A Closed-Form Expression of Soil Temperature Sensing Depth at L-Band

Shaoning Lv, Yijian Zeng, Zhongbo Su, Jun Wen

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)
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Abstract

L-band passive microwave remote sensing is one of the most effective methods to map the global soil moisture distribution, yet, at which soil depth satellites are measuring is still inconclusive. Recently, with the Lv's multilayer soil effective temperature scheme, such depth information can be revealed in the framework of the zeroth-order incoherent model when soil temperature varies linearly with soil optical depth. In this paper, we examine the relationships between soil temperature microwave sensing depth, penetration depth, and soil effective temperature, considering the nonlinear case. The soil temperature sensing depth often also named penetration depth is redefined as the depth where soil temperature equals the soil effective temperature. A method is developed to estimate soil temperature sensing depth from one pair of soil temperature and moisture measurement at an arbitrary depth, the soil surface temperature, and the deep soil temperature which is assumed to be constant in time. The method can be used to estimate the soil effective temperature and soil temperature sensing depth.

Original languageEnglish
Article number8648474
Pages (from-to)4889-4897
Number of pages9
JournalIEEE transactions on geoscience and remote sensing
Volume57
Issue number7
DOIs
Publication statusPublished - 1 Jul 2019

Fingerprint

soil temperature
Soils
Temperature
soil
penetration
soil moisture
temperature
soil depth
optical depth
Microwaves
soil surface
surface temperature
remote sensing
Soil moisture
Remote sensing
Multilayers
Moisture
method
Satellites

Keywords

  • Microwave remote sensing
  • penetration depth
  • soil effective temperature
  • soil optical depth
  • soil temperature sensing depth
  • ITC-ISI-JOURNAL-ARTICLE

Cite this

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title = "A Closed-Form Expression of Soil Temperature Sensing Depth at L-Band",
abstract = "L-band passive microwave remote sensing is one of the most effective methods to map the global soil moisture distribution, yet, at which soil depth satellites are measuring is still inconclusive. Recently, with the Lv's multilayer soil effective temperature scheme, such depth information can be revealed in the framework of the zeroth-order incoherent model when soil temperature varies linearly with soil optical depth. In this paper, we examine the relationships between soil temperature microwave sensing depth, penetration depth, and soil effective temperature, considering the nonlinear case. The soil temperature sensing depth often also named penetration depth is redefined as the depth where soil temperature equals the soil effective temperature. A method is developed to estimate soil temperature sensing depth from one pair of soil temperature and moisture measurement at an arbitrary depth, the soil surface temperature, and the deep soil temperature which is assumed to be constant in time. The method can be used to estimate the soil effective temperature and soil temperature sensing depth.",
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A Closed-Form Expression of Soil Temperature Sensing Depth at L-Band. / Lv, Shaoning; Zeng, Yijian; Su, Zhongbo; Wen, Jun.

In: IEEE transactions on geoscience and remote sensing, Vol. 57, No. 7, 8648474, 01.07.2019, p. 4889-4897.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - A Closed-Form Expression of Soil Temperature Sensing Depth at L-Band

AU - Lv, Shaoning

AU - Zeng, Yijian

AU - Su, Zhongbo

AU - Wen, Jun

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N2 - L-band passive microwave remote sensing is one of the most effective methods to map the global soil moisture distribution, yet, at which soil depth satellites are measuring is still inconclusive. Recently, with the Lv's multilayer soil effective temperature scheme, such depth information can be revealed in the framework of the zeroth-order incoherent model when soil temperature varies linearly with soil optical depth. In this paper, we examine the relationships between soil temperature microwave sensing depth, penetration depth, and soil effective temperature, considering the nonlinear case. The soil temperature sensing depth often also named penetration depth is redefined as the depth where soil temperature equals the soil effective temperature. A method is developed to estimate soil temperature sensing depth from one pair of soil temperature and moisture measurement at an arbitrary depth, the soil surface temperature, and the deep soil temperature which is assumed to be constant in time. The method can be used to estimate the soil effective temperature and soil temperature sensing depth.

AB - L-band passive microwave remote sensing is one of the most effective methods to map the global soil moisture distribution, yet, at which soil depth satellites are measuring is still inconclusive. Recently, with the Lv's multilayer soil effective temperature scheme, such depth information can be revealed in the framework of the zeroth-order incoherent model when soil temperature varies linearly with soil optical depth. In this paper, we examine the relationships between soil temperature microwave sensing depth, penetration depth, and soil effective temperature, considering the nonlinear case. The soil temperature sensing depth often also named penetration depth is redefined as the depth where soil temperature equals the soil effective temperature. A method is developed to estimate soil temperature sensing depth from one pair of soil temperature and moisture measurement at an arbitrary depth, the soil surface temperature, and the deep soil temperature which is assumed to be constant in time. The method can be used to estimate the soil effective temperature and soil temperature sensing depth.

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