{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:16.111378", "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": "2013-Jan-21_to_2013-Jan-24_316.5_-18.5"}, "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": 2013010000672}, "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 21 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 24 2013"}, "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": 67656.89803913116}, "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"]}, "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": -18.5}, "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": 316.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "316.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 315.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.53, -17.47], [-44.0, -17.25], [-43.47, -17.47], 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[-44.53, -17.47], [-44.0, -17.25], [-43.75, -17.35], [-43.68, -17.32], [-43.65, -17.25], [-43.75, -17.0], [-43.53, -16.47], [-43.18, -16.32], [-43.03, -15.97], [-42.5, -15.75], [-41.97, -15.97], [-41.82, -16.32], [-41.75, -16.35], [-41.5, -16.25], [-41.25, -16.35], [-41.0, -16.25], [-40.75, -16.35], [-40.5, -16.25], [-40.25, -16.35], [-40.0, -16.25], [-39.47, -16.47], [-39.25, -17.0], [-39.35, -17.25], [-39.25, -17.5], [-39.47, -18.03], [-40.0, -18.25], [-40.25, -18.15], [-40.5, -18.25], [-41.03, -18.03], [-41.18, -17.68], [-41.25, -17.65], [-41.32, -17.68], [-41.47, -18.03], [-41.82, -18.18], [-41.97, -18.53], [-42.32, -18.68], [-42.47, -19.03], [-42.82, -19.18], [-42.85, -19.25], [-42.75, -19.5], [-42.85, -19.75], [-42.75, -20.0], [-42.97, -20.53], [-43.5, -20.75], [-44.03, -20.53], [-44.25, -20.0], [-44.15, -19.75], [-44.2, -19.62], [-44.5, -19.75], [-45.03, -19.53], [-45.25, -19.0], [-45.03, -18.47], [-44.68, -18.32], [-44.65, -18.25], [-44.75, -18.0]]]]}, 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{"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2282264327720327}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2004341021163305}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.348407370417874, 21.7445716454655, 21.734198193955535, 21.602227557899596]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.857700603377737, 19.162842689386764, 19.4224840786502, 19.844162108878947]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.111137376450437, -2.292295533028269, -2.3259285202554305, -1.974650155380021]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5443098519893965, -3.1706430817495743, -3.2282264327720327, -2.2099330037960954]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4420593246865372, -1.625565226936148, -1.6531184297965433, -1.454373402838063]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8247901771948505, -2.247783630996467, -2.026247305563753, -1.728415400513341]}}