Climatic features of the Mediterranean Sea detected by the analysis of the longwave radiative bulk formulae

Schiano, M. E.; Borghini, Mireno; Castellari, Sergio; Luttazzi, C.

doi:10.1007/s00585-000-1482-z

Cited by 8 publications

(4 citation statements)

References 10 publications

(19 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Up to now, this has been the most appropriate formula for the calculation of long-wave radiation within the Mediterranean Sea, although one could argue that this formula is more representative of the western Mediterranean oceanic and meteorological conditions. Actually, very recently, Schiano et al (2000) have stressed the importance of adjusting the Bignami formula to the different areas of the Mediterranean Sea or even inventing a new bulk formulae by taking into account the complex climatic conditions prevailing over the Mediterranean region. However, such an adjustment is out of the scope of the present paper, since it requires an extensive data set of direct net long-wave radiation measurements over the whole Mediterranean basin.…”

Section: Solar Radiationmentioning

confidence: 99%

A one-way nested eddy resolving model of the Aegean and Levantine basins: implementation and climatological runs

2003

View full text Add to dashboard Cite

Abstract. The present study deals with the implementation of an eddy resolving model of the Levantine and Aegean basins and its one-way nesting with a coarse resolution (1/8 • × 1/8 • ) global Mediterranean general circulation model. The modelling effort is done within the framework of the Mediterranean Forecasting System Pilot Project as an initiative towards real-time forecasting within the eastern Mediterranean region.The performed climatological runs of the nested model have shown very promising results on the ability of the model to capture correctly the complex dynamics of the area and at the same time to demonstrate the skill and robustness of the nesting technique applied.A second aim of this study is to prepare a comprehensive climatological surface boundary conditions data set for the Mediterranean Sea. This data set has been developed within the framework of the same research project and is suitable for use in ocean circulation models of the Mediterranean Sea or parts of it. The computation is based on the ECMWF 6-h atmospheric parameters for the period 1979-1993 and a calibrated set of momentum and heat flux bulk formulae resulted from previous studies for the Mediterranean region.

show abstract

Section: Solar Radiationmentioning

confidence: 99%

A one-way nested eddy resolving model of the Aegean and Levantine basins: implementation and climatological runs

2003

View full text Add to dashboard Cite

show abstract

“…In addition, the surrounding orography of this enclosed basin is greatly complicated by the presence of steep high mountains along its Northern coastline, along with large mountainous islands, having a strong influence in the general regional atmospheric circulation, and also producing local intense phenomena. Because of these peculiarities, the atmospheric and marine features of this basin are very different from those of the open ocean, particularly for what concerns the amount of water vapour at the atmospheric surface (Schiano et al, 2000). The Ligurian Sea is the most inland sea of the Mediterranean; the northern part is bounded by Alps, and the Southern part by the Corsica Island.…”

Section: Introductionmentioning

confidence: 99%

Observed development of the vertical structure of the marine boundary layer during the LASIE experiment in the Ligurian Sea

et al. 2010

Self Cite

View full text Add to dashboard Cite

Abstract. In the marine environment, complete datasets describing the surface layer and the vertical structure of the Marine Atmospheric Boundary Layer (MABL), through its entire depth, are less frequent than over land, due to the high cost of measuring campaigns. During the seven days of the Ligurian Air-Sea Interaction Experiment (LASIE), organized by the NATO Undersea Research Centre (NURC) in the Mediterranean Sea, extensive in situ and remote sensing measurements were collected from instruments placed on a spar buoy and a ship. Standard surface meteorological measurements were collected by meteorological sensors mounted on the buoy ODAS Italia1 located in the centre of the Gulf of Genoa. The evolution of the height (z i ) of the MABL was monitored using radiosondes and a ceilometer on board of the N/O Urania.Here, we present the database and an uncommon case study of the evolution of the vertical structure of the MABL, observed by two independent measuring systems: the ceilometer and radiosondes. Following the changes of surface flow conditions, in a sequence of onshore -offshoreonshore wind direction shifting episodes, during the mid part of the campaign, the overall structure of the MABL changed.Correspondence to: A. M. Sempreviva (am.sempreviva@isac.cnr.it) Warm and dry air from land advected over a colder sea, induced a stably stratified Internal Boundary Layer (IBL) and a consequent change in the structure of the vertical profiles of potential temperature and relative humidity.

show abstract

“…Longwave infrared radiation Q b returns some of the absorbed solar energy to the atmosphere, but some of this radiation is scattered by clouds and atmospheric moisture and returns to the ocean. Cloud cover has the greatest influence on the radiation terms (Q b and Q s ), while specific humidity and air and sea surface temperature have less influence on their variations [78][79][80]. The turbulent terms (Q h and Q e ) are influenced by specific humidity, the difference between air and sea surface temperature, and wind speed [81,82].…”

Section: Methods Of Analysismentioning

confidence: 99%

Responses of Satellite Chlorophyll-a to the Extreme Sea Surface Temperatures over the Arabian and Omani Gulf

et al. 2022

View full text Add to dashboard Cite

Extreme events such as Marine Heat Waves (MHWs) and Low Chlorophyll-a (LChl-a) in the ocean have devastating impacts on the marine environment, particularly when they occur simultaneously (i.e., the compound of MHWs and LChl-a events). In this study, we investigate the spatiotemporal variability of MHWs and LChl-a events in the Arabian and Omani Gulf. For this purpose, we used satellite-based high-resolution observations of SST (0.05° × 0.05°; from 1982 to 2020) and chlorophyll-a concentration data (0.04° × 0.04°; from 1998 to 2020). Hourly air temperature, wind, and heat flux components from the European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis (ERA5) were used to explain the link between these extreme events and atmospheric forcings. Moreover, our results revealed that the annual frequency of MHW and LChl-a is related to the El Niño-Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD). The results revealed an average SST warming trend of about 0.44 ± 0.06 °C/decade and 0.32 ± 0.04 °C/decade for the Arabian Gulf (AG) and the Gulf of Oman (OG), respectively. This warming rate was accompanied by MHW frequency and duration trends of 0.97 events/decade and 2.3 days/decade, respectively, for the entire study region from 1982 to 2020. The highest annual MHW frequencies were recorded in 2010 (6 events) and 2020 (5 events) associated with LChl-a frequency values of 4 and 2, respectively. La Niña events in 1999, 2010, 2011, and 2020 were associated with higher frequencies of MHW and LChl-a. The positive phase of IOD coincides with high MHW frequency in 2018 and 2019. The longest compound MHW and LChl-a event with a duration of 42 days was recorded in 2020 at OG. This extreme compound event was associated with wind stress reduction. Our results provide initial insights into the spatiotemporal variability of the compound MHW and LChl-a events that occurred in the AG and OG.

show abstract

Climatic features of the Mediterranean Sea detected by the analysis of the longwave radiative bulk formulae

Cited by 8 publications

References 10 publications

A one-way nested eddy resolving model of the Aegean and Levantine basins: implementation and climatological runs

A one-way nested eddy resolving model of the Aegean and Levantine basins: implementation and climatological runs

Observed development of the vertical structure of the marine boundary layer during the LASIE experiment in the Ligurian Sea

Responses of Satellite Chlorophyll-a to the Extreme Sea Surface Temperatures over the Arabian and Omani Gulf

Contact Info

Product

Resources

About