{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:25.250159", "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-28_to_2018-Mar-31_293.5_3.0"}, "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": 2018030001121}, "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 28 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 31 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": 77160.57679464307}, "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": 3.0}, "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": 293.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "293.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 295.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.25}, "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": {"2018-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.53, 4.03], [-69.0, 4.25], [-68.7, 4.12], [-68.53, 4.53], 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[-65.5, 4.04], [-65.0, 4.25], [-64.47, 4.03], [-64.25, 3.5], [-64.47, 2.97], [-64.82, 2.82], [-64.85, 2.75], [-64.75, 2.5], [-64.85, 2.25], [-64.75, 2.0], [-64.97, 1.47], [-65.5, 1.25], [-65.75, 1.35], [-65.82, 1.32], [-65.97, 0.97], [-66.5, 0.75], [-67.03, 0.97], [-67.25, 1.5], [-67.15, 1.75], [-67.25, 2.0], [-67.15, 2.25], [-67.18, 2.32], [-67.25, 2.35], [-67.5, 2.25], [-67.75, 2.35], [-68.0, 2.25], [-68.25, 2.35], [-68.5, 2.25], [-68.75, 2.35], [-69.0, 2.25], [-69.53, 2.47], [-69.75, 3.0], [-69.65, 3.25], [-69.75, 3.5], [-69.53, 4.03]]]]}, "2018-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.53, 4.03], [-69.0, 4.25], [-68.7, 4.12], [-68.53, 4.53], [-68.18, 4.68], [-68.03, 5.03], [-67.5, 5.25], [-67.25, 5.15], [-67.0, 5.25], [-66.47, 5.03], [-66.25, 4.5], [-66.37, 4.2], [-66.25, 4.15], [-66.0, 4.25], [-65.5, 4.04], [-65.0, 4.25], [-64.47, 4.03], [-64.25, 3.5], [-64.47, 2.97], [-64.82, 2.82], [-64.85, 2.75], [-64.75, 2.5], [-64.85, 2.25], [-64.75, 2.0], [-64.97, 1.47], [-65.5, 1.25], [-65.75, 1.35], [-65.82, 1.32], [-65.97, 0.97], [-66.5, 0.75], [-67.03, 0.97], [-67.25, 1.5], [-67.15, 1.75], [-67.25, 2.0], [-67.15, 2.25], [-67.18, 2.32], [-67.25, 2.35], [-67.5, 2.25], [-67.75, 2.35], [-68.0, 2.25], [-68.25, 2.35], [-68.5, 2.25], [-68.75, 2.35], [-69.0, 2.25], [-69.53, 2.47], [-69.75, 3.0], [-69.65, 3.25], [-69.75, 3.5], [-69.53, 4.03]]]]}, "2018-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.54, 4.0], [-67.75, 4.5], [-67.53, 5.03], [-67.0, 5.25], [-66.47, 5.03], [-66.25, 4.5], [-66.37, 4.2], [-65.97, 4.03], [-65.75, 3.5], [-65.85, 3.25], [-65.75, 3.0], [-65.97, 2.47], [-66.5, 2.25], [-66.75, 2.35], [-67.0, 2.25], [-67.53, 2.47], [-67.75, 3.0], [-67.65, 3.25], [-67.75, 3.5], [-67.54, 4.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.188110230316795}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5482553837375115}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.956949624782112, 24.13667861121752, 24.233872271045016, 24.14107696523274]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.619866426102476, 21.692104764701924, 21.873020879696696, 21.972019430427565]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.745411222977582, -1.5335138273809434, -1.4234110513178553, -1.2604056314182799]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.188110230316795, -1.9751389968008652, -1.8460808329530778, -1.357801204938255]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6277064247697097, -1.4854120867840215, -1.415921214792725, -1.319342874112232]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8727473253628457, -1.7903008519057082, -1.791358348967951, -1.4007006038255032]}}