{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:18.735990", "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-Mar-05_to_2018-Mar-08_292.0_6.0"}, "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": 2018030000256}, "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": "March 05 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 08 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": 135086.28355214768}, "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": 6.0}, "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": 292.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "292.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 288.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 292.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.25, 7.0], [-71.03, 7.53], [-70.68, 7.68], [-70.53, 8.03], [-70.18, 8.18], [-70.03, 8.53], [-69.5, 8.75], [-68.97, 8.53], [-68.82, 8.18], [-68.47, 8.03], [-68.25, 7.5], [-68.37, 7.2], [-68.25, 7.15], [-68.0, 7.25], [-67.75, 7.15], [-67.5, 7.25], [-66.97, 7.03], [-66.75, 6.5], [-66.85, 6.25], [-66.75, 6.0], [-66.97, 5.47], [-67.5, 5.25], [-67.75, 5.35], [-68.0, 5.25], [-68.25, 5.35], [-68.5, 5.25], [-68.75, 5.35], [-69.0, 5.25], [-69.25, 5.35], [-69.5, 5.25], [-69.75, 5.35], [-70.0, 5.25], [-70.53, 5.47], [-70.75, 6.0], [-70.65, 6.25], [-70.68, 6.32], [-71.03, 6.47], [-71.25, 7.0]]]]}, "2018-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.25, 5.5], [-72.03, 6.03], [-71.68, 6.18], [-71.65, 6.25], [-71.75, 6.5], [-71.65, 6.75], [-71.75, 7.0], [-71.65, 7.25], [-71.75, 7.5], [-71.53, 8.03], [-71.0, 8.25], [-70.75, 8.15], [-70.68, 8.18], [-70.65, 8.25], [-70.75, 8.5], [-70.53, 9.03], [-70.18, 9.18], [-70.03, 9.53], [-69.5, 9.75], [-68.97, 9.53], [-68.82, 9.18], [-68.47, 9.03], [-68.25, 8.5], [-68.35, 8.25], [-68.25, 8.0], [-68.35, 7.75], [-68.25, 7.5], [-68.35, 7.25], [-68.32, 7.18], [-68.25, 7.15], [-68.0, 7.25], [-67.75, 7.15], [-67.5, 7.25], [-66.97, 7.03], [-66.75, 6.5], [-66.85, 6.25], [-66.75, 6.0], [-66.97, 5.47], [-67.32, 5.32], [-67.47, 4.97], [-68.0, 4.75], [-68.25, 4.85], [-68.5, 4.75], [-68.75, 4.85], [-69.0, 4.75], [-69.25, 4.85], [-69.32, 4.82], [-69.47, 4.47], [-70.0, 4.25], [-70.25, 4.35], [-70.5, 4.25], [-70.75, 4.35], [-71.0, 4.25], [-71.53, 4.47], [-71.68, 4.82], [-72.03, 4.97], [-72.25, 5.5]]]]}, "2018-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.25, 5.5], [-72.03, 6.03], [-71.68, 6.18], [-71.65, 6.25], [-71.75, 6.5], [-71.65, 6.75], [-71.75, 7.0], [-71.65, 7.25], [-71.75, 7.5], [-71.53, 8.03], [-71.0, 8.25], [-70.75, 8.15], [-70.68, 8.18], [-70.65, 8.25], [-70.75, 8.5], [-70.53, 9.03], [-70.18, 9.18], [-70.03, 9.53], [-69.5, 9.75], [-68.97, 9.53], [-68.82, 9.18], [-68.47, 9.03], [-68.25, 8.5], [-68.35, 8.25], [-68.25, 8.0], [-68.35, 7.75], [-68.25, 7.5], [-68.35, 7.25], [-68.32, 7.18], [-68.25, 7.15], [-68.0, 7.25], [-67.75, 7.15], [-67.5, 7.25], [-66.97, 7.03], [-66.75, 6.5], [-66.85, 6.25], [-66.75, 6.0], [-66.97, 5.47], [-67.32, 5.32], [-67.47, 4.97], [-68.0, 4.75], [-68.25, 4.85], [-68.5, 4.75], [-68.75, 4.85], [-69.0, 4.75], [-69.25, 4.85], [-69.32, 4.82], [-69.47, 4.47], [-70.0, 4.25], [-70.25, 4.35], [-70.5, 4.25], [-70.75, 4.35], [-71.0, 4.25], [-71.53, 4.47], [-71.68, 4.82], [-72.03, 4.97], [-72.25, 5.5]]]]}, "2018-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.25, 5.5], [-72.03, 6.03], [-71.68, 6.18], [-71.65, 6.25], [-71.75, 6.5], [-71.65, 6.75], [-71.75, 7.0], [-71.65, 7.25], [-71.75, 7.5], [-71.53, 8.03], [-71.0, 8.25], [-70.75, 8.15], [-70.68, 8.18], [-70.65, 8.25], [-70.75, 8.5], [-70.53, 9.03], [-70.18, 9.18], [-70.03, 9.53], [-69.5, 9.75], [-68.97, 9.53], [-68.82, 9.18], [-68.47, 9.03], [-68.25, 8.5], [-68.35, 8.25], [-68.25, 8.0], [-68.35, 7.75], [-68.25, 7.5], [-68.35, 7.25], [-68.32, 7.18], [-68.25, 7.15], [-68.0, 7.25], [-67.75, 7.15], [-67.5, 7.25], [-66.97, 7.03], [-66.75, 6.5], [-66.85, 6.25], [-66.75, 6.0], [-66.97, 5.47], [-67.32, 5.32], [-67.47, 4.97], [-68.0, 4.75], [-68.25, 4.85], [-68.5, 4.75], [-68.75, 4.85], [-69.0, 4.75], [-69.25, 4.85], [-69.32, 4.82], [-69.47, 4.47], [-70.0, 4.25], [-70.25, 4.35], [-70.5, 4.25], [-70.75, 4.35], [-71.0, 4.25], [-71.53, 4.47], [-71.68, 4.82], [-72.03, 4.97], [-72.25, 5.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.922397854025178}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.22897842405355}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.862919532555566, 26.62030903909948, 27.052354475580955, 27.13119066870678]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.96685572722248, 25.62905863298255, 25.812394554393563, 25.455473108013052]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8023230725964874, -2.6259012124241705, -2.1708161692350685, -2.0647587160974825]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.207247775116798, -3.922397854025178, -2.8179190040982576, -2.4267324550511375]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4363641824324775, -2.0673157269947784, -1.6908488396092736, -1.5398606339504637]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.774261694179992, -3.0083503109697665, -2.0883343925707205, -1.897932853060264]}}