MOR2 Mongolian Climatology and Climate Trends

by Venable, Fassnacht and Hendricks (2015)

If you use the data or images provided at this website, please cite the following:

Venable, N.B.H., S.R. Fassnacht, and A.D. Hendricks, 2015. Spatial Changes in Climate across Mongolia. In (Fernandez-Gimenez ME, Batkhishig B, Fassnacht SR, Wilson D, eds.) Proceedings of Building Resilience of Mongolian Rangelands: A Trans-disciplinary Research Conference, Ulaanbaatar Mongolia, June 9-10, 2015.



Mongolian climatology Mongolian climatology

ABSTRACT

Previous research using meteorological station data suggests that temperatures and precipitation have been changing more across the semi-arid and arid country of Mongolia than in many other locations across the globe. We used gridded monthly data to determine the annual and seasonal rate of change in total precipitation (P), maximum temperature (Tmax), and minimum temperature (Tmin), as computed from the non-parametric Thiel-Sen slope estimator method. The significance of those changes were computed from the Mann-Kendall test. The University of East Anglia Climatic Research Unit (CRU) dataset was used for the 50-year time period from 1963 through 2012 at a 0.5 degree (~55 km) resolution. For the first 30 years, 30 to 35 meteorological stations from across Mongolia were used to create the spatially distributed "High Resolution Gridded Data of Month-by-Month Variation in Climate" CRU product; 20 to 30 stations were used for the last 20 years due to a decrease in the number of operational stations. Results are presented as maps of 1) mean total annual P, and mean annual Tmax and Tmin, and ii) annual trends over the length of record with significance overlain for the three variables. Rates of change at annual and seasonal time scales varied spatially with more consistent increases in temperature; significant precipitation trends were observed over smaller areas than significant temperature trends.




The CRU data are from:
Harris, I., P.D. Jones, T.J. Osborn, and D.H. Lister, 2014. Updated high-resolution grids of monthly climatic observations - the CRU TS3.10 Dataset. International Journal of Climatology, 34: 623-642 [doi: 10.1002/joc.3711].





IMAGES

All figures are CMYK full resolution format, except where noted


Climatology and Trend Data


©2015 N.B.H. Venable, S.R. Fassnacht, A.D. Hendricks
Last update: SRF, 2015-05-15

Department of Ecosystem Science and Sustainability
Warner College of Natural Resources
Colorado State University