Diurnal Cycle of Precipitation and Cloud Clusters in the MJO and ITCZ Over the Indian Ocean

Kerns, Brandon W.; Chen, Shuyi S.

doi:10.1029/2018jd028589

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Diurnal Cycle of Precipitation and Cloud Clusters in the MJO and ITCZ Over the Indian Ocean

2018
By Kerns, Brandon W. ; Chen, Shuyi S.
Source: Journal of Geophysical Research: Atmospheres, 123(18), 10,140-10,161.

[PDF-8.73 MB]

Select the Download button to view the document

This document is over 5mb in size and cannot be previewed

Details You May Also Like

Details:

Journal Title:

Journal of Geophysical Research: Atmospheres
Personal Author:

Kerns, Brandon W. ; Chen, Shuyi S.

Kerns, Brandon W. ; Chen, Shuyi S. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; JISAO (Joint Institute for the Study of the Atmosphere and Ocean)

OAR (Oceanic and Atmospheric Research) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; JISAO (Joint Institute for the Study of the Atmosphere and Ocean) Less -
Description:

Abstract Satellite observations of the diurnal cycle of precipitation and cloud clusters show a dominant nighttime maximum over the tropical Indian Ocean, similar to other basins. The nighttime maximum is associated with the relatively long lifetime of large convective systems that initiated during the afternoon when the sea surface temperature (SST) reached its diurnal maximum as first showed in Chen and Houze (1997, https://doi.org/10.1002/qj.49712353806). Shipborne and island-based radar data from Dynamics of the Madden-Julian Oscillation show distinct characteristics of the diurnal cycle in the equatorial region and Intertropical Convergence Zone (ITCZ). A secondary afternoon precipitation maximum occurs under light surface winds (<5 m/s) when the diurnal cycle of SST is large (0.5–1.7 °C) in the equatorial region during the suppressed phase of the Madden-Julian Oscillation (MJO). The afternoon maximum was from short-lived convective systems with rain rates >10 mm/hr. In contrast, during the active MJO and in the ITCZ, the secondary afternoon maximum is mostly absent as the surface winds were generally >5 m/s and reduced afternoon SST warming to less than 0.5 °C. The Tropical Rainfall Measurement Mission Multiplatform Precipitation Analysis does not resolve the secondary afternoon maximum in heavier rain rates from short-lived small systems, but it suggests a more pronounced night-morning maximum in the ITCZ than in the MJO. Infrared 208-K cloud cluster analysis show that this difference in the morning maximum was due to the greater number of long-lasting, large convective systems (>~200 km in diameter) persisting into the morning in the ITCZ.
Source:

Journal of Geophysical Research: Atmospheres, 123(18), 10,140-10,161.
DOI:

https://doi.org/10.1029/2018jd028589
Document Type:

Journal Article
Rights Information:

Other
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:3c5334081a8b46600feae99ebd63043d6ec4db1c642f9e66cbb4b67ec0bbed7f
Download URL:

https://repository.library.noaa.gov/view/noaa/21042/noaa_21042_DS1.pdf
File Type:

No Additional Files

More +

Diurnal Cycle of Precipitation and Cloud Clusters in the MJO and ITCZ Over the Indian Ocean

Details:

Supporting Files

You May Also Like