Examination of climatological wind patterns and simulated pollen dispersion in a complex island environment

Brian James Viner, Raymond W. Arritt, Mark E. Westgate

Research output: Contribution to journalArticle

Abstract

Complex terrain creates small-scale circulations which affect pollen dispersion but may be missed by meteorological observing networks and coarse-grid meteorological models. On volcanic islands, these circulations result from differing rates of surface heating between land and sea as well as rugged terrain. We simulated the transport of bentgrass, ryegrass, and maize pollen from 30 sources within the agricultural regions of the Hawaiian island Kaua’i during climatological conditions spanning season conditions and the La Niña, El Niño, and neutral phases of the El Niño-Southern Oscillation. Both pollen size and source location had major effects on predicted dispersion over and near the island. Three patterns of pollen dispersion were identified in response to prevailing wind conditions: southwest winds transported pollen inland, funneling pollen grains through valleys; east winds transported pollen over the ocean, with dispersive tails for the smallest pollen grains following the mean wind and extending as far as the island of Ni’ihau 35 km away; and northeast winds moved pollen inland counter to the prevailing flow due to a sea breeze circulation that formed over the source region. These results are the first to predict the interactions between complex island terrain and local climatology on grass pollen dispersion. They demonstrate how numerical modeling can provide guidance for field trials by illustrating the common flow regimes present in complex terrain, allowing field trials to focus on areas where successful sampling is more likely to occur.

Original languageEnglish (US)
Pages (from-to)1481-1492
Number of pages12
JournalInternational Journal of Biometeorology
Volume61
Issue number8
DOIs
StatePublished - Aug 1 2017

Fingerprint

Pollen
Islands
pollen
Oceans and Seas
complex terrain
Agrostis
Meteorology
Lolium
volcanic island
sea breeze
Southern Oscillation
Poaceae
Heating
climatology
Zea mays
maize
grass
heating
valley
sampling

Keywords

  • Agrostis sp
  • Atmospheric dispersion
  • Atmospheric modeling
  • Lolium sp
  • Sea breeze
  • Zea mays

ASJC Scopus subject areas

  • Ecology
  • Atmospheric Science
  • Health, Toxicology and Mutagenesis

Cite this

Examination of climatological wind patterns and simulated pollen dispersion in a complex island environment. / Viner, Brian James; Arritt, Raymond W.; Westgate, Mark E.

In: International Journal of Biometeorology, Vol. 61, No. 8, 01.08.2017, p. 1481-1492.

Research output: Contribution to journalArticle

@article{4091686ece0240c38cceec05cc94e8f2,
title = "Examination of climatological wind patterns and simulated pollen dispersion in a complex island environment",
abstract = "Complex terrain creates small-scale circulations which affect pollen dispersion but may be missed by meteorological observing networks and coarse-grid meteorological models. On volcanic islands, these circulations result from differing rates of surface heating between land and sea as well as rugged terrain. We simulated the transport of bentgrass, ryegrass, and maize pollen from 30 sources within the agricultural regions of the Hawaiian island Kaua’i during climatological conditions spanning season conditions and the La Ni{\~n}a, El Ni{\~n}o, and neutral phases of the El Ni{\~n}o-Southern Oscillation. Both pollen size and source location had major effects on predicted dispersion over and near the island. Three patterns of pollen dispersion were identified in response to prevailing wind conditions: southwest winds transported pollen inland, funneling pollen grains through valleys; east winds transported pollen over the ocean, with dispersive tails for the smallest pollen grains following the mean wind and extending as far as the island of Ni’ihau 35 km away; and northeast winds moved pollen inland counter to the prevailing flow due to a sea breeze circulation that formed over the source region. These results are the first to predict the interactions between complex island terrain and local climatology on grass pollen dispersion. They demonstrate how numerical modeling can provide guidance for field trials by illustrating the common flow regimes present in complex terrain, allowing field trials to focus on areas where successful sampling is more likely to occur.",
keywords = "Agrostis sp, Atmospheric dispersion, Atmospheric modeling, Lolium sp, Sea breeze, Zea mays",
author = "Viner, {Brian James} and Arritt, {Raymond W.} and Westgate, {Mark E.}",
year = "2017",
month = "8",
day = "1",
doi = "10.1007/s00484-017-1325-1",
language = "English (US)",
volume = "61",
pages = "1481--1492",
journal = "International Journal of Biometeorology",
issn = "0020-7128",
publisher = "Springer New York",
number = "8",

}

TY - JOUR

T1 - Examination of climatological wind patterns and simulated pollen dispersion in a complex island environment

AU - Viner, Brian James

AU - Arritt, Raymond W.

AU - Westgate, Mark E.

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Complex terrain creates small-scale circulations which affect pollen dispersion but may be missed by meteorological observing networks and coarse-grid meteorological models. On volcanic islands, these circulations result from differing rates of surface heating between land and sea as well as rugged terrain. We simulated the transport of bentgrass, ryegrass, and maize pollen from 30 sources within the agricultural regions of the Hawaiian island Kaua’i during climatological conditions spanning season conditions and the La Niña, El Niño, and neutral phases of the El Niño-Southern Oscillation. Both pollen size and source location had major effects on predicted dispersion over and near the island. Three patterns of pollen dispersion were identified in response to prevailing wind conditions: southwest winds transported pollen inland, funneling pollen grains through valleys; east winds transported pollen over the ocean, with dispersive tails for the smallest pollen grains following the mean wind and extending as far as the island of Ni’ihau 35 km away; and northeast winds moved pollen inland counter to the prevailing flow due to a sea breeze circulation that formed over the source region. These results are the first to predict the interactions between complex island terrain and local climatology on grass pollen dispersion. They demonstrate how numerical modeling can provide guidance for field trials by illustrating the common flow regimes present in complex terrain, allowing field trials to focus on areas where successful sampling is more likely to occur.

AB - Complex terrain creates small-scale circulations which affect pollen dispersion but may be missed by meteorological observing networks and coarse-grid meteorological models. On volcanic islands, these circulations result from differing rates of surface heating between land and sea as well as rugged terrain. We simulated the transport of bentgrass, ryegrass, and maize pollen from 30 sources within the agricultural regions of the Hawaiian island Kaua’i during climatological conditions spanning season conditions and the La Niña, El Niño, and neutral phases of the El Niño-Southern Oscillation. Both pollen size and source location had major effects on predicted dispersion over and near the island. Three patterns of pollen dispersion were identified in response to prevailing wind conditions: southwest winds transported pollen inland, funneling pollen grains through valleys; east winds transported pollen over the ocean, with dispersive tails for the smallest pollen grains following the mean wind and extending as far as the island of Ni’ihau 35 km away; and northeast winds moved pollen inland counter to the prevailing flow due to a sea breeze circulation that formed over the source region. These results are the first to predict the interactions between complex island terrain and local climatology on grass pollen dispersion. They demonstrate how numerical modeling can provide guidance for field trials by illustrating the common flow regimes present in complex terrain, allowing field trials to focus on areas where successful sampling is more likely to occur.

KW - Agrostis sp

KW - Atmospheric dispersion

KW - Atmospheric modeling

KW - Lolium sp

KW - Sea breeze

KW - Zea mays

UR - http://www.scopus.com/inward/record.url?scp=85016396444&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85016396444&partnerID=8YFLogxK

U2 - 10.1007/s00484-017-1325-1

DO - 10.1007/s00484-017-1325-1

M3 - Article

VL - 61

SP - 1481

EP - 1492

JO - International Journal of Biometeorology

JF - International Journal of Biometeorology

SN - 0020-7128

IS - 8

ER -