{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:23.207200", "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": "2010-Dec-30_to_2011-Jan-03_310.5_-14.5"}, "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": 2010120001390}, "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": "December 30 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 03 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 168421.24024420726}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "South-American-Monsoon"]}, "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": -14.5}, "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": 310.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "310.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 306.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 312.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.25}, "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": {"2010-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -15.03], [-50.25, -14.5], [-50.03, -13.97], [-49.5, -13.75], [-48.97, -13.97], [-48.75, -14.5], [-48.97, -15.03], [-49.5, -15.25], [-50.03, -15.03]]], [[[-52.03, -12.97], [-51.5, -12.75], [-51.25, -12.85], [-51.0, -12.75], [-50.47, -12.97], [-50.25, -13.5], [-50.35, -13.75], [-50.25, -14.0], [-50.47, -14.53], [-51.0, -14.75], [-51.53, -14.53], [-51.68, -14.18], [-52.03, -14.03], [-52.25, -13.5], [-52.03, -12.97]]]]}, "2010-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -15.03], [-50.25, -14.5], [-50.03, -13.97], [-49.5, -13.75], [-48.97, -13.97], [-48.75, -14.5], [-48.97, -15.03], [-49.5, -15.25], [-50.03, -15.03]]], [[[-47.25, -14.5], [-47.47, -15.03], [-48.0, -15.25], [-48.53, -15.03], [-48.75, -14.5], [-48.53, -13.97], [-48.0, -13.75], [-47.47, -13.97], [-47.25, -14.5]]], [[[-53.65, -11.25], [-53.75, -11.0], [-53.65, -10.75], [-53.75, -10.5], [-53.65, -10.25], [-53.75, -10.0], [-53.53, -9.47], [-53.0, -9.25], [-52.75, -9.35], [-52.5, -9.25], [-51.97, -9.47], [-51.75, -10.0], [-51.85, -10.25], [-51.82, -10.32], [-51.75, -10.35], [-51.5, -10.25], [-50.97, -10.47], [-50.75, -11.0], [-50.85, -11.25], [-50.75, -11.5], [-50.85, -11.75], [-50.75, -12.0], [-50.85, -12.25], [-50.75, -12.5], [-50.87, -12.8], [-50.7, -12.88], [-50.53, -12.47], [-50.0, -12.25], [-49.47, -12.47], [-49.25, -13.0], [-49.47, -13.53], [-50.0, -13.75], [-50.3, -13.62], [-50.35, -13.75], [-50.25, -14.0], [-50.47, -14.53], [-51.0, -14.75], [-51.25, -14.65], [-51.5, -14.75], [-52.03, -14.53], [-52.18, -14.18], [-52.53, -14.03], [-52.75, -13.5], [-52.62, -13.2], [-52.75, -13.15], [-53.0, -13.25], [-53.53, -13.03], [-53.75, -12.5], [-53.65, -12.25], [-53.75, -12.0], [-53.65, -11.75], [-53.75, -11.5], [-53.65, -11.25]]]]}, "2011-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.65, -12.75], [-53.75, -12.5], [-53.65, -12.25], [-53.75, -12.0], [-53.65, -11.75], [-53.75, -11.5], [-53.65, -11.25], [-53.75, -11.0], [-53.65, -10.75], [-53.75, -10.5], [-53.65, -10.25], [-53.75, -10.0], [-53.53, -9.47], [-53.0, -9.25], [-52.75, -9.35], [-52.5, -9.25], [-51.97, -9.47], [-51.75, -10.0], [-51.85, -10.25], [-51.82, -10.32], [-51.75, -10.35], [-51.5, -10.25], [-50.97, -10.47], [-50.75, -11.0], [-50.85, -11.25], [-50.75, -11.5], [-50.85, -11.75], [-50.75, -12.0], [-50.85, -12.25], [-50.75, -12.5], [-50.53, -11.97], [-50.0, -11.75], [-49.47, -11.97], [-49.32, -12.32], [-48.97, -12.47], [-48.75, -13.0], [-48.85, -13.25], [-48.82, -13.32], [-48.75, -13.35], [-48.5, -13.25], [-47.97, -13.47], [-47.82, -13.82], [-47.47, -13.97], [-47.25, -14.5], [-47.47, -15.03], [-47.82, -15.18], [-47.85, -15.25], [-47.75, -15.5], [-47.97, -16.03], [-48.5, -16.25], [-48.75, -16.15], [-48.82, -16.18], [-48.97, -16.53], [-49.5, -16.75], [-50.03, -16.53], [-50.18, -16.18], [-50.25, -16.15], [-50.5, -16.25], [-51.03, -16.03], [-51.25, -15.5], [-51.15, -15.25], [-51.18, -15.18], [-51.25, -15.15], [-51.5, -15.25], [-52.03, -15.03], [-52.18, -14.68], [-52.25, -14.65], [-52.5, -14.75], [-53.03, -14.53], [-53.18, -14.18], [-53.53, -14.03], [-53.75, -13.5], [-53.65, -13.25], [-53.75, -13.0], [-53.65, -12.75]], [[-50.87, -12.8], [-50.7, -12.88], [-50.65, -12.75], [-50.75, -12.5], [-50.87, -12.8]], [[-50.15, -13.75], [-50.18, -13.68], [-50.3, -13.62], [-50.35, -13.75], [-50.3, -13.