Zobrazeno 1 - 10
of 157
pro vyhledávání: '"C S B Grimmond"'
Publikováno v:
Environmental Research Letters, Vol 12, Iss 11, p 114007 (2017)
When the urban heat island (UHI) effect coincides with a heat wave (HW), thermal stress in cities is exacerbated. Understanding the surface energy balance (SEB) responses to HWs is critical for improving predictions of the synergies between UHIs and
Externí odkaz:
https://doaj.org/article/bbdbd6236c664717bd87182957a6fd30
Autor:
W. S. Drysdale, A. R. Vaughan, F. A. Squires, S. J. Cliff, S. Metzger, D. Durden, N. Pingintha-Durden, C. Helfter, E. Nemitz, C. S. B. Grimmond, J. Barlow, S. Beevers, G. Stewart, D. Dajnak, R. M. Purvis, J. D. Lee
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 9413-9433 (2022)
During March–June 2017 emissions of nitrogen oxides were measured via eddy covariance at the British Telecom Tower in central London, UK. Through the use of a footprint model the expected emissions were simulated from the spatially resolved Nationa
Externí odkaz:
https://doaj.org/article/9f41cfd020174c8c818f43067a12e8d8
Autor:
F. A. Squires, E. Nemitz, B. Langford, O. Wild, W. S. Drysdale, W. J. F. Acton, P. Fu, C. S. B. Grimmond, J. F. Hamilton, C. N. Hewitt, M. Hollaway, S. Kotthaus, J. Lee, S. Metzger, N. Pingintha-Durden, M. Shaw, A. R. Vaughan, X. Wang, R. Wu, Q. Zhang, Y. Zhang
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 8737-8761 (2020)
Direct measurements of NOx, CO and aromatic volatile organic compound (VOC) (benzene, toluene, C2-benzenes and C3-benzenes) flux were made for a central area of Beijing using the eddy-covariance technique. Measurements were made during two intensive
Externí odkaz:
https://doaj.org/article/12ae18f099da4c21970f44b0cc7f30ac
Autor:
G. Zazzeri, D. Lowry, R. E. Fisher, J. L. France, M. Lanoisellé, C. S. B. Grimmond, E. G. Nisbet
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
Abstract A thorough understanding of methane sources is necessary to accomplish methane reduction targets. Urban environments, where a large variety of methane sources coexist, are one of the most complex areas to investigate. Methane sources are cha
Externí odkaz:
https://doaj.org/article/60d120ee81bc47dc966f5324ac2223a7
Autor:
L. Järvi, C. S. B. Grimmond, J. P. McFadden, A. Christen, I. B. Strachan, M. Taka, L. Warsta, M. Heimann
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract While approximately 338 million people in the Northern hemisphere live in regions that are regularly snow covered in winter, there is little hydro-climatologic knowledge in the cities impacted by snow. Using observations and modelling we hav
Externí odkaz:
https://doaj.org/article/43737cdb115a49499edc3f4812187e06
Autor:
C. Helfter, A. H. Tremper, C. H. Halios, S. Kotthaus, A. Bjorkegren, C. S. B. Grimmond, J. F. Barlow, E. Nemitz
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 10543-10557 (2016)
We report on more than 3 years of measurements of fluxes of methane (CH4), carbon monoxide (CO) and carbon dioxide (CO2) taken by eddy-covariance in central London, UK. Mean annual emissions of CO2 in the period 2012–2014 (39.1 ± 2.4 ktons km
Externí odkaz:
https://doaj.org/article/3bc676e2b85f429a8114d5462a633560
Autor:
S. Kotthaus, E. O'Connor, C. Münkel, C. Charlton-Perez, M. Haeffelin, A. M. Gabey, C. S. B. Grimmond
Publikováno v:
Atmospheric Measurement Techniques, Vol 9, Iss 8, Pp 3769-3791 (2016)
Ceilometer lidars are used for cloud base height detection, to probe aerosol layers in the atmosphere (e.g. detection of elevated layers of Saharan dust or volcanic ash), and to examine boundary layer dynamics. Sensor optics and acquisition algorithm
Externí odkaz:
https://doaj.org/article/3cf003b4e19e4685814311572908758e
Publikováno v:
Atmospheric Measurement Techniques, Vol 8, Iss 3, Pp 1385-1405 (2015)
Scintillometry, a form of ground-based remote sensing, provides the capability to estimate surface heat fluxes over scales of a few hundred metres to kilometres. Measurements are spatial averages, making this technique particularly valuable over area
Externí odkaz:
https://doaj.org/article/6601d91b0f5e47ffb29ea48472a23cb0
Publikováno v:
Atmospheric Measurement Techniques, Vol 8, Iss 3, Pp 1407-1424 (2015)
A millimetre-wave scintillometer was paired with an infrared scintillometer, enabling estimation of large-area evapotranspiration across northern Swindon, a suburban area in the UK. Both sensible and latent heat fluxes can be obtained using this "two
Externí odkaz:
https://doaj.org/article/242485921d7949eba2786e7da8aefd9f
Publikováno v:
Atmosphere, Vol 11, Iss 1, p 53 (2020)
The integrated wind risk warning model for rail transport presented has four elements: Background wind data, a wind field model, a vulnerability model, and a risk model. Background wind data uses observations in this study. Using the wind field model
Externí odkaz:
https://doaj.org/article/7c2c12f3043c4b308528cffd04dd0916