Ocean fertilization by pyrogenic aerosol iron

Research output: Contribution to journalReview articlepeer-review

Authors

External organisations

  • Japan Agency for Marine-Earth Science and Technology
  • Alfred-Wegener-Institute for Polar and Marine Research

Abstract

Aerosols supply bioaccessible iron to marine biota which could affect climate through biogeochemical feedbacks. This paper review progresses in research on pyrogenic aerosol iron. Observations and laboratory experiments indicate that the iron solubility of pyrogenic aerosol can be considerably higher than lithogenic aerosol. Aerosol models highlight a significant contribution of pyrogenic aerosols (~20%) to the atmospheric supply of dissolved iron into the ocean. Some ocean models suggest a higher efficiency of pyrogenic iron in enhancing marine productivity than lithogenic sources. It is, however, challenging to quantitatively estimate its impact on the marine biogeochemical cycles under the changing air quality and climate.

Bibliographic note

Funding Information: Support for this research was provided to A.I. by JSPS KAKENHI Grant Number 20H04329, Integrated Research Program for Advancing Climate Models (TOUGOU) Grant Number JPMXD0717935715 from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan, and the joint research program of the Institute for Space-Earth Environmental Research, Nagoya University. Y.Y. is funded by DFG (German Research Foundation, YE170/2-1) and PalMod (Federal Ministry of Education and Research Germany, BMBF 01LP1505C). Z.S. and C.B. are funded by UK NERC - Natural Environment Research Council (NE/S00579X/1) and NERC CENTA Ph.D. studentship grant (NE/L002493/1). We thank Mrs. Chantal Jackson at the University of Birmingham for drawing the Fig. 1. Publisher Copyright: © 2021, The Author(s).

Details

Original languageEnglish
Article number30
Number of pages20
Journalnpj Climate and Atmospheric Science
Volume4
Issue number1
Early online date21 May 2021
Publication statusE-pub ahead of print - 21 May 2021