{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:16.779545", "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-27_to_2013-Jan-31_317.5_-21.0"}, "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": 2013010000868}, "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 27 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 31 2013"}, "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": 80648.98544667366}, "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": ["S.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": ["South Atlantic Ocean"]}, "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": -21.0}, "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": 317.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "317.5\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": 319.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.5, -22.25], [-43.97, -22.47], [-43.75, -23.0], [-43.97, -23.53], [-44.5, -23.75], [-45.03, -23.53], [-45.25, -23.0], [-45.03, -22.47], [-44.5, -22.25]]]]}, "2013-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.15, -22.25], [-45.25, -22.0], [-45.03, -21.47], [-44.5, -21.25], [-44.25, -21.35], [-44.18, -21.32], [-44.15, -21.25], [-44.25, -21.0], [-44.03, -20.47], [-43.68, -20.32], [-43.65, -20.25], [-43.75, -20.0], [-43.53, -19.47], [-43.0, -19.25], [-42.75, -19.35], [-42.5, -19.25], [-41.97, -19.47], [-41.82, -19.82], [-41.75, -19.85], [-41.5, -19.75], [-41.25, -19.85], [-41.0, -19.75], [-40.75, -19.85], [-40.5, -19.75], [-39.97, -19.97], [-39.75, -20.5], [-39.97, -21.03], [-40.32, -21.18], [-40.35, -21.25], [-40.25, -21.5], [-40.47, -22.03], [-40.82, -22.18], [-40.97, -22.53], [-41.5, -22.75], [-41.75, -22.65], [-42.0, -22.75], [-42.25, -22.65], [-42.5, -22.75], [-42.75, -22.65], [-43.0, -22.75], [-43.5, -22.54], [-43.82, -22.68], [-43.85, -22.75], [-43.75, -23.0], [-43.97, -23.53], [-44.5, -23.75], [-45.03, -23.53], [-45.25, -23.0], [-45.15, -22.75], [-45.25, -22.5], [-45.15, -22.25]]]]}, "2013-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.15, -22.25], [-45.25, -22.0], [-45.03, -21.47], [-44.5, -21.25], [-44.25, -21.35], [-44.18, -21.32], [-44.15, -21.25], [-44.25, -21.0], [-44.03, -20.47], [-43.68, -20.32], [-43.65, -20.25], [-43.75, -20.0], [-43.53, -19.47], [-43.0, -19.25], [-42.75, -19.35], [-42.5, -19.25], [-41.97, -19.47], [-41.82, -19.82], [-41.75, -19.85], [-41.5, -19.75], [-41.25, -19.85], [-41.0, -19.75], [-40.75, -19.85], [-40.5, -19.75], [-39.97, -19.97], [-39.75, -20.5], [-39.97, -21.03], [-40.32, -21.18], [-40.35, -21.25], [-40.25, -21.5], [-40.47, -22.03], [-40.82, -22.18], [-40.97, -22.53], [-41.5, -22.75], [-41.75, -22.65], [-42.0, -22.75], [-42.25, -22.65], [-42.5, -22.75], [-42.75, -22.65], [-43.0, -22.75], [-43.5, -22.54], [-43.82, -22.68], [-43.85, -22.75], [-43.75, -23.0], [-43.97, -23.53], [-44.5, -23.75], [-45.03, -23.53], [-45.25, -23.0], [-45.15, -22.75], [-45.25, -22.5], [-45.15, -22.25]]]]}, "2013-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.03, -21.47], [-44.5, -21.25], [-44.25, -21.35], [-44.18, -21.32], [-44.15, -21.25], [-44.25, -21.0], [-44.03, -20.47], [-43.68, -20.32], [-43.65, -20.25], [-43.75, -20.0], [-43.53, -19.47], [-43.0, -19.25], [-42.75, -19.35], [-42.5, -19.25], [-41.97, -19.47], [-41.82, -19.82], [-41.75, -19.85], [-41.5, -19.75], [-41.25, -19.85], [-41.0, -19.75], [-40.75, -19.85], [-40.5, -19.75], [-39.97, -19.97], [-39.75, -20.5], [-39.97, -21.03], [-40.32, -21.18], [-40.35, -21.25], [-40.25, -21.5], [-40.47, -22.03], [-40.82, -22.18], [-40.97, -22.53], [-41.5, -22.75], [-41.75, -22.65], [-42.0, -22.75], [-42.25, -22.65], [-42.5, -22.75], [-42.75, -22.65], [-43.0, -22.75], [-43.5, -22.54], [-43.82, -22.68], [-43.97, -23.03], [-44.5, -23.25], [-45.03, -23.03], [-45.25, -22.5], [-45.15, -22.25], [-45.25, -22.0], [-45.03, -21.47]]]]}, "2013-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.03, -20.47], [-43.5, -20.25], [-43.25, -20.35], [-43.0, -20.25], [-42.75, -20.35], [-42.5, -20.25], [-42.25, -20.35], [-42.18, -20.32], [-42.03, -19.97], [-41.5, -19.75], [-40.97, -19.97], [-40.75, -20.5], [-40.97, -21.03], [-41.32, -21.18], [-41.47, -21.53], [-41.82, -21.68], [-41.97, -22.03], [-42.5, -22.25], [-42.75, -22.15], [-43.0, -22.25], [-43.25, -22.15], [-43.5, -22.25], [-44.03, -22.03], [-44.25, -21.5], [-44.15, -21.25], [-44.25, -21.0], [-44.03, -20.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.766538533390872}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.2164243711281575}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.104163565484498, 21.105158447372673, 20.671643094728665, 21.990610734862628, 22.005492380854264]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.104163565484498, 17.594291146113562, 17.601733773979447, 18.763279896245194, 20.621385104585556]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9613572499583825, -3.389426424576391, -3.8703446036122955, -2.5927799855965836, -2.458879561680142]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9613572499583825, -4.094171471357299, -4.766538533390872, -3.6955615514941655, -2.7152698789371357]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5230774512442273, -2.0027913476475314, -2.306639440990428, -1.588965809684868, -1.4821212041295782]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5230774512442273, -2.436911184059407, -2.629630023815071, -2.035458239442101, -1.661640718392102]}}