Yazar "Kurnaz, M. Levent" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim
    Yayın
    Assessment of projected changes in air temperature and precipitation over the Mediterranean region via multimodel ensemble mean of CMIP5 models
    (TÜDAV, 2015) Turp, M. Tufan; Öztürk, Tuğba; Türkeş, Murat; Kurnaz, M. Levent
    A multi-model ensemble mean approach was followed in order to investigate the projected changes in near surface air temperatures and precipitation total over the Mediterranean region. Among sixty seven different models of thirty modeling groups all around the world participating in the World Climate Research Programme (WCRP) Coupled Model Intercomparison Project (CMIP5), fourteen models were used. In this respect, we focused on two distinct scenarios (i.e. RCP4.5 and RCP8.5) for three different future periods (i.e. 2016-2035, 2046-2065 and 2081-2100) to examine accurately the foreseen changes in two fundamental climate variables (near surface air temperature and precipitation total) for the Mediterranean region.
  • Küçük Resim
    Yayın
    Impact of climate change and land cover dynamics on nitrate transport to surface waters
    (Springer Science and Business Media Deutschland GmbH, 2024-03) Boyacıoğlu, Hülya; Günaçtı, Mert Can; Barbaros, Filiz; Gül, Ali; Gül, Gülay Onuşluel; Öztürk, Tuğba; Kurnaz, M. Levent
    The study investigated the impact of climate and land cover change on water quality. The novel contribution of the study was to investigate the individual and combined impacts of climate and land cover change on water quality with high spatial and temporal resolution in a basin in Turkey. The global circulation model MPI-ESM-MR was dynamically downscaled to 10-km resolution under the RCP8.5 emission scenario. The Soil and Water Assessment Tool (SWAT) was used to model stream flow and nitrate loads. The land cover model outputs that were produced by the Land Change Modeler (LCM) were used for these simulation studies. Results revealed that decreasing precipitation intensity driven by climate change could significantly reduce nitrate transport to surface waters. In the 2075–2100 period, nitrate-nitrogen (NO3-N) loads transported to surface water decreased by more than 75%. Furthermore, the transition predominantly from forestry to pastoral farming systems increased loads by about 6%. The study results indicated that fine-resolution land use and climate data lead to better model performance. Environmental managers can also benefit greatly from the LCM-based forecast of land use changes and the SWAT model’s attribution of changes in water quality to land use changes. Graphical abstract: (Figure presented.).
  • Küçük Resim
    Yayın
    Modeling of near future air temperature and precipitation climatology of Turkey and surrounding regions
    (TÜDAV, 2015) Turp, M. Tufan; Öztürk, Tuğba; Türkeş, Murat; Kurnaz, M. Levent
    Projected future changes in mean air temperature and precipitation for 2020 – 2050 were assessed with respect to the control period 1970 – 2000 via regional climate model simulations, using a regional climate model driven by three different global climate models, dynamically downscaled to 50 km for Turkey and surrounding regions, using the IPCC emission scenario outputs of global climate models.