2017
DOI: 10.1002/asl.765
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New Saharan wind observations reveal substantial biases in analysed dust‐generating winds

Abstract: For the remote Sahara, the Earth's largest dust source, there has always been a near-absence of data for evaluating models.

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Cited by 24 publications
(45 citation statements)
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“…This may be particularly true for northern Africa but many aspects apply to other source regions around the world, too. For example, many models create too much vertical mixing in the stable nighttime planetary boundary layer (PBL) over arid areas, leading to an underestimation of nocturnal low-level jets and a too flat diurnal cycle in surface winds Largeron et al, 2015;Roberts et al, 2017). This is partly related to an underestimation of turbulent dust emissions during the day (Klose and Shao, 2012).…”
Section: User Requirements For Desert Mineral Dust Emissionsmentioning
confidence: 99%
See 1 more Smart Citation
“…This may be particularly true for northern Africa but many aspects apply to other source regions around the world, too. For example, many models create too much vertical mixing in the stable nighttime planetary boundary layer (PBL) over arid areas, leading to an underestimation of nocturnal low-level jets and a too flat diurnal cycle in surface winds Largeron et al, 2015;Roberts et al, 2017). This is partly related to an underestimation of turbulent dust emissions during the day (Klose and Shao, 2012).…”
Section: User Requirements For Desert Mineral Dust Emissionsmentioning
confidence: 99%
“…Another substantial problem is the lack of dust generation related to cold pools (haboobs) associated with moist convection over the Sahel and Sahara (and many other desert areas in Asia, Australia, and America), a process largely absent in models with parameterized convection Heinold et al, 2013;Pantillon et al, 2015Pantillon et al, , 2016. This leads to even reanalyses missing the summertime maximum in dust-generating winds in the central Sahara (Cuevas et al, 2015;Roberts et al, 2017).…”
Section: User Requirements For Desert Mineral Dust Emissionsmentioning
confidence: 99%
“…This is particularly true for northern Africa but many aspects apply to other source regions around the world, too. For example, many models create too much vertical mixing in the stable nighttime planetary boundary layer over arid areas, leading to an underestimation of nocturnal low-level jets and a too flat diurnal cycle in surface winds Largeron et al (2015); Roberts et al (2017)). This is also partly related to an underestimation of turbulent 580 dust emission during the day (Klose and Shao, 2012).…”
Section: Observations and Data Production For Verification And Assimimentioning
confidence: 99%
“…Another substantial problem is the lack of dust generation related to cold pools (haboobs) associated with moist convection over the Sahel and Sahara (and many other desert areas), a process largely absent in models with parameterized convection (Marsham et al (2011);Heinold et al (2013); Pantillon et al (2015Pantillon et al ( , 2016). This leads to even reanalyses missing the summertime maximum in dust generating winds in the central Sahara 585 (Roberts et al, 2017). A too simplistic treatment of surface roughness in many models can also lead to significant differences in near-surface wind speed locally, particular in the semi-arid Sahel with its seasonal vegetation (Cowie et al, 2013;Kergoat et al, 2017).…”
Section: Observations and Data Production For Verification And Assimimentioning
confidence: 99%
See 1 more Smart Citation