The Effects of Deep Convection on Regional Temperature Structure in the Tropical Upper Troposphere and Lower Stratosphere

The Effects of Deep Convection on Regional Temperature Structure in the Tropical Upper... Understanding the impact of deep convection on the thermodynamic structure of the tropical upper troposphere and lower stratosphere (UTLS) is vital because convection and temperatures play an important role in regulating stratospheric water vapor through direct convective injection and in enhancing the presence of thin cirrus clouds, both of which play a significant role in the climate. This study quantifies the UTLS vertical temperature structure changes near deep convection over the Pacific Warm Pool and the Tropical Atlantic Continental and Oceanic region. The deep convection observed from the Tropical Rainfall Measuring Mission satellite are collocated with high vertical resolution temperature profiles from the COSMIC GPS Radio Occultation satellites along with ERA‐Interim reanalysis from 2007 to 2011. COSMIC and ERA‐Interim observe warm temperature anomalies (0.2 to 0.8 K) within 10–14 km, then transitioning to a layer of cool anomalies (−0.4 to −1.5 K) within 14–17 km. Above the cold‐point tropopause, warm anomalies (<1 K) are observed for oceanic convection, whereas cool anomalies are displayed for land convection within 17–20 km. The amplitude of temperature anomalies increases for deeper convection, marked by higher 20 dBZ radar echo top heights or colder infrared cloud top temperatures. COSMIC also observes enhanced UTLS diurnal temperature variations of about 0.2–0.3 K in both regions near deep convection. ERA‐Interim shows generally good agreement with COSMIC on the UTLS temperature anomalies near deep convection but displays larger differences above the tropopause, especially near land convection. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Geophysical Research: Atmospheres Wiley

The Effects of Deep Convection on Regional Temperature Structure in the Tropical Upper Troposphere and Lower Stratosphere

Loading next page...
 
/lp/wiley/the-effects-of-deep-convection-on-regional-temperature-structure-in-iawQfineYv
Publisher
Wiley
Copyright
©2018. American Geophysical Union. All Rights Reserved.
ISSN
2169-897X
eISSN
2169-8996
D.O.I.
10.1002/2017JD027120
Publisher site
See Article on Publisher Site

Abstract

Understanding the impact of deep convection on the thermodynamic structure of the tropical upper troposphere and lower stratosphere (UTLS) is vital because convection and temperatures play an important role in regulating stratospheric water vapor through direct convective injection and in enhancing the presence of thin cirrus clouds, both of which play a significant role in the climate. This study quantifies the UTLS vertical temperature structure changes near deep convection over the Pacific Warm Pool and the Tropical Atlantic Continental and Oceanic region. The deep convection observed from the Tropical Rainfall Measuring Mission satellite are collocated with high vertical resolution temperature profiles from the COSMIC GPS Radio Occultation satellites along with ERA‐Interim reanalysis from 2007 to 2011. COSMIC and ERA‐Interim observe warm temperature anomalies (0.2 to 0.8 K) within 10–14 km, then transitioning to a layer of cool anomalies (−0.4 to −1.5 K) within 14–17 km. Above the cold‐point tropopause, warm anomalies (<1 K) are observed for oceanic convection, whereas cool anomalies are displayed for land convection within 17–20 km. The amplitude of temperature anomalies increases for deeper convection, marked by higher 20 dBZ radar echo top heights or colder infrared cloud top temperatures. COSMIC also observes enhanced UTLS diurnal temperature variations of about 0.2–0.3 K in both regions near deep convection. ERA‐Interim shows generally good agreement with COSMIC on the UTLS temperature anomalies near deep convection but displays larger differences above the tropopause, especially near land convection.

Journal

Journal of Geophysical Research: AtmospheresWiley

Published: Jan 16, 2018

Keywords: ; ; ; ; ;

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off