Remote Sens. 2012, 4(11), 3501-3527; doi:10.3390/rs4113501
Article

Analysis of MODIS LST Compared with WRF Model and in situ Data over the Waimakariri River Basin, Canterbury, New Zealand

1 Atmospheric Research Centre, Department of Geography, University of Canterbury, Christchurch, New Zealand 2 Gateway Antarctica, Centre for Antarctic Studies & Research, University of Canterbury, Christchurch, New Zealand
* Author to whom correspondence should be addressed.
Received: 12 September 2012; in revised form: 9 November 2012 / Accepted: 12 November 2012 / Published: 19 November 2012
PDF Full-text Download PDF Full-Text [1078 KB, uploaded 19 November 2012 11:13 CET]
Abstract: In this study we examine the relationship between remotely sensed, in situ and modelled land surface temperature (LST) over a heterogeneous land-cover (LC) enclosed in alpine terrain. This relationship can help to understand to what extent the remotely sensed data can be used to improve model simulations of land surface parameters such as LST in mountainous areas. LST from the MODerate resolution Imaging Spectro-radiometer (MODIS), the modelled surface skin temperature by the Weather Research and Forecasting (WRF) mesoscale numerical model and the in situ measurements of surface temperature are used in the analysis. The test-site is located in a mountain valley in the Southern Alps of New Zealand. Geospatial analysis in GIS is used to relate pixels, grid-cells and points from the MODIS LST, model simulations and the in situ data, respectively. Differences between LST from MODIS, the WRF model and the in situ data are presented with respect to surface LC at different times of day. Initial results from regression analysis of the three datasets showed a goodness of fit R2 coefficient of 0:77 for the model simulations and 0:35 for the MODIS LST. These values improved significantly when time-lags were considered and the few outliers were removed, giving R2 values of 0:80 for the model and 0:73 for the MODIS LST. These results show that the WRF model correlates better with the in situ measurements over various LC types in this region compared with the MODIS LST. Longer time-series, however, are required to draw more robust conclusions about the applicability of the MODIS LST product for improving WRF simulations over alpine complex terrain.
Keywords: MODIS; land surface temperature; LST; WRF; mesoscale model; in situ data; iButtons; Waimakariri

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Sohrabinia, M.; Rack, W.; Zawar-Reza, P. Analysis of MODIS LST Compared with WRF Model and in situ Data over the Waimakariri River Basin, Canterbury, New Zealand. Remote Sens. 2012, 4, 3501-3527.

AMA Style

Sohrabinia M, Rack W, Zawar-Reza P. Analysis of MODIS LST Compared with WRF Model and in situ Data over the Waimakariri River Basin, Canterbury, New Zealand. Remote Sensing. 2012; 4(11):3501-3527.

Chicago/Turabian Style

Sohrabinia, Mohammad; Rack, Wolfgang; Zawar-Reza, Peyman. 2012. "Analysis of MODIS LST Compared with WRF Model and in situ Data over the Waimakariri River Basin, Canterbury, New Zealand." Remote Sens. 4, no. 11: 3501-3527.

Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert