{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:50.800359", "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": "2021-Jan-02_to_2021-Jan-09_289.0_10.5"}, "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": 2021010000213}, "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 02 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 2021"}, "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": 75950.4338188588}, "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", "N.W.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": ["Caribbean Sea"]}, "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": 10.5}, "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": 289.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "289.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 286.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 291.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.0, 11.75], [-69.75, 11.65], [-69.5, 11.75], [-69.25, 11.65], [-69.0, 11.75], [-68.47, 11.53], [-68.25, 11.0], [-68.35, 10.75], [-68.25, 10.5], [-68.47, 9.97], [-69.0, 9.75], [-69.25, 9.85], [-69.5, 9.75], [-69.75, 9.85], [-70.0, 9.75], [-70.25, 9.85], [-70.5, 9.75], [-71.03, 9.97], [-71.25, 10.5], [-71.03, 11.03], [-70.68, 11.18], [-70.53, 11.53], [-70.0, 11.75]]]]}, "2021-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.5, 11.25], [-71.97, 11.03], [-71.75, 10.5], [-71.97, 9.97], [-72.37, 9.8], [-72.25, 9.5], [-72.47, 8.97], [-73.0, 8.75], [-73.53, 8.97], [-73.75, 9.5], [-73.53, 10.03], [-73.12, 10.2], [-73.25, 10.5], [-73.03, 11.03], [-72.5, 11.25]]], [[[-71.03, 11.53], [-70.68, 11.68], [-70.53, 12.03], [-70.0, 12.25], [-69.47, 12.03], [-69.32, 11.68], [-69.25, 11.65], [-69.0, 11.75], [-68.47, 11.53], [-68.25, 11.0], [-68.35, 10.75], [-68.25, 10.5], [-68.47, 9.97], [-69.0, 9.75], [-69.25, 9.85], [-69.32, 9.82], [-69.47, 9.47], [-70.0, 9.25], [-70.25, 9.35], [-70.5, 9.25], [-70.75, 9.35], [-71.0, 9.25], [-71.53, 9.47], [-71.75, 10.0], [-71.53, 10.53], [-71.18, 10.68], [-71.15, 10.75], [-71.25, 11.0], [-71.03, 11.53]]]]}, "2021-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.25, 11.0], [-74.03, 11.53], [-73.5, 11.75], [-73.25, 11.65], [-73.18, 11.68], [-73.03, 12.03], [-72.5, 12.25], [-71.97, 12.03], [-71.82, 11.68], [-71.5, 11.54], [-71.0, 11.75], [-70.75, 11.65], [-70.68, 11.68], [-70.53, 12.03], [-70.0, 12.25], [-69.47, 12.03], [-69.32, 11.68], [-69.25, 11.65], [-69.0, 11.75], [-68.47, 11.53], [-68.25, 11.0], [-68.35, 10.75], [-68.25, 10.5], [-68.47, 9.97], [-69.0, 9.75], [-69.25, 9.85], [-69.32, 9.82], [-69.47, 9.47], [-70.0, 9.25], [-70.25, 9.35], [-70.5, 9.25], [-70.75, 9.35], [-71.0, 9.25], [-71.53, 9.47], [-71.68, 9.82], [-71.8, 9.88], [-71.97, 9.47], [-72.32, 9.32], [-72.47, 8.97], [-73.0, 8.75], [-73.53, 8.97], [-73.75, 9.5], [-73.65, 9.75], [-73.75, 10.0], [-73.65, 10.25], [-73.68, 10.32], [-74.03, 10.47], [-74.25, 11.0]]]]}, "2021-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.25, 11.0], [-74.03, 11.53], [-73.5, 11.75], [-73.25, 11.65], [-73.18, 11.68], [-73.03, 12.03], [-72.5, 12.25], [-71.97, 12.03], [-71.82, 11.68], [-71.5, 11.54], [-71.0, 11.75], [-70.75, 11.65], [-70.68, 11.68], [-70.53, 12.03], [-70.0, 12.25], [-69.47, 12.03], [-69.25, 11.5], [-69.47, 