Vertical profile observation of chlorophyll <italic style="font-style: italic">a</italic> in the Norwegian Sea based on the spaceborne lidar ICESat-2

Jue HUANG; Tianwei DU; Yulei MU; Jinzhi ZHANG; Yilin LIU; Yue MA

doi:10.1007/s00343-026-5456-2

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Vertical profile observation of chlorophyll a in the Norwegian Sea based on the spaceborne lidar ICESat-2

Updated：2026-08-06

- Vertical profile observation of chlorophyll a in the Norwegian Sea based on the spaceborne lidar ICESat-2
- Journal of Oceanology and Limnology Pages: 1-14(2026)
- Affiliations：
  
  1.College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, China
  2.School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
  3.College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
  4.School of Electronic Information, Wuhan University, Wuhan 430072, China
- Author bio：
  
  liu@sdust.edu.cn
- Funds：
- DOI：10.1007/s00343-026-5456-2
  CLC：
- Received：02 December 2025，
  
  Online First：06 August 2026，
- Accepted：
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HUANG Jue,DU Tianwei,MU Yulei,et al.Vertical profile observation of chlorophyll ,a in the Norwegian Sea based on the spaceborne lidar ICESat-2[J].Journal of Oceanology and Limnology,
DOI：

HUANG Jue,DU Tianwei,MU Yulei,et al.Vertical profile observation of chlorophyll ,a in the Norwegian Sea based on the spaceborne lidar ICESat-2[J].Journal of Oceanology and Limnology, DOI：.

摘要

Abstract

The chlorophyll-

(Chl-

) concentration is a core indicator for assessing the health of marine ecosystems. With single-photon-sensitive detection capability

satellite-borne lidar technology can penetrate the sea surface to obtain subsurface optical signals in polar nights

overcoming the constraints of passive remote sensing. In this study

the backward scattering coefficient of particulate matter (

) was inverted based on the lidar equation

and a trinomial fitting model was developed to convert

(532) to Chl

using the Biogeochemical-Argo (BGC-Argo) measured data in the Norwegian Sea. The retrieval accuracy was verified using corresponding BGC-Argo buoy measurements and Moderate Resolution Imaging Spectroradiometer (MODIS) water color data. Four Ice

Cloud

and Land Elevation Satellite-2 (ICESat-2) orbital photon counting lidar tracks data (2020–2024) of the Norwegian Sea were selected to retrieve the spatial and temporal distribution characteristics of the vertical Chl-

profile. Horizontally

high Chl-

concentration (up to

2 mg/m

owing to warm-warm convergence) was observed at the eastern edge and in the central sea

followed by at turbid nearshore waters at low latitudes

and low concentrations (

0.5 mg/m

) were observed in the open sea. Vertically

significant stratification was observed in the depth range of 3–14 m. We verified the feasibility of ICESat-2 to invert the vertical profiles of Chl

under complex sea conditio

ns at high latitudes

and filled the observation gap of passive remote sensing in polar nights.

关键词

Keywords

references

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Vertical profile observation of chlorophyll a in the Norwegian Sea based on the spaceborne lidar ICESat-2

DOI：10.1007/s00343-026-5456-2

摘要

Abstract

关键词

Keywords

references