The emergence of decreasing trends in snowfall frequency and snow depth highlights the challenges arising from shifts in snow regimes. In particular, snow-dependent southern Europe regions may be negatively impacted by such changes. Snow regimes strongly influence the water availability in reservoirs and groundwater. This study presents the world's...
Published in Frontiers in Earth Science
The network of long-term meteorological observations in Southernmost Patagonia is still sparse but crucial to improve our understanding of climatic variability, in particular in the more elevated and partially glaciated Southernmost Andes. Here we present a unique 17-year meteorological record (2000–2016) of four automatic weather stations (AWS) ac...
Remote sensing of soil moisture has reached a level of good maturity and accuracy for which the retrieved products are ready to use in real-world applications. Due to the importance of soil moisture in the partitioning of the water and energy uxes between the land surface and the atmosphere, a wide range of applicationscanbene tfromtheavailabilityo...
The urban heat island (UHI) effect, defined as the air temperature difference between the urban canyon and the nearby rural area, is investigated. Because not all cities around the world are equipped with an extensive measurement network, a need exists for a relatively straightforward equation for the UHI effect. Here, we derive a simple, diagnosti...
This thesis demonstrates that a scintillometer is able to obtain a path-averaged value of the crosswind (i.e., wind component perpendicular to a path). A scintillometer consists of a transmitter and a receiver spaced a few hundred meters to a few kilometres apart. The transmitter emits light with a certain wavelength, which is refracted by scintill...
De zendmast op het dak van Biotechnion onderhoudt een straalverbinding met een mast op het dak van Forum, twee kilometer verderop op de campus. Om regen te meten. Toevalsonderzoek, noemt hoogleraar Hydrologie en kwantitatief waterbeheer Remko Uijlenhoet het hele project. Ontstaan en uitgebouwd door kennis uit toevallige ontmoetingen. Een collega vr...
Aspects of atmospheric turbulence related to scintillometry Atmospheric turbulence is the main vertical transport mechanism in the atmospheric boundary layer. The surface fluxes related to this turbulent transport are the sensible () and latent heat fluxes (). The area-averaged values of and are of interest to evaluate mesoscale numerical weather m...
Nauwkeurige en tijdige neerslagwaarnemingen aan het aardoppervlak zijn cruciaal voor het waterbeheer, de landbouw, de weersverwachting, het klimaatonderzoek en voor grondvalidatie van neerslagschattingen met satellieten. Echter, het overgrote deel van de aarde ontbeert deze waarnemingen en in veel gebieden neemt de dichtheid van het regenmeternetwe...
