Tropical Pacific SST and ITCZ Biases in Climate Models: Double Trouble for Future Rainfall Projections?

Samanta, Dhrubajyoti; Karnauskas, Kristopher B.; Goodkin, Nathalie F.

doi:10.1029/2018GL081363

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

Tropical Pacific SST and ITCZ Biases in Climate Models: Double Trouble for Future Rainfall Projections?

2019
By Samanta, Dhrubajyoti ; Karnauskas, Kristopher B. ; Goodkin, Nathalie F.
Source: Geophysical Research Letters, 46, 2242-2252.

[PDF-1.42 MB]

Details Supporting Files Related Documents You May Also Like

Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Samanta, Dhrubajyoti ; Karnauskas, Kristopher B. ; Goodkin, Nathalie F.

Samanta, Dhrubajyoti ; Karnauskas, Kristopher B. ; Goodkin, Nathalie F. Less -
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

The double Intertropical Convergence Zone bias remains a persistent problem in coupled general circulation model simulations. Due to the strong sea surface temperature (SST)‐convection relationship in the tropics, precipitation biases are sensitive to background SST. Using historical simulations of 24 coupled general circulation models and an atmospheric general circulation model, we show that cold equatorial SST biases at least exacerbate double Intertropical Convergence Zone biases in the Pacific. A linear regression model is used to demonstrate that improved predictability of precipitation trends is possible with such model‐dependent information as mean‐state SST biases accompanying projected SST trends. These results provide a better understanding of the root of the double Intertropical Convergence Zone bias and a possible path to reduced uncertainty in future tropical precipitation trends.
Keywords:

[+]

Climatology Modeling Precipitation
Source:

Geophysical Research Letters, 46, 2242-2252.
DOI:

https://doi.org/10.1029/2018GL081363
Document Type:

Journal Article
Rights Information:

CC BY-ND
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:28561e96c1c62d1b41899ddcf19778b990ffbd1bcc586a0dc5f25130429d2e7c
Download URL:

https://repository.library.noaa.gov/view/noaa/25101/noaa_25101_DS1.pdf
File Type:

	psd	htm
	Climatological precipitation data from AGCM simulations	htm

More +