Blar i Institutt for bygg- og miljøteknikk på emneord "Klimaendringer"

Viser treff 1-9 av 9

    • Homogenizing GPS Integrated Water Vapor Time Series: Benchmarking Break Detection Methods on Synthetic Data Sets 

      Van Malderen, Roeland; Pottiaux, E.; Klos, A.; Domonkos, P.; Elias, M.; Ning, T.; Bock, O.; Guijarro, J.; Alshawaf, F.; Hoseini, Mostafa; Quarello, A.; Lebarbier, E.; Chimani, B.; Tornatore, V.; Zengin Kazancı, S.; Bogusz, J. (Peer reviewed; Journal article, 2020)
      We assess the performance of different break detection methods on three sets of benchmark data sets, each consisting of 120 daily time series of integrated water vapor differences. These differences are generated from the ...

    • Hydropower Production in Future Climate Scenarios: The Case for Kwanza River, Angola 

      Hamududu, Byman Hikanyona; Killingtveit, Ånund (Journal article; Peer reviewed, 2016)
      Climate change is altering hydrological processes with varying degrees in various regions of the world and remains a threat to water resources projects in southern Africa. The likely negative impacts of changes in Africa ...

    • Hydropower Production in Future Climate Scenarios; the Case for the Zambezi River 

      Hamududu, Byman Hikanyona; Killingtveit, Ånund (Journal article; Peer reviewed, 2016)
      Climate change remains a threat to water resources projects in southern Africa where impacts resulting from changes in climate are projected to be negative and worse than in most other regions of the world. This work ...

    • Mass balance and mass loss acceleration of the Greenland ice sheet (2002 – 2011) from GRACE gravity data 

      Joodaki, Gholamreza; Nahavandchi, Hossein (Journal article; Peer reviewed, 2012)
      We examine the magnitude and acceleration of the Greenland ice sheet mass loss between 2002 and 2011. We use monthly observations of time-variable gravity from the Gravity Recovery and Climate Experiment (GRACE) satellite ...

    • Mass loss of the Greenland ice sheet from GRACE time-variable gravity measurements 

      Joodaki, Gholamreza; Nahavandchi, Hossein (Peer reviewed; Journal article, 2012)
      The Gravity Recovery and Climate Experiment (GRACE) satellite data is used to estimate the rate of ice mass variability over Greenland. To do this, monthly GRACE level 2 Release-04 (RL04) data from three different processing ...

    • Mean Sea Surface and ocean circulation in North Atlantic and the Arctic Sea 

      Ghazavi, Kourosh; Nahavandchi, Hossein (Journal article; Peer reviewed, 2011)
      High resolution Mean Sea Surface (MSS) model and its error estimation over the study region (56°N

    • Seasonal variation analysis of Greenland ice mass time-series 

      Shamshiri, Roghayeh; Nahavandchi, Hossein; Joodaki, Gholamreza (Journal article; Peer reviewed, 2017)
      We derive the mass balance of Greenland ice sheet from the Gravity Recovery and Climate Experiment (GRACE) for the period January 2003–October 2014. We have found an ice mass loss with peak amplitude of −15 cm/yr in the ...

    • Steric sea level changes from ENVISAT and GRACE in the Nordic Seas 

      Joodaki, Gholamreza; Nahavandchi, Hossein; Ghazavi, Kourosh (Peer reviewed; Journal article, 2013)
      Steric sea level changes are estimated over the Nordic Seas using ENVISAT (Environmental Satellite) altimetry and GRACE (Gravity Recovery and Climate Experiment) gravity data. We have used altimetry data from the ENVISAT ...

    • Updated OCTAS geoid in the northern North Atlantic - OCTAS07 

      Omang, Ove Christian Dahl; Hunegnaw, Addisu; Solheim, Dag; Lysaker, Dagny; Ghazavi, Kourosh; Nahavandchi, Hossein (Peer reviewed; Journal article, 2008)
      A new gravimetric geoid (OCTAS07v2) is generated using Stokes’ formula with gravity data as input. As local gravity data, a combination of land gravity data, new and old airborne gravity data, and adjusted marine gravity ...