Analysis of diurnal patterns in winter precipitation across the conterminous United States

Shouraseni S Roy, Robert C. Balling

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Hourly winter (November-March) precipitation data were assembled for nearly 5000 stations in the conterminous United States over the period 1948-98. Despite a potential observation bias in the 24th hour, a general tendency for winter precipitation events was found to occur more frequently near sunrise than for any other time of the day. Based on the standardized amplitude of the first harmonic wave, the pattern is most pronounced in Texas and in an area surrounding Colorado and Wyoming. The pattern also appears significant in the southeastern United States and in northern California based on the variance explained by the first harmonic fit. It is suggested that the diurnal patterns seen in the conterminous United States are related to increased relative humidity values occurring near sunrise and increased wind speeds in the warm sector of cyclonic storms.

Original languageEnglish (US)
Pages (from-to)707-711
Number of pages5
JournalMonthly Weather Review
Volume133
Issue number3
DOIs
StatePublished - Mar 2005
Externally publishedYes

Fingerprint

winter
relative humidity
wind velocity
analysis
station

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Analysis of diurnal patterns in winter precipitation across the conterminous United States. / Roy, Shouraseni S; Balling, Robert C.

In: Monthly Weather Review, Vol. 133, No. 3, 03.2005, p. 707-711.

Research output: Contribution to journalArticle

@article{061bfb05327d45119e94b46934e6a217,
title = "Analysis of diurnal patterns in winter precipitation across the conterminous United States",
abstract = "Hourly winter (November-March) precipitation data were assembled for nearly 5000 stations in the conterminous United States over the period 1948-98. Despite a potential observation bias in the 24th hour, a general tendency for winter precipitation events was found to occur more frequently near sunrise than for any other time of the day. Based on the standardized amplitude of the first harmonic wave, the pattern is most pronounced in Texas and in an area surrounding Colorado and Wyoming. The pattern also appears significant in the southeastern United States and in northern California based on the variance explained by the first harmonic fit. It is suggested that the diurnal patterns seen in the conterminous United States are related to increased relative humidity values occurring near sunrise and increased wind speeds in the warm sector of cyclonic storms.",
author = "Roy, {Shouraseni S} and Balling, {Robert C.}",
year = "2005",
month = "3",
doi = "10.1175/MWR-2873.1",
language = "English (US)",
volume = "133",
pages = "707--711",
journal = "Monthly Weather Review",
issn = "0027-0644",
publisher = "American Meteorological Society",
number = "3",

}

TY - JOUR

T1 - Analysis of diurnal patterns in winter precipitation across the conterminous United States

AU - Roy, Shouraseni S

AU - Balling, Robert C.

PY - 2005/3

Y1 - 2005/3

N2 - Hourly winter (November-March) precipitation data were assembled for nearly 5000 stations in the conterminous United States over the period 1948-98. Despite a potential observation bias in the 24th hour, a general tendency for winter precipitation events was found to occur more frequently near sunrise than for any other time of the day. Based on the standardized amplitude of the first harmonic wave, the pattern is most pronounced in Texas and in an area surrounding Colorado and Wyoming. The pattern also appears significant in the southeastern United States and in northern California based on the variance explained by the first harmonic fit. It is suggested that the diurnal patterns seen in the conterminous United States are related to increased relative humidity values occurring near sunrise and increased wind speeds in the warm sector of cyclonic storms.

AB - Hourly winter (November-March) precipitation data were assembled for nearly 5000 stations in the conterminous United States over the period 1948-98. Despite a potential observation bias in the 24th hour, a general tendency for winter precipitation events was found to occur more frequently near sunrise than for any other time of the day. Based on the standardized amplitude of the first harmonic wave, the pattern is most pronounced in Texas and in an area surrounding Colorado and Wyoming. The pattern also appears significant in the southeastern United States and in northern California based on the variance explained by the first harmonic fit. It is suggested that the diurnal patterns seen in the conterminous United States are related to increased relative humidity values occurring near sunrise and increased wind speeds in the warm sector of cyclonic storms.

UR - http://www.scopus.com/inward/record.url?scp=17044377055&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17044377055&partnerID=8YFLogxK

U2 - 10.1175/MWR-2873.1

DO - 10.1175/MWR-2873.1

M3 - Article

AN - SCOPUS:17044377055

VL - 133

SP - 707

EP - 711

JO - Monthly Weather Review

JF - Monthly Weather Review

SN - 0027-0644

IS - 3

ER -