Abstract
On the basis of long-term dynamics of the July’s vegetation data (NDVI and VCI indices) for 31 ranges of the Tien Shan and Jungarian Alatau arid mountains located in the Eurasia center are found the atmosphere stratification change. The variability of Atlantic Ocean water vapor transport ability over Northern Tien Shan ranges to the Inner Tien Shan was detected. This phenomenon not related to the overall seasonal humidity but is obviously associated with atmosphere stratification regimes. The analyzed period consists of two eras from 2002–2008 and 2008–2019 years, which differ in the regime of accessibility of the Inner Tien Shan ranges for water vapor from Atlantic Ocean. The overall tendency of the changes in 2002–2019 is the increase in the availability ocean water vapor to the Inner Tien Shan ranges. Recorded changes may be due to global air temperature increases and atmospheric processes intensification.
Highlights
Atmospheric patterns transporting moisture from the Atlantic Ocean to the inlands of Eurasia are in complex interaction [1] with arid mountain ranges located in the center of the continent
Smoothed Normalized Difference Vegetation Index (NDVI), e-Moderate Resolution Imaging Spectroradiometer (MODIS) NDVI C6 product has been used in the study, which is publicly available on the website of Early Warning and Environmental Monitoring Program [http://earlywarning.usgs.gov] [9]
The U.S Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center distributes satellite-derived vegetation products generated from the Collection 6 Moderate Resolution Imaging Spectroradiometer (MODIS) instrument flown aboard the Aqua satellite
Summary
Atmospheric patterns transporting moisture from the Atlantic Ocean to the inlands of Eurasia are in complex interaction [1] with arid mountain ranges located in the center of the continent. Changes in atmospheric stratification affect the moisture conditions of the inner ranges of mountains land, which are expressed both in changes in snow deposite [3], and in vegetation condition [4,5]. The first one is in charge of absolute changes in the vegetation state. This is mainly due to the amount of water vapor transported and, partly, to temperature regimes. The second factor is traced by the relationship between vegetation state of the front and inner ranges. This ratio is related to the changes in the atmospheric stratification condition
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