The ARM Southern Great Plains (SGP) Site

Sisterson, Douglas L; Peppler, Randy A.; Cress, Ted S.; Lamb, Peter; Turner, David D.

doi:10.1175/amsmonographs-d-16-0004.1

Cited by 110 publications

(85 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We use observations of the surface energy balance components, temperatures, and boundary layer height from the Southern Great Plains cropland site at Lamont, OK (36°39′N, 97°37′W; elevation of 312 m), a recognized hot spot of land-atmosphere coupling (Koster, 2004). This site is one of the world's largest climate research facility, and is very well equipped for monitoring surface and atmospheric data (Sisterson et al, 2016). The site is reasonably homogeneous, covered mostly by cropland.…”

Section: Data and Analysismentioning

confidence: 99%

Do Surface and Air Temperatures Contain Similar Imprints of Evaporative Conditions?

Panwar

Kleidon

Renner

2019

Geophysical Research Letters

View full text Add to dashboard Cite

Generally, surface and air temperatures seem closely related but we show that they respond differently to evaporative conditions. We evaluate the temperature increase in response to solar radiation for different evaporative fractions, using observations from the Southern Great Plains. The warming rate of air temperature decreases only by 1.7 × 10−3 K/(W m−2) from dry to moist conditions compared to a stronger reduction by 14 × 10−3 K/(W m−2) for surface temperature. The weaker response of air temperature to evaporative fraction is explained by the larger growth of boundary layer on drier days, which suppresses the warming of air. Estimates based on this explanation reproduce the warming rate of air temperature in observations. Our results show that diurnal variations of surface temperatures contain imprints of evapotranspiration while air temperatures do not. These findings appear important to be considered when using, analyzing, or interpreting temperature data in studies dealing with climate change, hydrology, or land‐atmosphere interactions.

show abstract

Section: Data and Analysismentioning

confidence: 99%

Do Surface and Air Temperatures Contain Similar Imprints of Evaporative Conditions?

Panwar

Kleidon

Renner

2019

Geophysical Research Letters

View full text Add to dashboard Cite

show abstract

“…MOISST was established in 2010 to evaluate and compare existing and emerging in situ and proximal sensing technologies for soil moisture monitoring [13]. The DOE ARM SGP site consists of in situ and remote-sensing instrument clusters arrayed across approximately 143,000 km 2 in north-central Oklahoma and is the largest and most extensive climate research field site in the world, making it an invaluable resource for CLOUD-MAP researchers [14]. This site has a unique suite of atmospheric measurements useful for comparison with measurements from UAS platform sensors.…”

Section: And 2017 Cloud-map Flight Campaign Overviewmentioning

confidence: 99%

Considerations for Atmospheric Measurements with Small Unmanned Aircraft Systems

et al. 2018

View full text Add to dashboard Cite

This paper discusses results of the CLOUD-MAP (Collaboration Leading Operational UAS Development for Meteorology and Atmospheric Physics) project dedicated to developing, fielding, and evaluating integrated small unmanned aircraft systems (sUAS) for enhanced atmospheric physics measurements. The project team includes atmospheric scientists, meteorologists, engineers, computer scientists, geographers, and chemists necessary to evaluate the needs and develop the advanced sensing and imaging, robust autonomous navigation, enhanced data communication, and data management capabilities required to use sUAS in atmospheric physics. Annual integrated evaluation of the systems in coordinated field tests are being used to validate sensor performance while integrated into various sUAS platforms. This paper focuses on aspects related to atmospheric sampling of thermodynamic parameters with sUAS, specifically sensor integration and calibration/validation, particularly as it relates to boundary layer profiling. Validation of sensor output is performed by comparing measurements with known values, including instrumented towers, radiosondes, and other validated sUAS platforms. Experiments to determine the impact of sensor location and vehicle operation have been performed, with sensor aspiration a major factor. Measurements are robust provided that instrument packages are properly mounted in locations that provide adequate air flow and proper solar shielding.

show abstract

“…As is evident, the literature is laden with varying conclusions regarding the nature of land‐atmosphere coupling as encapsulated in SM‐P relationships, many of which are inconclusive and/or contradictory to others. Here we focus on the SGP (rather than other regions, or extending the study globally) for two reasons: i) questions have emerged in recent years about the SGP's designation as a “hot spot” region of land‐atmosphere coupling, and ii) the observational network and data availability/diversity across the domain is unparalleled (Sisterson et al, ), allowing for more thorough and extensive exploration of SM‐P, and more broadly, land‐atmosphere coupling behavior. It is well‐known that soil moisture affects surface flux partitioning (Seneviratne et al, ), convection (Gentine et al, ), and warm season precipitation (Berg et al, ), but it remains less fully understood how surface influences atmosphere under different dynamic conditions.…”

Section: Introductionmentioning

confidence: 99%

Does Soil Moisture Affect Warm Season Precipitation Over the Southern Great Plains?

Welty

Zeng

2018

Geophysical Research Letters

View full text Add to dashboard Cite

Numerous observational and modeling studies have addressed the impact of soil moisture on subsequent precipitation (primarily its initiation), yet consensus remains elusive. Here we quantify the relationship between soil moisture and precipitation amplification over the U.S. Southern Great Plains. Warm season (June–September) days for the 2002–2011 period (with ~1220 total days) are partitioned into three dynamic regimes based on daily water vapor convergence, among which afternoon precipitation event days are identified based on simple criteria. We find that antecedent soil moisture conditions are negatively correlated with subsequent afternoon precipitation magnitude for low dynamic regimes, but this correlation becomes positive for high dynamic regimes. In contrast, this correlation is markedly reduced in magnitude and becomes insignificant when all regime days are considered. These results are also confirmed by analyzing the precipitation histogram and diurnal cycle. Furthermore, different pathways are provided for precipitation amplification for low and high dynamic regimes.

show abstract

The ARM Southern Great Plains (SGP) Site

Cited by 110 publications

References 36 publications

Do Surface and Air Temperatures Contain Similar Imprints of Evaporative Conditions?

Do Surface and Air Temperatures Contain Similar Imprints of Evaporative Conditions?

Considerations for Atmospheric Measurements with Small Unmanned Aircraft Systems

Does Soil Moisture Affect Warm Season Precipitation Over the Southern Great Plains?

Contact Info

Product

Resources

About