{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:26.872113", "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": "2012-Sep-26_to_2012-Oct-01_286.0_-12.5"}, "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": 2012090000955}, "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": "September 26 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 299808.31968618825}, "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", "Peru"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.W.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": -12.5}, "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": 286.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "286.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 282.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 289.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.04, -6.5], [-78.25, -6.0], [-78.03, -5.47], [-77.5, -5.25], [-76.97, -5.47], [-76.82, -5.82], [-76.47, -5.97], [-76.3, -6.38], [-76.18, -6.32], [-76.03, -5.97], [-75.5, -5.75], [-75.25, -5.85], [-75.18, -5.82], [-75.03, -5.47], [-74.5, -5.25], [-74.25, -5.35], [-74.0, -5.25], [-73.75, -5.35], [-73.68, -5.32], [-73.53, -4.97], [-73.0, -4.75], [-72.75, -4.85], [-72.5, -4.75], [-71.97, -4.97], [-71.82, -5.32], [-71.75, -5.35], [-71.5, -5.25], [-71.25, -5.35], [-71.0, -5.25], [-70.75, -5.35], [-70.5, -5.25], [-69.97, -5.47], [-69.75, -6.0], [-69.97, -6.53], [-70.32, -6.68], [-70.35, -6.75], [-70.25, -7.0], [-70.35, -7.25], [-70.25, -7.5], [-70.35, -7.75], [-70.25, -8.0], [-70.47, -8.53], [-71.0, -8.75], [-71.25, -8.65], [-71.32, -8.68], [-71.35, -8.75], [-71.25, -9.0], [-71.47, -9.53], [-71.82, -9.68], [-71.97, -10.03], [-72.5, -10.25], [-72.75, -10.15], [-73.0, -10.25], [-73.25, -10.15], [-73.32, -10.18], [-73.47, -10.53], [-73.82, -10.68], [-73.96, -11.0], [-73.82, -11.32], [-73.75, -11.35], [-73.5, -11.25], [-72.97, -11.47], [-72.82, -11.82], [-72.47, -11.97], [-72.25, -12.5], [-72.47, -13.03], [-73.0, -13.25], [-73.5, -13.04], [-74.0, -13.25], [-74.53, -13.03], [-74.75, -12.5], [-74.65, -12.25], [-74.68, -12.18], [-75.03, -12.03], [-75.18, -11.68], [-75.53, -11.53], [-75.68, -11.18], [-76.03, -11.03], [-76.25, -10.5], [-76.15, -10.25], [-76.18, -10.18], [-76.53, -10.03], [-76.68, -9.68], [-77.03, -9.53], [-77.25, -9.0], [-77.12, -8.7], [-77.53, -8.53], [-77.68, -8.18], [-78.03, -8.03], [-78.25, -7.5], [-78.15, -7.25], [-78.25, -7.0], [-78.04, -6.5]], [[-76.68, -7.32], [-76.65, -7.25], [-76.7, -7.12], [-76.82, -7.18], [-76.85, -7.25], [-76.82, -7.32], [-76.75, -7.35], [-76.68, -7.32]]]]}, "2012-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.04, -6.5], [-78.25, -6.0], [-78.03, -5.47], [-77.5, -5.25], [-76.97, -5.47], [-76.82, -5.82], [-76.47, -5.97], [-76.3, -6.38], [-76.18, -6.32], [-76.03, -5.97], [-75.5, -5.75], [-75.25, -5.85], [-75.18, -5.82], [-75.03, -5.47], [-74.5, -5.25], [-74.25, -5.35], [-74.0, -5.25], [-73.75, -5.35], [-73.68, -5.32], [-73.53, -4.97], [-73.0, -4.75], [-72.75, -4.85], [-72.5, -4.75], [-71.97, -4.97], [-71.82, -5.32], [-71.75, -5.35], [-71.5, -5.25], [-71.25, -5.35], [-71.0, -5.25], [-70.75, -5.35], [-70.5, -5.25], [-69.97, -5.47], [-69.75, -6.0], [-69.97, -6.53], [-70.32, -6.68], [-70.35, -6.75], [-70.25, -7.0], [-70.35, -7.25], [-70.25, -7.5], [-70.35, -7.75], [-70.25, -8.0], [-70.47, -8.53], [-71.0, -8.75], [-71.25, -8.65], [-71.32, -8.68], [-71.35, -8.75], [-71.25, -9.0], [-71.47, -9.53], [-71.82, -9.68], [-71.97, -10.03], [-72.5, -10.25], [-72.75, -10.15], [-73.0, -10.25], [-73.25, -10.15], [-73.32, -10.18], [-73.47, -10.53], [-73.82, -10.68], [-73.96, -11.0], [-73.82, -11.32], [-73.75, -11.35], [-73.5, -11.25], [-72.97, -11.47], [-72.82, -11.82], [-72.47, -11.97], [-72.25, -12.5], [-72.47, -13.03], [-73.0, -13.25], [-73.5, -13.04], [-74.0, -13.25], [-74.53, -13.03], [-74.68, -12.68], [-75.03, -12.53], [-75.25, -12.0], [-75.15, -11.75], [-75.18, -11.68], [-75.53, -11.53], [-75.68, -11.18], [-76.03, -11.03], [-76.25, -10.5], [-76.15, -10.25], [-76.18, -10.18], [-76.53, -10.03], [-76.68, -9.68], [-77.03, -9.53], [-77.25, -9.0], [-77.12, -8.7], [-77.53, -