Multiyear trends of Normalized Difference Vegetation Index and temperature in the south of Krasnoyarsk Krai

被引：3

作者：

Shevyrnogov, A. P. ^{[1
,3
]}

Chernetskiy, M. Yu. ^{[1
]}

Vysotskaya, G. S. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia

[2] Russian Acad Sci, Siberian Branch, Inst Computat Modeling, Krasnoyarsk, Russia

[3] Siberian Fed Univ, Krasnoyarsk, Russia

来源：

IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS | 2013年 / 49卷 / 09期

关键词：

NDVI; MODIS; AVHRR; GIMMS; air temperature; radiation temperature of surface; trends; northern Eurasia; Yermakovsk raion; NDVI; SEASONALITY; REDUCTION; DROUGHT; GIMMS; MODIS;

D O I：

10.1134/S0001433813090132

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

It is found that the nonlinear positive Normalized Difference Vegetation Index (NDVI) trend of mountain taiga in the south of Krasnoyarsk Krai has been negative since 1999-2000. A comparison with the boreal belt of northern Eurasia showed that, though still nonnegative, the positive trend has distinctly decreased to nearly a plateau. A trend analysis of radiation temperature of the surface revealed that the temperature shows a decreasing trend for the selected region of mountainous taiga and an increasing trend for northern Eurasia. We compared air-temperature data from the Yermakovskoe meteorological station to eliminate a preliminary data-processing error. Regression analysis demonstrated a fairly high degree of correlation. Also, we found a quite high degree of correlation between time series and trends of air temperature and NDVI. Trends in air temperature in northern Eurasia according to NCEP-DOE Reanalysis 2 data also confirm the trend found on the basis of satellite data.

引用

页码：1047 / 1056

页数：10