An update of observed stratospheric temperature trends by Randel, W, Shine, K, Austin, J, Barnett, J, Claud, C, Gillett, N, Keckhut, P, Langematz, U, Lin, R, Long, C, Mears, C, Miller, A, Nash, J, Seidel, D, Thompson, D, Wu, F, Yoden, S