10.97], [-69.82, 10.82], [-69.85, 10.75], [-69.82, 10.68], [-69.47, 10.53], [-69.25, 10.0], [-69.47, 9.47], [-70.0, 9.25], [-70.25, 9.35], [-70.5, 9.25], [-70.75, 9.35], [-71.0, 9.25], [-71.53, 9.47], [-71.68, 9.82], [-71.8, 9.88], [-71.97, 9.47], [-72.32, 9.32], [-72.47, 8.97], [-73.0, 8.75], [-73.53, 8.97], [-73.75, 9.5], [-73.65, 9.75], [-73.75, 10.0], [-73.65, 10.25], [-73.68, 10.32], [-74.03, 10.47], [-74.25, 11.0]]]]}, "2021-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.25, 11.0], [-74.03, 11.53], [-73.5, 11.75], [-73.25, 11.65], [-73.18, 11.68], [-73.03, 12.03], [-72.5, 12.25], [-71.97, 12.03], [-71.82, 11.68], [-71.5, 11.54], [-71.0, 11.75], [-70.75, 11.65], [-70.5, 11.75], [-69.97, 11.53], [-69.75, 11.0], [-69.85, 10.75], [-69.75, 10.5], [-69.85, 10.25], [-69.75, 10.0], [-69.97, 9.47], [-70.5, 9.25], [-70.75, 9.35], [-71.0, 9.25], [-71.53, 9.47], [-71.68, 9.82], [-71.8, 9.88], [-71.97, 9.47], [-72.5, 9.25], [-72.75, 9.35], [-73.0, 9.25], [-73.53, 9.47], [-73.75, 10.0], [-73.65, 10.25], [-73.68, 10.32], [-74.03, 10.47], [-74.25, 11.0]]]]}, "2021-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 9.97], [-71.75, 10.5], [-71.53, 11.03], [-71.0, 11.25], [-70.47, 11.03], [-70.25, 10.5], [-70.47, 9.97], [-71.0, 9.75], [-71.53, 9.97]]], [[[-74.03, 10.47], [-74.25, 11.0], [-74.03, 11.53], [-73.5, 11.75], [-72.97, 11.53], [-72.75, 11.0], [-72.97, 10.47], [-73.5, 10.25], [-74.03, 10.47]]]]}, "2021-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.0, 11.25], [-70.47, 11.03], [-70.25, 10.5], [-70.47, 9.97], [-71.0, 9.75], [-71.53, 9.97], [-71.75, 10.5], [-71.53, 11.03], [-71.0, 11.25]]]]}, "2021-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.0, 11.25], [-70.47, 11.03], [-70.25, 10.5], [-70.47, 9.97], [-71.0, 9.75], [-71.53, 9.97], [-71.75, 10.5], [-71.53, 11.03], [-71.0, 11.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.971192023032927}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.734970111837825}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.249107321348845, 23.186098929578918, 22.876198353213056, 23.194717817691412, 23.378351975672842, 20.437712515917497, 25.733240090388392, 25.510249492308503]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.17475351009938, 21.439139264812525, 14.841192383618534, 14.959468965125495, 14.874307072620184, 15.0994318814258, 25.733240090388392, 25.510249492308503]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4863259058967466, -1.8067143734277076, -1.950537054590493, -1.7001194153938735, -1.5334966607723193, -1.2820067527391075, -1.5872093268234835, -1.819838823979751]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5885351275991297, -2.342098182061079, -2.971192023032927, -2.2949739831745433, -1.982957678465425, -1.5104491317382553, -1.5872093268234835, -1.819838823979751]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4149342891536822, -1.7540955863490062, -1.9357599842138262, -1.7205029356193147, -1.5869807273678178, -1.3538033405866088, -1.261329228413819, -1.4389174852934188]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6080637507637399, -2.3688235886636835, -2.6663005790429137, -2.1756089609408513, -1.9069526874762466, -1.473615946327568, -1.261329228413819, -1.4389174852934188]}}