Radar estimates of aboveground biomass in boreal forests of interior Alaska

  title={Radar estimates of aboveground biomass in boreal forests of interior Alaska},
  author={E. Rignot and JoBea Way and Cynthia L. Williams and Leslie A. Viereck},
  journal={IEEE Trans. Geosci. Remote. Sens.},
Airborne SAR data gathered by the NASA/JPL three-frequency, polarimetric, radar system in winter, spring, and summer over the Bonanza Creek Experimental Forest, near Fairbanks, AK, are compared to estimates of whole-tree aboveground dry biomass from 21 forest stands and two clear-cuts. While C-band radar backscatter shows little sensitivity to biomass, L- and P-band radar backscatter increase by more than 6 dB when biomass increases from 5 to 200 tons/ha. Using second-order polynomial… 

P-band radar mapping of forest biomass in boreal forests of interior Alaska

AIRSAR data gathered in winter, spring, and summer over the Bonanza Creek Experimental Forest, near Fairbanks, Alaska are compared to estimates of whole-tree aboveground dry biomass from 21 forest

Spaceborne applications of P band imaging radars for measuring forest biomass

The worldwide need for large scale, updated, biomass estimates, achieved with a uniformly applied method, justifies a more in-depth exploration of multi-polarization long wavelength imaging radar applications for tropical forests inventories.

Temporal Survey of P- and L-Band Polarimetric Backscatter in Boreal Forests

  • Albert R. MonteithL. Ulander
  • Environmental Science, Mathematics
    IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
  • 2018
Temporal coherence at P-band was highest during night times when wind speeds are low, and severe temporal decorrelation was observed at L-band over timescales of days or more, whereas the P- band temporal coherence remained high for at least a month neglecting windy periods.

Forest Radar Biomass from Combined Backseatter Modeling Ecosystem and

Above-ground woody biomass is an important parameter for describing the fimction and productivity of fi~r-ested ecosyste~r~s. Recent studies have demonstrated that synthetic aperture radar (SAB) can

Estimation of boreal forest biomass using spaceborne SAR systems

  • S. SaatchiM. Moghaddam
  • Environmental Science, Mathematics
    IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)
  • 1999
The authors report on the use of a semi-empirical algorithm derived from a two layer radar backscatter model for forest canopies. The model stratifies the forest canopy into crown and stem layers,

Inference of forest biomass using P-band circular-polarized radar signals

Examines the possibility of using P-band frequency, circular-polarized radar signals for mapping and monitoring of forest biomass from space while at the same time minimizing the limiting effect of

Estimation of Above-Ground Biomass over Boreal Forests in Siberia Using Updated In Situ, ALOS-2 PALSAR-2, and RADARSAT-2 Data

The combination of multi-frequency, multi-polarization, and multi-temporal radar data is explored as one key approach to provide an accurate estimate of forest biomass in boreal forests.

Aboveground Forest Biomass Estimation Combining L- and P-Band SAR Acquisitions

The study shows that specific combinations of radar observables from L- and P-band lead to biomass predictions that are more accurate in comparison with single-band retrievals, and suggests that P- band is more sensitive to higher biomass and L-band to lower biomass forests.

Mapping of boreal forest biomass from spaceborne synthetic aperture radar

As part of the Boreal-Ecosystem Atmosphere Study (BOREAS), an investigation is being made of the use of satellite data including shuttle imaging radar-C (SIR-C), X-band synthetic aperture radar



Dependence of radar backscatter on coniferous forest biomass

Two independent experimental efforts have examined the dependence of radar backscatter on above-ground biomass of monospecie conifer forests using polarimetric airborne SAR data at P-, L- and C-bands, finding that the C-band backscattering coefficient shows much less sensitivity to total above- ground biomass.

The relationship between aboveground biomass and radar backscatter as observed on airborne SAR imagery

The initial results of an experiment to examine the dependence of radar image intensity on total above-ground biomass in a southern US pine forest ecosystem are presented. Two sets of data are

Retrieval of forest biomass from SAR data

Abstract In recent years, there has been an increasing interest in the use of radar data for observations of forest ecosystems. In particular, it was shown that the intensity of SAR images at L band

Relating forest biomass to SAR data

The authors present the results of an experiment defined to demonstrate the use of radar to retrieve forest biomass, finding the strong correlation of P-band backscatter intensity to forest biomass to be the most striking observation.

Mapping of forest types in Alaskan boreal forests using SAR imagery

From the authors' classification, it is predicted that current and future spaceborne SAR systems will have limited mapping capabilities when used alone, yet RADARSAT combined with J-ERS-1 and ERS-1 could resolve forest types with 80 percent accuracy, separate nonforest areas resulting from commercial logging or forest wildfire, and map river edges.

The effect of changing environmental conditions on microwave signatures of forest ecosystems - Preliminary results of the March 1988 Alaskan aircraft SAR experiment

Abstract In preparation for the first European Space Agency (ESA) Remote Sensing(ERS-I) mission,a series of multitemporal, multifrequency, multipolarization aircraft synthetic aperture radar (SAR)

The effect of topography on radar scattering from vegetated areas

  • J. V. Zyl
  • Environmental Science, Mathematics
    IEEE Trans. Geosci. Remote. Sens.
  • 1993
The ways in which radar scattering from vegetated areas is affected by the topography of the surface underneath the vegetation are discussed. It is shown, using a discrete scatterer model, that the

Radiative transfer theory for polarimetric remote sensing of pine forest at P band

Abstract In this paper, the radiative transfer “RT” theory for clustered vegetation structures is developed and used to interpret polarimetric radar backseattering measurement data from pine forest.

Boreal forests and atmosphere–biosphere exchange of carbon dioxide

The response of vegetation growth to fluctuations in climate or anthropogenic influences is an important consideration in the evaluation of the contribution of land biota to atmospheric CO2

Atmosphere-biosphere exchange of carbon dioxide in boreal forests

An ecophysiological model of photosynthesis and respiration by forest ecosystems was used to examine CO2 fluxes in 23 mature boreal forests near Fairbanks, Alaska. Simulated soil respiration,