Atmospheric Tides Cause Semidiurnal Variation of Marine Air Temperature

Caggiano, J.; Reeves Eyre, J. E. J.; Cronin, M. F.; Zhang, D.; Zhu, J.; Kumar, A.; Wang, W.

doi:10.1029/2024GL113846

i

Atmospheric Tides Cause Semidiurnal Variation of Marine Air Temperature

2025
By Caggiano, J. ; Reeves Eyre, J. E. J. ; Cronin, M. F. ; ...
Series: PMEL contribution no. 5687

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Journal Title:

Geophysical Research Letters
Personal Author:

Caggiano, J. ; Reeves Eyre, J. E. J. ; Cronin, M. F. ; Zhang, D. ; Zhu, J. ; Kumar, A. ; Wang, W.
NOAA Program & Office:

NOS (National Ocean Service) ; NWS (National Weather Service) ; OAR (Oceanic and Atmospheric Research) ; CICOES (Cooperative Institute for Climate, Ocean and Ecosystem Studies) ; CPC (Climate Prediction Center) ; NCEP (National Centers for Environmental Prediction) ; OCS (Office of Coast Survey) ; PMEL (Pacific Marine Environmental Laboratory)
Description:

Surface marine air temperature (MAT) is a fundamental variable in weather and climate applications. However, non‐aspirated MAT sensors, commonly used on ocean observing platforms due to power constraints, often experience radiative heating when the sun is low, producing secondary mid‐morning and mid‐afternoon peaks typically considered erroneous. This study challenges that assumption, showing these peaks can have a geophysical basis. Using a free‐running coupled model, we analyze the relationship between MAT and sea surface temperature (SST). Results indicate that MAT variation includes a significant component from the adiabatic response to pressure changes driven by the semi‐diurnal solar atmospheric tide. This component can cause secondary MAT maxima. Furthermore, it influences air‐sea heat fluxes. The findings emphasize the role of atmospheric tides in air‐sea interactions and caution against uniformly classifying secondary MAT peaks as errors.
Source:

Geophysical Research Letters, 52(19)
Series:

PMEL contribution no. 5687
DOI:

https://doi.org/10.1029/2024GL113846
ISSN:

0094-8276 ; 1944-8007
Format:

pdf
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Funding:

Grant no. NA20OAR4320271
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

urn:sha-512:ca238647d1089a5ee2b678cdc35b567fad8faf8c96061ac3a2c81c174720dfe4b452260c1742b66662686df9470a4f80dae78d1fc2b84b8e7b1a1114fd06bb5b
Download URL:

https://repository.library.noaa.gov/view/noaa/72551/noaa_72551_DS1.pdf
File Type:

[PDF - 2.64 MB ]

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