The dynamic effects of sediment availability on the relationship between wind speed and dust concentration

Tom Mockford; Joanna E. Bullard; Throstur Thorsteinsson

doi:10.1002/esp.4407

The dynamic effects of sediment availability on the relationship between wind speed and dust concentration

Tom Mockford
, Joanna E. Bullard
, Throstur Thorsteinsson

Faculty of Life and Environmental Sciences

University of Iceland

Research output: Contribution to journal › Letter › peer-review

Abstract

Where sediment supply is unlimited, previous research suggests that a strong, positive relationship between wind speed and dust concentration exists at the event scale. This relationship can break down if sediment availability is limited or changes during an event. This paper explores the dynamic effects of sediment availability on the relationship between wind speed and dust concentration using data from nine high-latitude dust events recorded in Iceland. Of these events, six showed a strong positive relationship between wind speed and dust concentration. For the remainder, the relationship breaks down periodically during the event due to changing surface moisture conditions and atmospheric humidity. Results suggest a need to understand how spatial and temporal changes in humidity, surface soil moisture, soil texture and threshold velocity interact and control sediment availability for dust emissions in all environments, including at high latitudes.

Original language	English
Pages (from-to)	2484-2492
Number of pages	9
Journal	Earth Surface Processes and Landforms
Volume	43
Issue number	11
DOIs	https://doi.org/10.1002/esp.4407
Publication status	Published - 15 Sept 2018

Bibliographical note

Funding Information: Acknowledgements—This research was funded by the British Society for Geomorphology, Royal Geographical Society with the Institute of British Geographers, Dudley Stamp Memorial Award, Loughborough University and The Leverhulme Trust International Network grant (IN-2013-036). We thank the Icelandic Meteorological Office for access to data. Data will be available from the Loughborough University Data Repository after 31 December 2018. http://www.lboro.ac.uk/services/ library/research/doingres/rdm/archiving/ Funding Information: This research was funded by the British Society for Geomorphology, Royal Geographical Society with the Institute of British Geographers, Dudley Stamp Memorial Award, Loughborough University and The Leverhulme Trust International Network grant (IN-2013-036). We thank the Icelandic Meteorological Office for access to data. Data will be available from the Loughborough University Data Repository after 31 December 2018. http://www.lboro.ac.uk/services/library/research/doingres/rdm/archiving/ Publisher Copyright: Copyright © 2018 John Wiley & Sons, Ltd.

Other keywords

Iceland
dust concentration
dust model
dust storm
soil moisture

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10.1002/esp.4407

Cite this

@article{d232020b582147e9904cb62a4e1d10ee,

title = "The dynamic effects of sediment availability on the relationship between wind speed and dust concentration",

abstract = "Where sediment supply is unlimited, previous research suggests that a strong, positive relationship between wind speed and dust concentration exists at the event scale. This relationship can break down if sediment availability is limited or changes during an event. This paper explores the dynamic effects of sediment availability on the relationship between wind speed and dust concentration using data from nine high-latitude dust events recorded in Iceland. Of these events, six showed a strong positive relationship between wind speed and dust concentration. For the remainder, the relationship breaks down periodically during the event due to changing surface moisture conditions and atmospheric humidity. Results suggest a need to understand how spatial and temporal changes in humidity, surface soil moisture, soil texture and threshold velocity interact and control sediment availability for dust emissions in all environments, including at high latitudes.",

keywords = "Iceland, dust concentration, dust model, dust storm, soil moisture",

author = "Tom Mockford and Bullard, \{Joanna E.\} and Throstur Thorsteinsson",

note = "Funding Information: Acknowledgements—This research was funded by the British Society for Geomorphology, Royal Geographical Society with the Institute of British Geographers, Dudley Stamp Memorial Award, Loughborough University and The Leverhulme Trust International Network grant (IN-2013-036). We thank the Icelandic Meteorological Office for access to data. Data will be available from the Loughborough University Data Repository after 31 December 2018. http://www.lboro.ac.uk/services/ library/research/doingres/rdm/archiving/ Funding Information: This research was funded by the British Society for Geomorphology, Royal Geographical Society with the Institute of British Geographers, Dudley Stamp Memorial Award, Loughborough University and The Leverhulme Trust International Network grant (IN-2013-036). We thank the Icelandic Meteorological Office for access to data. Data will be available from the Loughborough University Data Repository after 31 December 2018. http://www.lboro.ac.uk/services/library/research/doingres/rdm/archiving/ Publisher Copyright: Copyright {\textcopyright} 2018 John Wiley \& Sons, Ltd.",

