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Title: Regional Moisture Budget and Land-Atmosphere Coupling Over the U.S. Southern Great Plains Inferred From the ARM Long-Term Observations

Abstract

Ten–year warm–season (May–August) observations at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site are used to examine the large–scale atmospheric moisture budget and the strength of land–atmosphere coupling. Atmospheric moisture budget components, computed from the ARM variational analysis data, are compared between different wet/dry scenarios and convection regimes. Consistent with previous studies, large–scale moisture flux convergence dominates the SGP regional moisture budget on the daily time scale, but surface evaporation does play a more prominent role on late–afternoon deep convection days. Moreover, the relationship between moisture flux convergence and precipitation increases significantly from dry year to wet years. The land–atmosphere coupling strength is quantified for local convective events within the “Local L–A Coupling Process Chain” (Santanello et al., 2018, https://doi.org/10.1175/BAMS–D–17–0001.1). The impact of land surface on the evolution of planetary boundary layer is highly dependent on the vegetation leaf area index. A significantly larger surface sensible heat flux is found over the SGP forest region in midsummer, which is accompanied by a much higher planetary boundary layer development and a large increase in shallow cumulus cloud fraction. Here the significant relationship between afternoon precipitation and surface turbulent flux only exists in the northeast part of the ARM SGPmore » site, which is mainly covered by grassland/pasture.« less

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Stony Brook Univ., Stony Brook, NY (United States). School of Marine and Atmospheric Sciences
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1576909
Alternate Identifier(s):
OSTI ID: 1560329
Report Number(s):
LLNL-JRNL-769070
Journal ID: ISSN 2169-897X; 960144
Grant/Contract Number:  
AC52-07NA27344; AC52‐07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
Journal Volume: 124; Journal Issue: 17-18; Journal ID: ISSN 2169-897X
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES

Citation Formats

Tao, Cheng, Zhang, Yunyan, Tang, Shuaiqi, Tang, Qi, Ma, Hsi ‐Yen, Xie, Shaocheng, and Zhang, Minghua. Regional Moisture Budget and Land-Atmosphere Coupling Over the U.S. Southern Great Plains Inferred From the ARM Long-Term Observations. United States: N. p., 2019. Web. https://doi.org/10.1029/2019JD030585.
Tao, Cheng, Zhang, Yunyan, Tang, Shuaiqi, Tang, Qi, Ma, Hsi ‐Yen, Xie, Shaocheng, & Zhang, Minghua. Regional Moisture Budget and Land-Atmosphere Coupling Over the U.S. Southern Great Plains Inferred From the ARM Long-Term Observations. United States. https://doi.org/10.1029/2019JD030585
Tao, Cheng, Zhang, Yunyan, Tang, Shuaiqi, Tang, Qi, Ma, Hsi ‐Yen, Xie, Shaocheng, and Zhang, Minghua. Fri . "Regional Moisture Budget and Land-Atmosphere Coupling Over the U.S. Southern Great Plains Inferred From the ARM Long-Term Observations". United States. https://doi.org/10.1029/2019JD030585. https://www.osti.gov/servlets/purl/1576909.
@article{osti_1576909,
title = {Regional Moisture Budget and Land-Atmosphere Coupling Over the U.S. Southern Great Plains Inferred From the ARM Long-Term Observations},
author = {Tao, Cheng and Zhang, Yunyan and Tang, Shuaiqi and Tang, Qi and Ma, Hsi ‐Yen and Xie, Shaocheng and Zhang, Minghua},
abstractNote = {Ten–year warm–season (May–August) observations at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site are used to examine the large–scale atmospheric moisture budget and the strength of land–atmosphere coupling. Atmospheric moisture budget components, computed from the ARM variational analysis data, are compared between different wet/dry scenarios and convection regimes. Consistent with previous studies, large–scale moisture flux convergence dominates the SGP regional moisture budget on the daily time scale, but surface evaporation does play a more prominent role on late–afternoon deep convection days. Moreover, the relationship between moisture flux convergence and precipitation increases significantly from dry year to wet years. The land–atmosphere coupling strength is quantified for local convective events within the “Local L–A Coupling Process Chain” (Santanello et al., 2018, https://doi.org/10.1175/BAMS–D–17–0001.1). The impact of land surface on the evolution of planetary boundary layer is highly dependent on the vegetation leaf area index. A significantly larger surface sensible heat flux is found over the SGP forest region in midsummer, which is accompanied by a much higher planetary boundary layer development and a large increase in shallow cumulus cloud fraction. Here the significant relationship between afternoon precipitation and surface turbulent flux only exists in the northeast part of the ARM SGP site, which is mainly covered by grassland/pasture.},
doi = {10.1029/2019JD030585},
journal = {Journal of Geophysical Research: Atmospheres},
number = 17-18,
volume = 124,
place = {United States},
year = {2019},
month = {8}
}

