CO2-plant effects do not account for the gap between dryness indices and projected dryness impacts in CMIP6 or CMIP5

Scheff, Jacob; S Mankin, Justin; Coats, Sloan; Liu, Haibo

doi:10.1088/1748-9326/abd8fd

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

CO2-plant effects do not account for the gap between dryness indices and projected dryness impacts in CMIP6 or CMIP5

2021
By Scheff, Jacob ; S Mankin, Justin ; Coats, Sloan ; ...
Source: Environmental Research Letters, 16(3), 034018

[PDF-3.13 MB]

Details You May Also Like

Details:

Journal Title:

Environmental Research Letters
Personal Author:

Scheff, Jacob ; S Mankin, Justin ; Coats, Sloan ; Liu, Haibo

Scheff, Jacob ; S Mankin, Justin ; Coats, Sloan ; Liu, Haibo Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research)
Description:

Recent studies have found that terrestrial dryness indices like the Palmer Drought Severity Index (PDSI), Standardized Precipitation Evapotranspiration Index (SPEI), and Aridity Index calculated from future climate model projections are mostly negative, implying a drying land surface with warming. Yet, the same models’ future runoff and bulk soil moisture projections instead show regional signals of varying sign, and their vegetation projections show widespread greening, suggesting that the dryness indices could overstate climate change’s direct impacts. Most modeling studies have attributed this gap to the indices’ omission of CO2-driven stomatal closure. However, here we show that the index-impact gap is still wide even in future-like model experiments that switch off CO2 effects on plants. In these simulations, mean PDSI, Aridity Index, and SPEI still decline broadly with strong warming, while mean runoff, bulk soil moisture, and vegetation still respond more equivocally. This implies that CO2-plant effects are not the dominant or sole reason for the simulated index-impact gap. We discuss several alternative mechanisms that may explain it.
Keywords:

[+]

General Environmental Science Public Health, Environmental And Occupational Health Renewable Energy, Sustainability And The Environment
Source:

Environmental Research Letters, 16(3), 034018
DOI:

https://doi.org/10.1088/1748-9326/abd8fd
ISSN:

1748-9326
Format:

PDF
Publisher:

IOP Publishing
Document Type:

Journal Article
Funding:

Grant no. NA20OAR4310414
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

[+]

urn:sha256:f9b5b0d8d9c9100d1193e7673818a4ca5766215731154640e53f95b723126b6a
Download URL:

https://repository.library.noaa.gov/view/noaa/58906/noaa_58906_DS1.pdf
File Type:

No Additional Files

More +

CO2-plant effects do not account for the gap between dryness indices and projected dryness impacts in CMIP6 or CMIP5

Details:

Supporting Files

You May Also Like