Statistical Characterization of the Observed Cold Wake Induced by North Atlantic Hurricanes
Open Access
- 12 October 2019
- journal article
- research article
- Published by MDPI AG in Remote Sensing
- Vol. 11 (20), 2368
- https://doi.org/10.3390/rs11202368
Abstract
This work quantifies the magnitude, spatial structure, and temporal evolution of the cold wake left by North Atlantic hurricanes. To this end we composited the sea surface temperature anomalies (SSTA) induced by hurricane observations from 2002 to 2018 derived from the international best track archive for climate stewardship (IBTrACS). Cold wake characteristics were distinguished by a set of hurricane and oceanic properties: Hurricane translation speed and intensity, and the characteristics of the upper ocean stratification represented by two barrier layer metrics: Barrier layer thickness (BLT) and barrier layer potential energy (BLPE). The contribution of the above properties to the amplitude of the cold wake was analyzed individually and in combination. The mean magnitude of the hurricane-induced cooling was of 1.7 °C when all hurricanes without any distinction were considered, and the largest cooling was found for slow-moving, strong hurricanes passing over thinner barrier layers, with a cooling above 3.5 °C with respect to pre-storm sea surface temperature (SST) conditions. On average the cold wake needed about 60 days to disappear and experienced a strong decay in the first 20 days, when the magnitude of the cold wake had decreased by 80%. Differences between the cold wakes yielded by mostly infrared and merged infrared and microwave remote sensed SST data were also evaluated, with an overall relative underestimation of the hurricane-induced cooling of about 0.4 °C for infrared-mostly data.This publication has 53 references indexed in Scilit:
- 100 Years of Progress in Tropical Cyclone ResearchMeteorological Monographs, 2018
- Subtropical High predictability establishes a promising way for monsoon and tropical storm predictionsProceedings of the National Academy of Sciences of the United States of America, 2013
- Modeled sensitivity of upper thermocline properties to tropical cyclone winds and possible feedbacks on the Hadley circulationGeophysical Research Letters, 2010
- Satellite Imagery of Sea Surface Temperature Cooling in the Wake of Hurricane Edouard (1996)Monthly Weather Review, 1997
- Upper ocean response to Hurricane GilbertJournal of Geophysical Research: Oceans, 1992
- Satellite observations of sea surface cooling by hurricanesJournal of Geophysical Research: Oceans, 1986
- Water temperature variations resulting from hurricanesJournal of Geophysical Research, 1968
- Observed Ocean Conditions and Hurricane Hilda, 1964Journal of the Atmospheric Sciences, 1967
- Relationship of central pressure of hurricane Esther (1961) and the sea surface temperature fieldTellus A: Dynamic Meteorology and Oceanography, 1962
- HURRICANES AND THE SEA-SURFACE TEMPERATURE FIELDJournal of Meteorology, 1958