TY - JOUR
T1 - Validation of GNSS-observed climate variables over Tibetan Plateau
AU - Shum, C. K.
AU - Tseng, Kuo Hsin
AU - Kuo, Chungyen
AU - Cheng, Kai Chien
AU - Dai, Chunli
AU - Duan, Jianbin
AU - Huang, Zhenwei
AU - Lee, Hyongki
AU - Song, Sulei
AU - Yang, Ming
AU - Zhu, Wenyao
PY - 2011/3
Y1 - 2011/3
N2 - Atmospheric variables over high elevation areas such as the surface temperature of the Qinghai-Tibetan Plateau, with an averaged altitude of 4-5 km, is rising at a rate of ~0.3°C/decade, more than twice the rate of global temperature rise. Here we use independently obtained surface temperature and water vapor pressure (WVP) data from a variety of satellite platforms, models and in situ data around Lhasa, Qinghai-Tibetan Plateau, to study the consistency of the evolution of these two atmospheric variables. We used data products from the FORMOSAT-3/COSMIC radio occultation data, NWP reanalysis model (ERA-Interim and JRA-25), MODIS and AIRS passive microwave data products, and in situ data at the Lhasa GPS station. Despite the altitude of the study region at ~4,000 km, there are significant differences between the satellite observables and NWPs, including large relative biases. We concluded that the various observables have significant relative biases between each other and further study is needed to unravel the source of these biases.
AB - Atmospheric variables over high elevation areas such as the surface temperature of the Qinghai-Tibetan Plateau, with an averaged altitude of 4-5 km, is rising at a rate of ~0.3°C/decade, more than twice the rate of global temperature rise. Here we use independently obtained surface temperature and water vapor pressure (WVP) data from a variety of satellite platforms, models and in situ data around Lhasa, Qinghai-Tibetan Plateau, to study the consistency of the evolution of these two atmospheric variables. We used data products from the FORMOSAT-3/COSMIC radio occultation data, NWP reanalysis model (ERA-Interim and JRA-25), MODIS and AIRS passive microwave data products, and in situ data at the Lhasa GPS station. Despite the altitude of the study region at ~4,000 km, there are significant differences between the satellite observables and NWPs, including large relative biases. We concluded that the various observables have significant relative biases between each other and further study is needed to unravel the source of these biases.
KW - FORMOSAT-3/COSMIC satellite
KW - GNSS radio occultation
KW - Temperature
KW - Terra/Aqua
KW - Water vapor pressure
UR - http://www.scopus.com/inward/record.url?scp=79957977928&partnerID=8YFLogxK
M3 - 期刊論文
AN - SCOPUS:79957977928
SN - 1990-7710
VL - 43
SP - 9
EP - 16
JO - Journal of Aeronautics, Astronautics and Aviation
JF - Journal of Aeronautics, Astronautics and Aviation
IS - 1
ER -