The variability of temperature and precipitation is regarded as one of the main characteristics of the climate.Precipitation and its results, especially results such as droughts, vary on different temporal and spatial scales. Thepurpose of this paper is to determine the frequency of the inter-annual variability of the driest month in north-westIran. In order to obtain the best results, we used ...

Sapropels deposited in the Mediterranean Sea provide high resolution records of past oceanographic changes. Previous studies have found abrupt transitions chemical composition these sediments. We present a transient box model that provides potential mechanism for transitions. The high-frequency variability is result fluxes stopping or changing direction, causing relaxation towards new equilibri...