Characteristics of climatic variation from the perspective of “the Silk
Road Economic Belt”
Abstract
The variance tendency of climatic and spatial-temporal equilibrium
characteristics of major cities along the SREB were systematically
described through moving mean method, Kriging interpolation method,
Bernaola-Galvan algorithm and correlation analysis based on monthly
scale data of global weather stations released by the National Climatic
Data Center website since 1951. Some conclusions cloud be drawn: (1) The
precipitation showed a downward trend in other districts with
significant seasonal differences except the Europe. The annual
precipitation was “N” type distribution in Central Asia, while showed
an “inverted V” and a “positive V” distribution in the East Asia and
West Asia respectively, and the precipitation change was relatively
gentle in Europe. The dominant factors affecting climate were different
in different districts. (2) The temperature continued to increase in all
districts and the seasonal temperature presented unimodal distribution,
the alternation of drying and wetting was obvious in each districts as
well as the temperature was complex and changeable in Europe. (3) The
mutation point of temperature was detected by using Bernaola-Galvan
algorithm in all districts, but the timing of the mutation was not
synchronous and the mutation point of precipitation was not detected
except in Europe. (4) The precipitation was decreasing from west to east
in space, and the temperature showed the morphological distribution
characteristics of of low in the middle but high on both sides. (5) The
change of temperature were more sensitive than precipitation, the
precipitation in Central Asia was inversely correlated with other
districts, however, there was a high positive correlation between
temperature in all districts. The inversely correlation between
temperature and precipitation was the most significant in Central Asia.