88], [-50.18, -13.82], [-50.15, -13.75]]]]}, "2011-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.65, -12.75], [-53.75, -12.5], [-53.65, -12.25], [-53.75, -12.0], [-53.65, -11.75], [-53.75, -11.5], [-53.65, -11.25], [-53.75, -11.0], [-53.65, -10.75], [-53.75, -10.5], [-53.65, -10.25], [-53.75, -10.0], [-53.53, -9.47], [-53.0, -9.25], [-52.75, -9.35], [-52.5, -9.25], [-51.97, -9.47], [-51.75, -10.0], [-51.85, -10.25], [-51.82, -10.32], [-51.75, -10.35], [-51.5, -10.25], [-50.97, -10.47], [-50.75, -11.0], [-50.85, -11.25], [-50.75, -11.5], [-50.85, -11.75], [-50.75, -12.0], [-50.85, -12.25], [-50.75, -12.5], [-50.53, -11.97], [-50.0, -11.75], [-49.47, -11.97], [-49.32, -12.32], [-48.97, -12.47], [-48.75, -13.0], [-48.85, -13.25], [-48.82, -13.32], [-48.75, -13.35], [-48.5, -13.25], [-47.97, -13.47], [-47.82, -13.82], [-47.47, -13.97], [-47.25, -14.5], [-47.47, -15.03], [-47.82, -15.18], [-47.85, -15.25], [-47.75, -15.5], [-47.97, -16.03], [-48.5, -16.25], [-48.75, -16.15], [-48.82, -16.18], [-48.97, -16.53], [-49.5, -16.75], [-50.03, -16.53], [-50.18, -16.18], [-50.25, -16.15], [-50.5, -16.25], [-51.03, -16.03], [-51.25, -15.5], [-51.15, -15.25], [-51.18, -15.18], [-51.25, -15.15], [-51.5, -15.25], [-52.03, -15.03], [-52.18, -14.68], [-52.25, -14.65], [-52.5, -14.75], [-53.03, -14.53], [-53.18, -14.18], [-53.53, -14.03], [-53.75, -13.5], [-53.65, -13.25], [-53.75, -13.0], [-53.65, -12.75]], [[-50.87, -12.8], [-50.7, -12.88], [-50.65, -12.75], [-50.75, -12.5], [-50.87, -12.8]], [[-50.15, -13.75], [-50.18, -13.68], [-50.3, -13.62], [-50.35, -13.75], [-50.3, -13.88], [-50.18, -13.82], [-50.15, -13.75]]]]}, "2011-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.65, -12.75], [-53.75, -12.5], [-53.65, -12.25], [-53.75, -12.0], [-53.65, -11.75], [-53.75, -11.5], [-53.65, -11.25], [-53.75, -11.0], [-53.65, -10.75], [-53.75, -10.5], [-53.65, -10.25], [-53.75, -10.0], [-53.53, -9.47], [-53.0, -9.25], [-52.75, -9.35], [-52.5, -9.25], [-51.97, -9.47], [-51.75, -10.0], [-51.85, -10.25], [-51.82, -10.32], [-51.75, -10.35], [-51.5, -10.25], [-50.97, -10.47], [-50.75, -11.0], [-50.85, -11.25], [-50.75, -11.5], [-50.85, -11.75], [-50.75, -12.0], [-50.85, -12.25], [-50.75, -12.5], [-50.53, -11.97], [-50.0, -11.75], [-49.47, -11.97], [-49.32, -12.32], [-48.97, -12.47], [-48.75, -13.0], [-48.85, -13.25], [-48.82, -13.32], [-48.75, -13.35], [-48.5, -13.25], [-47.97, -13.47], [-47.82, -13.82], [-47.47, -13.97], [-47.25, -14.5], [-47.47, -15.03], [-47.82, -15.18], [-47.85, -15.25], [-47.75, -15.5], [-47.97, -16.03], [-48.5, -16.25], [-48.75, -16.15], [-48.82, -16.18], [-48.97, -16.53], [-49.5, -16.75], [-50.03, -16.53], [-50.18, -16.18], [-50.25, -16.15], [-50.5, -16.25], [-51.03, -16.03], [-51.25, -15.5], [-51.15, -15.25], [-51.18, -15.18], [-51.25, -15.15], [-51.5, -15.25], [-52.03, -15.03], [-52.18, -14.68], [-52.25, -14.65], [-52.5, -14.75], [-53.03, -14.53], [-53.18, -14.18], [-53.53, -14.03], [-53.75, -13.5], [-53.65, -13.25], [-53.75, -13.0], [-53.65, -12.75]], [[-50.87, -12.8], [-50.7, -12.88], [-50.65, -12.75], [-50.75, -12.5], [-50.87, -12.8]], [[-50.15, -13.75], [-50.18, -13.68], [-50.3, -13.62], [-50.35, -13.75], [-50.3, -13.88], [-50.18, -13.82], [-50.15, -13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7713063819139734}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.390900538516645}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.192887756409107, 23.55277691848255, 23.306860786249615, 22.635965422995923, 22.58261592062962]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.931850619110435, 21.44970030482574, 21.344176198319474, 20.26588209697445, 20.349293196605743]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0557482084124956, -1.778304963678273, -2.004937048455995, -2.7158874881450976, -2.76023590513124]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.353097269370778, -2.5300741423246222, -2.6143424013148433, -3.4717460123380874, -3.7713063819139734]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4003322964101348, -1.469183200235616, -1.4710369573084285, -1.9825398109551682, -2.0239154130308994]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4736483387476194, -1.8055883133247994, -1.6705929600299854, -2.454235907365693, -2.4158293923351444]}}