8.53], [-77.68, -8.18], [-78.03, -8.03], [-78.25, -7.5], [-78.15, -7.25], [-78.25, -7.0], [-78.04, -6.5]], [[-76.68, -7.32], [-76.65, -7.25], [-76.7, -7.12], [-76.82, -7.18], [-76.85, -7.25], [-76.82, -7.32], [-76.75, -7.35], [-76.68, -7.32]]]]}, "2012-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.04, -6.5], [-78.25, -6.0], [-78.03, -5.47], [-77.5, -5.25], [-76.97, -5.47], [-76.82, -5.82], [-76.47, -5.97], [-76.3, -6.38], [-76.18, -6.32], [-76.03, -5.97], [-75.5, -5.75], [-75.25, -5.85], [-75.18, -5.82], [-75.03, -5.47], [-74.5, -5.25], [-74.25, -5.35], [-74.0, -5.25], [-73.75, -5.35], [-73.68, -5.32], [-73.53, -4.97], [-73.0, -4.75], [-72.75, -4.85], [-72.5, -4.75], [-71.97, -4.97], [-71.82, -5.32], [-71.75, -5.35], [-71.5, -5.25], [-71.25, -5.35], [-71.0, -5.25], [-70.75, -5.35], [-70.5, -5.25], [-69.97, -5.47], [-69.75, -6.0], [-69.97, -6.53], [-70.32, -6.68], [-70.35, -6.75], [-70.25, -7.0], [-70.35, -7.25], [-70.25, -7.5], [-70.35, -7.75], [-70.25, -8.0], [-70.47, -8.53], [-71.0, -8.75], [-71.25, -8.65], [-71.32, -8.68], [-71.35, -8.75], [-71.25, -9.0], [-71.47, -9.53], [-71.82, -9.68], [-71.97, -10.03], [-72.5, -10.25], [-72.75, -10.15], [-73.0, -10.25], [-73.25, -10.15], [-73.32, -10.18], [-73.47, -10.53], [-73.82, -10.68], [-73.96, -11.0], [-73.82, -11.32], [-73.75, -11.35], [-73.5, -11.25], [-72.97, -11.47], [-72.82, -11.82], [-72.47, -11.97], [-72.25, -12.5], [-72.47, -13.03], [-73.0, -13.25], [-73.5, -13.04], [-74.0, -13.25], [-74.53, -13.03], [-74.68, -12.68], [-75.03, -12.53], [-75.25, -12.0], [-75.15, -11.75], [-75.18, -11.68], [-75.53, -11.53], [-75.68, -11.18], [-76.03, -11.03], [-76.25, -10.5], [-76.15, -10.25], [-76.18, -10.18], [-76.53, -10.03], [-76.68, -9.68], [-77.03, -9.53], [-77.25, -9.0], [-77.12, -8.7], [-77.53, -8.53], [-77.68, -8.18], [-78.03, -8.03], [-78.25, -7.5], [-78.15, -7.25], [-78.25, -7.0], [-78.04, -6.5]], [[-76.68, -7.32], [-76.65, -7.25], [-76.7, -7.12], [-76.82, -7.18], [-76.85, -7.25], [-76.82, -7.32], [-76.75, -7.35], [-76.68, -7.32]]]]}, "2012-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -12.0], [-75.03, -11.47], [-74.5, -11.25], [-74.25, -11.35], [-74.0, -11.25], [-73.75, -11.35], [-73.5, -11.25], [-72.97, -11.47], [-72.82, -11.82], [-72.47, -11.97], [-72.25, -12.5], [-72.47, -13.03], [-73.0, -13.25], [-73.5, -13.04], [-74.0, -13.25], [-74.53, -13.03], [-74.68, -12.68], [-75.03, -12.53], [-75.25, -12.0]]]]}, "2012-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -12.0], [-75.03, -11.47], [-74.5, -11.25], [-74.25, -11.35], [-74.0, -11.25], [-73.47, -11.47], [-73.25, -12.0], [-73.35, -12.25], [-73.25, -12.5], [-73.47, -13.03], [-74.0, -13.25], [-74.53, -13.03], [-74.68, -12.68], [-75.03, -12.53], [-75.25, -12.0]]]]}, "2012-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.5, -11.25], [-73.97, -11.47], [-73.75, -12.0], [-73.97, -12.53], [-74.5, -12.75], [-75.03, -12.53], [-75.25, -12.0], [-75.03, -11.47], [-74.5, -11.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.535965977162448}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.48651789887325}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.03050602696794, 20.45270612101666, 22.178480492286553, 16.312885990131008, 16.05535142352636, 11.518854407219635]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.907984547975104, 10.865009865877198, 11.0428277485953, 10.62208128556557, 10.950310555626118, 11.518854407219635]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.091087861070198, -3.5636733793802047, -1.9024878062125712, -1.4717284610572166, -1.3948793783064843, -0.8658063076153439]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.972533588707279, -5.535965977162448, -2.7116132416558116, -1.6766389878687278, -1.7667064827512036, -0.8658063076153439]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7343282602719894, -2.926437922376181, -1.6326884726077595, -1.9127761902128355, -1.886594040369534, -1.3515847147264597]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.602574853084747, -3.8450006662204945, -2.480879938412867, -2.5573061511503923, -2.157229379601705, -1.3515847147264597]}}