7.97], [-63.5, 7.75], [-63.75, 7.85], [-64.0, 7.75], [-64.53, 7.97], [-64.75, 8.5], [-64.53, 9.03]]]]}, "2012-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.25, 8.5], [-66.03, 9.03], [-65.68, 9.18], [-65.53, 9.53], [-65.18, 9.68], [-65.03, 10.03], [-64.5, 10.25], [-64.25, 10.15], [-64.0, 10.25], [-63.75, 10.15], [-63.5, 10.25], [-63.25, 10.15], [-63.0, 10.25], [-62.75, 10.15], [-62.5, 10.25], [-61.97, 10.03], [-61.75, 9.5], [-61.97, 8.97], [-62.32, 8.82], [-62.47, 8.47], [-62.82, 8.32], [-62.85, 8.25], [-62.75, 8.0], [-62.85, 7.75], [-62.75, 7.5], [-62.85, 7.25], [-62.82, 7.18], [-62.47, 7.03], [-62.25, 6.5], [-62.47, 5.97], [-63.0, 5.75], [-63.25, 5.85], [-63.5, 5.75], [-63.75, 5.85], [-64.0, 5.75], [-64.53, 5.97], [-64.75, 6.5], [-64.65, 6.75], [-64.68, 6.82], [-65.03, 6.97], [-65.18, 7.32], [-65.53, 7.47], [-65.68, 7.82], [-66.03, 7.97], [-66.25, 8.5]]]]}, "2012-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.25, 8.5], [-66.03, 9.03], [-65.68, 9.18], [-65.53, 9.53], [-65.18, 9.68], [-65.03, 10.03], [-64.5, 10.25], [-64.25, 10.15], [-64.0, 10.25], [-63.75, 10.15], [-63.5, 10.25], [-63.25, 10.15], [-63.0, 10.25], [-62.75, 10.15], [-62.5, 10.25], [-61.97, 10.03], [-61.75, 9.5], [-61.97, 8.97], [-62.32, 8.82], [-62.47, 8.47], [-62.82, 8.32], [-62.85, 8.25], [-62.75, 8.0], [-62.85, 7.75], [-62.75, 7.5], [-62.85, 7.25], [-62.82, 7.18], [-62.47, 7.03], [-62.25, 6.5], [-62.47, 5.97], [-63.0, 5.75], [-63.25, 5.85], [-63.5, 5.75], [-63.75, 5.85], [-64.0, 5.75], [-64.53, 5.97], [-64.75, 6.5], [-64.65, 6.75], [-64.68, 6.82], [-65.03, 6.97], [-65.18, 7.32], [-65.53, 7.47], [-65.68, 7.82], [-66.03, 7.97], [-66.25, 8.5]]]]}, "2012-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.25, 8.5], [-66.03, 9.03], [-65.68, 9.18], [-65.53, 9.53], [-65.18, 9.68], [-65.03, 10.03], [-64.5, 10.25], [-64.25, 10.15], [-64.0, 10.25], [-63.75, 10.15], [-63.5, 10.25], [-63.25, 10.15], [-63.0, 10.25], [-62.47, 10.03], [-62.25, 9.5], [-62.35, 9.25], [-62.25, 9.0], [-62.47, 8.47], [-62.82, 8.32], [-62.85, 8.25], [-62.75, 8.0], [-62.85, 7.75], [-62.75, 7.5], [-62.85, 7.25], [-62.82, 7.18], [-62.47, 7.03], [-62.25, 6.5], [-62.47, 5.97], [-63.0, 5.75], [-63.25, 5.85], [-63.5, 5.75], [-63.75, 5.85], [-64.0, 5.75], [-64.53, 5.97], [-64.75, 6.5], [-64.65, 6.75], [-64.68, 6.82], [-65.03, 6.97], [-65.18, 7.32], [-65.53, 7.47], [-65.68, 7.82], [-66.03, 7.97], [-66.25, 8.5]]]]}, "2012-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.25, 8.5], [-66.03, 9.03], [-65.68, 9.18], [-65.53, 9.53], [-65.18, 9.68], [-65.03, 10.03], [-64.5, 10.25], [-63.97, 10.03], [-63.82, 9.68], [-63.47, 9.53], [-63.32, 9.18], [-62.97, 9.03], [-62.75, 8.5], [-62.97, 7.97], [-63.32, 7.82], [-63.35, 7.75], [-63.25, 7.5], [-63.35, 7.25], [-63.25, 7.0], [-63.35, 6.75], [-63.25, 6.5], [-63.47, 5.97], [-64.0, 5.75], [-64.53, 5.97], [-64.75, 6.5], [-64.65, 6.75], [-64.68, 6.82], [-65.03, 6.97], [-65.18, 7.32], [-65.53, 7.47], [-65.68, 7.82], [-66.03, 7.97], [-66.25, 8.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.64418197394491}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0088091384846067}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.521760285930043, 26.050030015869083, 25.807619898586438, 26.48104050129507, 26.846414626510978, 27.290451407160447]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.521760285930043, 24.068561673763554, 24.062281067106312, 24.596056963024296, 24.585311828742988, 24.98545457578217]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4272895951672808, -1.5444878382377156, -2.658037934386279, -2.010315795745616, -1.7198428701475734, -1.6777889501664696]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4272895951672808, -2.3039159622662737, -3.64418197394491, -2.590392654530831, -2.6150484944470804, -2.46498352437618]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3367948508548293, -1.4029927957714319, -2.5163603732596624, -1.939864337100836, -1.6151702150436051, -1.4533557258209264]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3367948508548293, -2.1071882566253, -3.3385794323467692, -2.5090969902274356, -2.037044350851678, -1.8005371749664723]}}