This paper presents a hypothesis regarding the fundamental role of soil moisture conditions in land-atmosphere interactions. We propose that wet soil moisture conditions over any large region should be associated with relatively large boundary layer moist static energy, which favors the occurrence of more rainfall. Since soil moisture conditions themselves reflect past occurrence of rainfall, t...

In this paper a comparative study of two measurement campaigns carried out in Barcelona, Spain, and Pozna , Poland, to identify spectrum occupancy in different bands, is presented. In both cases the measurement setup was harmonized to obtain comparable results. The problem of efficient noise floor estimation was also considered and a pragmatic approach that takes into account both internal and ...

The modern concept of the evolution Mars assumes that life could potentially have originated on planet Mars, possibly during end late heavy bombardment, and then be transferred to other planets. Since then, physical chemical conditions changed now strongly limit presence terrestrial-like forms. These adverse include scarcity liquid water (although brine solutions may exist), low temperature atm...

This thesis reports on the effects of UVB radiation on charophycean algae and bryophytes. Due to thinning of the ozone layer, more UVB radiation is reaching the earth surface. UVB radiation affects life on earth. Since the discovery of the ozone hole many studies focused on the effects of UV(B) radiation on terrestrial and marine organisms. Studies that focused on the effects on plants showed d...