Global monthly sea surface nitrate fields estimated from remotely sensed sea surface temperature, chlorophyll, and modeled mixed layer depth

Arteaga, Lionel, Pahlow, Markus and Oschlies, Andreas (2015) Global monthly sea surface nitrate fields estimated from remotely sensed sea surface temperature, chlorophyll, and modeled mixed layer depth Geophysical Research Letters, 42 (4). pp. 1130-1138. DOI 10.1002/2014GL062937.

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Supplementary data:

Abstract

Information about oceanic nitrate is crucial for making inferences about marine biological production and the efficiency of the biological carbon pump. While there are no optical properties that allow direct estimation of inorganic nitrogen, its correlation with other biogeochemical variables may permit its inference from satellite data. Here we report a new method for estimating monthly mean surface nitrate concentrations employing local multiple linear regressions on a global 1° by 1° resolution grid, using satellite-derived sea surface temperature, chlorophyll, and modeled mixed layer depth. Our method is able to reproduce the interannual variability of independent in situ nitrate observations at the Bermuda Atlantic Time Series, the Hawaii Ocean Time series, the California coast, and the southern New Zealand region. Our new method is shown to be more accurate than previous algorithms and thus can provide improved information on temporal and spatial nutrient variations beyond the climatological mean at regional and global scales.

Document Type: Article
Additional Information: WOS:000351851900022
Keywords: Nitrate; Atmospheric temperature; Chlorophyll; Nitrates; Oceanography; Optical correlation; Optical properties; Submarine geophysics; Surface properties; Time series Biological production; Inorganic nitrogen; Interannual variability; Mixed layer depths; Multiple linear regressions; New Zealand region; Sea surface temperature (SST); Temporal and spatial; Surface waters
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > SFB 754 > B2
OceanRep > SFB 754
OceanRep > SFB 754 > B1
Refereed: Yes
DOI etc.: 10.1002/2014GL062937
ISSN: 0094-8276
Projects: SFB754, SPACE
Date Deposited: 12 Mar 2015 08:36
Last Modified: 19 Dec 2017 12:45
URI: http://eprints.uni-kiel.de/id/eprint/27998

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