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    Works referencing / citing this record:

    Interactions between cumulus convection and its environment as revealed by the MC3E sounding array: Convection with its environment
    journal, October 2014

    • Xie, Shaocheng; Zhang, Yunyan; Giangrande, Scott E.
    • Journal of Geophysical Research: Atmospheres, Vol. 119, Issue 20
    • DOI: 10.1002/2014jd022011

    Vegetation controls on surface heat flux partitioning, and land-atmosphere coupling: VEGETATION AND LAND-ATMOSPHERE COUPLING
    journal, November 2015

    • Williams, Ian N.; Torn, Margaret S.
    • Geophysical Research Letters, Vol. 42, Issue 21
    • DOI: 10.1002/2015gl066305

    The influence of land cover on surface energy partitioning and evaporative fraction regimes in the U.S. Southern Great Plains: Influence of Land Cover in U.S. SGP
    journal, June 2017

    • Bagley, Justin E.; Kueppers, Lara M.; Billesbach, Dave P.
    • Journal of Geophysical Research: Atmospheres, Vol. 122, Issue 11
    • DOI: 10.1002/2017jd026740

    Using ARM Observations to Evaluate Climate Model Simulations of Land-Atmosphere Coupling on the U.S. Southern Great Plains: Model LAC Evaluation by ARM Data
    journal, November 2017

    • Phillips, Thomas J.; Klein, Stephen A.; Ma, Hsi-Yen
    • Journal of Geophysical Research: Atmospheres, Vol. 122, Issue 21
    • DOI: 10.1002/2017jd027141

    Impact of soil moisture on the development of a Sahelian mesoscale convective system: a case-study from the AMMA Special Observing Period
    journal, August 2009

    • Taylor, Christopher M.; Harris, Phil P.; Parker, Douglas J.
    • Quarterly Journal of the Royal Meteorological Society, Vol. 136, Issue S1
    • DOI: 10.1002/qj.465

    Evaluation of NASA GISS post-CMIP5 single column model simulated clouds and precipitation using ARM Southern Great Plains observations
    journal, January 2017


    Investigating soil moisture–climate interactions in a changing climate: A review
    journal, May 2010


    Role of eastward propagating convection systems in the diurnal cycle and seasonal mean of summertime rainfall over the U.S. Great Plains
    journal, January 2006

    • Jiang, Xianan; Lau, Ngar-Cheung; Klein, Stephen A.
    • Geophysical Research Letters, Vol. 33, Issue 19
    • DOI: 10.1029/2006gl027022

    Heterogeneity in Warm-Season Land-Atmosphere Coupling Over the U.S. Southern Great Plains
    journal, August 2018

    • Tang, Qi; Xie, Shaocheng; Zhang, Yunyan
    • Journal of Geophysical Research: Atmospheres, Vol. 123, Issue 15
    • DOI: 10.1029/2018jd028463

    Differences in Eddy‐Correlation and Energy‐Balance Surface Turbulent Heat Flux Measurements and Their Impacts on the Large‐Scale Forcing Fields at the ARM SGP Site
    journal, March 2019

    • Tang, Shuaiqi; Xie, Shaocheng; Zhang, Minghua
    • Journal of Geophysical Research: Atmospheres, Vol. 124, Issue 6
    • DOI: 10.1029/2018jd029689

    Afternoon rain more likely over drier soils
    journal, September 2012

    • Taylor, Christopher M.; de Jeu, Richard A. M.; Guichard, Françoise
    • Nature, Vol. 489, Issue 7416
    • DOI: 10.1038/nature11377

    Observational evidence for cloud cover enhancement over western European forests
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    • Teuling, Adriaan J.; Taylor, Christopher M.; Meirink, Jan Fokke
    • Nature Communications, Vol. 8, Issue 1
    • DOI: 10.1038/ncomms14065

    Probability of afternoon precipitation in eastern United States and Mexico enhanced by high evaporation
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    • Nature Geoscience, Vol. 4, Issue 7
    • DOI: 10.1038/ngeo1174

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