year = "2018",

month = sep,

day = "15",

doi = "10.1002/esp.4407",

language = "English",

volume = "43",

pages = "2484--2492",

journal = "Earth Surface Processes and Landforms",

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publisher = "John Wiley and Sons Ltd",

number = "11",

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TY - JOUR

T1 - The dynamic effects of sediment availability on the relationship between wind speed and dust concentration

AU - Mockford, Tom

AU - Bullard, Joanna E.

AU - Thorsteinsson, Throstur

N1 - Funding Information: Acknowledgements—This research was funded by the British Society for Geomorphology, Royal Geographical Society with the Institute of British Geographers, Dudley Stamp Memorial Award, Loughborough University and The Leverhulme Trust International Network grant (IN-2013-036). We thank the Icelandic Meteorological Office for access to data. Data will be available from the Loughborough University Data Repository after 31 December 2018. http://www.lboro.ac.uk/services/ library/research/doingres/rdm/archiving/ Funding Information: This research was funded by the British Society for Geomorphology, Royal Geographical Society with the Institute of British Geographers, Dudley Stamp Memorial Award, Loughborough University and The Leverhulme Trust International Network grant (IN-2013-036). We thank the Icelandic Meteorological Office for access to data. Data will be available from the Loughborough University Data Repository after 31 December 2018. http://www.lboro.ac.uk/services/library/research/doingres/rdm/archiving/ Publisher Copyright: Copyright © 2018 John Wiley & Sons, Ltd.

PY - 2018/9/15

Y1 - 2018/9/15

N2 - Where sediment supply is unlimited, previous research suggests that a strong, positive relationship between wind speed and dust concentration exists at the event scale. This relationship can break down if sediment availability is limited or changes during an event. This paper explores the dynamic effects of sediment availability on the relationship between wind speed and dust concentration using data from nine high-latitude dust events recorded in Iceland. Of these events, six showed a strong positive relationship between wind speed and dust concentration. For the remainder, the relationship breaks down periodically during the event due to changing surface moisture conditions and atmospheric humidity. Results suggest a need to understand how spatial and temporal changes in humidity, surface soil moisture, soil texture and threshold velocity interact and control sediment availability for dust emissions in all environments, including at high latitudes.

AB - Where sediment supply is unlimited, previous research suggests that a strong, positive relationship between wind speed and dust concentration exists at the event scale. This relationship can break down if sediment availability is limited or changes during an event. This paper explores the dynamic effects of sediment availability on the relationship between wind speed and dust concentration using data from nine high-latitude dust events recorded in Iceland. Of these events, six showed a strong positive relationship between wind speed and dust concentration. For the remainder, the relationship breaks down periodically during the event due to changing surface moisture conditions and atmospheric humidity. Results suggest a need to understand how spatial and temporal changes in humidity, surface soil moisture, soil texture and threshold velocity interact and control sediment availability for dust emissions in all environments, including at high latitudes.

KW - Iceland

KW - dust concentration

KW - dust model

KW - dust storm

KW - soil moisture

UR - https://www.scopus.com/pages/publications/85047478019

U2 - 10.1002/esp.4407

DO - 10.1002/esp.4407

M3 - Letter

SN - 0197-9337

VL - 43

SP - 2484

EP - 2492

JO - Earth Surface Processes and Landforms

JF - Earth Surface Processes and Landforms

IS - 11

ER -

The dynamic effects of sediment availability on the relationship between wind speed and dust concentration

Abstract

Bibliographical note

Other keywords

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