Correlation between air-sea heat fluxes over the Aegean Sea and the total precipitable water over Europe and North Africa

Papadopoulos, Vassilis P.; Bartzokas, A.; Chronis, Themis; Ruiz, Simón; Zarokanellos, Nikolaos; Ferentinos, G.

doi:10.5194/asr-6-63-2011

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…Air-sea heat fluxes are critical for the climate regulation and affect a number of significant processes for both ocean and atmosphere from the global to the local scale. They govern the oceanic and atmospheric circulation and they are important inputs in the numerical weather prediction models [2]. Energy arriving from the Sun is redistributed over the Earth mainly by the motions of the atmosphere and ocean.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Net Surface Heat Flux of Eastern Harbor, Alexandria Egypt using Different Techniques

Hussein

Mohamed

2016

AIR

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In this study, two different techniques have been applied to estimate the net surface heat flux (NSHF) of the Eastern Harbor. The first one based on equilibrium temperature which is easy and direct way to calculate NSHF from the sea in comparison to the traditional method (Bulk aerodynamic formula). This technique is based on short wave radiation, net long wave radiation and latent and sensible heat flux. Daily variability of NSHF has been studied during winter, spring and summer 2009-2010 and winter and summer 2010-2011, the surface meteorological data were collected from Nozha Air Port and sea surface temperature using the immersed temperature sensor at NIOF site. The out put NSHF values of the two techniques have the same trend and there are high correlation between them reached to 94% in winter 2009, 87% spring 2009, 97% summer 2010, 96% winter 2010 and 98% summer 2011. This gives us a good reason to apply the first technique to get NSHF. There is more heat loss (negative NSHF) during many days of the winter season and more heat gain (positive NSHF) during spring and summer seasons. Thermal Original Research Articleexchange coefficient varies from 6.55 (W m -2 °C -1 ) to 22.4 (W m -2 °C -1 ) and it has a direct relationship with wind speed and inverse relationship with (NSHF) and equilibrium temperature.

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Section: Introductionmentioning

confidence: 99%

Estimation of Net Surface Heat Flux of Eastern Harbor, Alexandria Egypt using Different Techniques

Hussein

Mohamed

2016

AIR

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“…These comparisons consider the closest to the buoy grid points and involve statistical analysis such as correlation coefficients, biases, and rms errors. The results indicate that, over the Aegean Sea, the Mediterranean HIPOCAS (0.58 3 0.58 resolution) is the most appropriate dataset for the study of shortwave and longwave radiation and the OAFlux (18 3 18 resolution) for the latent and sensible heat (Papadopoulos et al 2010). Since the Aegean Sea approximately covers 68 in latitude and 48 in longitude, the spatial resolution of the selected datasets is considered adequate for depicting the regional heat fluxes characteristics.…”

Section: Datasetsmentioning

confidence: 96%

“…In many cases, the atmospheric variables and the surface heat exchanges exhibit a strong relationship. For example, the correlation between total precipitable water over Europe and North Africa and surface heat exchanges over the Aegean Sea is particularly strong, especially during the cold season of the year (Papadopoulos et al 2011). Conversely, the turbulent fluxes in the western Mediterranean affect the precipitation regime over the eastern Mediterranean (Lolis et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Factors Regulating the Air–Sea Heat Fluxes Regime over the Aegean Sea

et al. 2012

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The authors examine the impact of low-frequency atmospheric forcings on the air-sea heat fluxes over the Aegean Sea. The correlation between the air-sea heat flux components and three established [North Atlantic Oscillation (NAO), east Atlantic-western Russian pattern (EAWR), and North Sea-Caspian pattern (NCP)] and two testing climatic indices of potential effect over the eastern Mediterranean Sea region underlines significant discrepancies between the radiative (shortwave and longwave radiation) and the turbulent (sensible and latent heat) components. The NAO index affects the air-sea heat fluxes over the Aegean Sea region much less than the two innovative indices, the ''Mediterranean index'' and the ''Eastern Europe index,'' which play more effective roles. Moreover, the influence of the sea level atmospheric pressure (SLP) variability over an extended area (Europe and North Africa) on surface fluxes regime is investigated. The SLP anomalies are corroborated as a prominent regulating factor of the air-sea heat fluxes over the Aegean Sea region, especially during the cold season of the year. The analysis of the extreme values in the heat exchange anomalies for the period 1958-2001 highlights the role of SLP field on determining the air-sea heat fluxes regime, mainly during winter, when, occasionally, large amounts of heat loss from the sea surface trigger the mechanism of intermediate-and deep-water formation. It is suggested that wind regime and turbulent components are the modulators of the net air-sea heat flux anomalies throughout the year.

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Correlation between air-sea heat fluxes over the Aegean Sea and the total precipitable water over Europe and North Africa

Cited by 2 publications

References 10 publications

Estimation of Net Surface Heat Flux of Eastern Harbor, Alexandria Egypt using Different Techniques

Estimation of Net Surface Heat Flux of Eastern Harbor, Alexandria Egypt using Different Techniques

Factors Regulating the Air–Sea Heat Fluxes Regime over the Aegean Sea

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