Diurnal cycle of summertime deep convection over North America: A satellite perspective

Tian, Baijun

doi:10.1029/2004jd005275

Cited by 55 publications

(54 citation statements)

References 33 publications

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“…Note that the night-time precipitation maximum zone (35-50°N) is shifted northwards from the strongest GPLLJ wind zone (30-40°N). This location of night-time precipitation maximum zone is in accordance with the satellite-based data of Tian et al (2005). In this zone the precipitation maximum can be related with the night-time enhancement of the GPLLJ, occurring a couple of hours earlier (local midnight, according to Fig.…”

Section: Great Plains Low-level Jetsupporting

confidence: 51%

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Reanalysis-driven climate simulation over CORDEX North America domain using the Canadian Regional Climate Model, version 5: model performance evaluation

et al. 2013

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The performance of reanalysis-driven Canadian Regional Climate Model, version 5 (CRCM5) in reproducing the present climate over the North American COordinated Regional climate Downscaling EXperiment domain for the 1989-2008 period has been assessed in comparison with several observation-based datasets. The model reproduces satisfactorily the near-surface temperature and precipitation characteristics over most part of North America. Coastal and mountainous zones remain problematic: a cold bias (2-6°C) prevails over Rocky Mountains in summertime and all year-round over Mexico; winter precipitation in mountainous coastal regions is overestimated. The precipitation patterns related to the North American Monsoon are well reproduced, except on its northern limit. The spatial and temporal structure of the Great Plains Low-Level Jet is well reproduced by the model; however, the night-time precipitation maximum in the jet area is underestimated. The performance of CRCM5 was assessed against earlier CRCM versions and other RCMs. CRCM5 is shown to have been substantially improved compared to CRCM3 and CRCM4 in terms of seasonal mean statistics, and to be comparable to other modern RCMs.

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Section: Great Plains Low-level Jetsupporting

confidence: 51%

“…18f) is predominantly flat according to both TRMM and to CRCM5. The CRCM5 data contain a broad maximum in the morning hours, characteristic the diurnal cycle of precipitation over the oceans (Tian et al 2005).…”

Section: Summer Diurnal Cycle In Subregionsmentioning

confidence: 99%

Reanalysis-driven climate simulation over CORDEX North America domain using the Canadian Regional Climate Model, version 5: model performance evaluation

et al. 2013

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“…Many studies have examined the diurnal variability of precipitation over the continental United States (e.g., Wallace, 1975;Riley et al, 1987;Carbone et al, 2002;Liang et al, 2004;Tian et al, 2005). These studies have shown a distinctive geographical pattern of precipitation diurnal variations during summer which is characterized by a strong midnight to early morning maximum over the regions east of the Rockies and the Great Plains (GP), and a strong late afternoon maximum over the western and southeastern United States.…”

Section: Introductionmentioning

confidence: 99%

Summer rain fall duration and its diurnal cycle over the US Great Plains

Chen¹,

Zhou²,

Yu³

et al. 2008

Intl Journal of Climatology

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By diagnosing the hourly station rain gauge data set for the 1981-1999 periods, it is found that the rainfall diurnal cycle is closely related to its duration during summer (June-August) over the Great Plains [(GP), 100-90°W, 35-45°N]. Short-duration rainfall events (an event of 1 h in duration) occur more frequently in summer, and they tend to have two diurnal maxima over the GP, with one in the early morning [0400-0600 local solar time, (LST)] and the other in the afternoon (1500-1700 LST). Long-duration rainfall events (an event that lasts longer than 3 h) contribute more to the precipitation amount, and they tend to peak from the midnight to early morning (000-0600 LST). This contrast in the diurnal cycle of different classifications of precipitation events over the GP reflects the differences in the convective processes at night and during late afternoon.

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“…Observations of the diurnal variation can be found in many atmospheric variables. Near the ground, weather reports show that surface air temperature, pressure, winds, precipitation (Dai and Deser, 1999; and precipitable water vapor (Dai et al, 2002) vary greatly in 24 h. In the troposphere, satellite radiance measurements reveal a significant diurnal cycle of hydrological processes in terms of precipitation (Nesbitt and Zipser, 2003), deep convection, cloudiness and upper tropospheric humidity (UTH) (e.g., Tian et al, 2004Tian et al, , 2005Chung et al, 2007). From the upper troposphere to the mesosphere and thermosphere, the propagating tidal waves from the water vapor and ozone heating have been extensively investigated and described in the monograph by Chapman and Lindzen (1970).…”

Section: Introductionmentioning

confidence: 99%

Atmospheric diurnal variations observed with GPS radio occultation soundings

Xie

et al. 2010

Atmos. Chem. Phys.

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Abstract. The diurnal variation, driven by solar forcing, is a fundamental mode in the Earth's weather and climate system. Radio occultation (RO) measurements from the six COSMIC satellites (Constellation Observing System for Meteorology, Ionosphere and Climate) provide nearly uniform global coverage with high vertical resolution, all-weather and diurnal sampling capability. This paper analyzes the diurnal variations of temperature and refractivity from three-year (2007)(2008)(2009)) COSMIC RO measurements in the troposphere and stratosphere between 30 • S and 30 • N. The RO observations reveal both propagating and trapped vertical structures of diurnal variations, including transition regions near the tropopause where data with high vertical resolution are critical. In the tropics the diurnal amplitude in refractivity shows the minimum around 14 km and increases to a local maximum around 32 km in the stratosphere. The upward propagating component of the migrating diurnal tides in the tropics is clearly captured by the GPS RO measurements, which show a downward progression in phase from stratopause to the upper troposphere with a vertical wavelength of about 25 km. At ∼32 km the seasonal variation of the tidal amplitude maximizes at the opposite side of the equator relative to the solar forcing. The vertical structure of tidal amplitude shows strong seasonal variations and becomes asymmetric along the equator and tilted toward the summer hemisphere in the solstice months. Such asymmetry becomes less prominent in equinox months.

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Diurnal cycle of summertime deep convection over North America: A satellite perspective

Cited by 55 publications

References 33 publications

Reanalysis-driven climate simulation over CORDEX North America domain using the Canadian Regional Climate Model, version 5: model performance evaluation

Reanalysis-driven climate simulation over CORDEX North America domain using the Canadian Regional Climate Model, version 5: model performance evaluation

Summer rain fall duration and its diurnal cycle over the US Great Plains

Atmospheric diurnal variations observed with GPS radio occultation soundings

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