نتایج جستجو برای: precipitation for april
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The Moravian floods in July 1997 have killed 49 people, affected 536 settlements, 29 000 houses and cost over 2.5 billion USD. A question arises whether the hydrological event (or the preceding meteorological one) can be predicted. In order to foresee the magnitude of catastrophic events we extrapolate historical data which has an impact on the construction in the vicinity of the rivers, insura...
Three previous reports of microgeographical variation of glycerate dehydrogenase (Gly) frequencies in piñon, Pinus edulis, established the hypothesis that Gly frequencies contribute to adaptation to heterogeneous environments, specifically to variation in soil moisture. In each of these studies, the frequency of the Gly-3 allele or of Gly-33 homozygotes was higher on dry sites than on nearby mo...
the madden julian oscillation (mjo) is known as the primary mode of large-scale inter-seasonal variability in tropical regions that affects equatorial and extra-tropical climates. it was characterized as a 45-60 day wave that develops over the tropical indian ocean and then travels east across the tropics at 5-10 m/s. the phenomenon has a frequency of 6-12 events per year associated with a peri...
The International Research Institute (IRI) for Climate Prediction produces operational outlooks for seasonal (3-month periods) average temperature and for total precipitation, at lead times of 0 and 3 months (Mason et al. 1999). These outlooks are probabilistic in nature and subjectively produced. During the 1997–2000 period considered here, two seasonal forecasts, at 0and 3month lead times, we...
In the absence of an intrinsic dipole magnetic field, Mars’ O planetary ions are accelerated by the solar wind. Because of their large gyroradius, a population of these planetary ions can precipitate back into Mars’ upper atmosphere with enough energy to eject neutrals into space via collision. This process, referred to as sputtering, may have been a dominant atmospheric loss process during ear...
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