The potential of remote sensing data for decision makers at the state, local and tribal level: experiences from NASA’s Synergy program

Kalluri, Satya; Gilruth, P.; Bergman, Ramona

doi:10.1016/j.envsci.2003.08.002

Cited by 44 publications

(30 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Those past analyses have been mainly conducted at local scale, over a limited number of fields, and need to be extrapolated over a larger agricultural area to estimate the overall impacts of crop management practices. Because of their high coverage capacity (several square kilometers) and temporal revisits, remote sensing satellites can be used as a suitable tool for monitoring land surface changes [10][11][12]. Within the range of onboard sensors in different satellites, those that function in the microwave domain have the twofold advantage of not being disturbed by atmospheric conditions [13] (except for large convective systems) while offering a high degree of sensitivity to surface parameters [14].…”

Section: Introductionmentioning

confidence: 99%

Monitoring Wheat and Rapeseed by Using Synchronous Optical and Radar Satellite Data—From Temporal Signatures to Crop Parameters Estimation

Fieuzal¹,

Baup²,

Marais-Sicre³

2013

ARS

View full text Add to dashboard Cite

This paper investigates the sensitivity of multi-temporal SAR data acquired at different frequencies (X-, C-and L-bands), polarizations (HH, VV, VH and HV) and incidence angles (from 24˚ to 53˚) during the growing season of two winter crops (rapeseed and wheat). This study was part of a multi-sensor crop-monitoring experiment that was performed from February to November 2010 (MCM'10). During the experiment, dense series of satellite data were acquired in microwave, optical and thermal domains (more than 150 images were provided by TerraSAR-X, Radarsat-2 Alos, Formosat-2, Spot-4/5 and Landsat-5/7) were synchronous with ground measurements over an agricultural area located in southwestern France, near Toulouse. An angular normalization of radar signals is first performed for each crop type at X-and C-bands by using a dense temporal satellite series and the complementarity provided by microwave and optical data. The results show that the angular sensitivity of radar backscatter decreases with the increase of the vegetation index (from 0.4 dB.˚− 1 over bare soils to 0.05 dB.˚− 1 for fully vegetated fields). Lower angular sensitivity is observed at X-band (compared to C-band), and for the cross-polarized signal. Analyses of the temporal signatures of the radar backscatter show a well-marked signal dynamic at X-, C-and L-bands, depending on the crops and theirs associated phenological stages. During the stems elongation of wheat while the NDVI increases of 0.2, a dynamic of 10 dB is observed at X-band and at C-band with VV polarization. Interesting behaviors are also observed during the crop senescence with an increase of several dB (depending on the sensor configuration), while the NDVI decreases of 0.5. Over rapeseed, cross-polarized backscatters offer promising dynamic of 6 dB during the seed development, while the NDVI saturates at maximum values. The use of radar signals, in complement of optical, for crop parameters monitoring is achieved in terms of leaf area index and crop height estimations. Over rapeseed, best correlations between crop parameters and radar signals are obtained at C-band, by combining co-and cross-polarized backscatters (R 2 > 0.61). Over wheat, best results are achieved by using X-band data (R 2 > 0.64).

show abstract

Section: Introductionmentioning

confidence: 99%

Monitoring Wheat and Rapeseed by Using Synchronous Optical and Radar Satellite Data—From Temporal Signatures to Crop Parameters Estimation

Fieuzal¹,

Baup²,

Marais-Sicre³

2013

ARS

View full text Add to dashboard Cite

show abstract

“…For situations of limited funding, as is the case in Uganda, adequate information for decision-making for immediate interventions can be obtained with the only costs being for the equipment and specialised personnel. This method demonstrates the tangible benefits of using remote sensing, which include savings in cost and time (Kalluri et al, 2003). The method is straightforward and easy to apply, requiring only the temporal evaluation of vegetation cover at the moments of high intensity rainfall, and the spatial distribution of slopes in the area (Visser and Jansen, in press).…”

Section: Remarks On the Methodsmentioning

confidence: 97%

“…However, this is no simple matter. Policy and decision-making in the context of sustainable development requires rapid, effective and efficient access to and integration of appropriate current information from a wide range of sources and disciplines, including information on land cover dynamics derived from remotely sensed data (Xiuwan, 2002;Kalluri et al, 2003;Sedano et al, 2005). The existing information on the environment and natural resources of the country is inadequate for appropriate policy development (NEAP, 1994).…”

Section: Introductionmentioning

confidence: 99%

A tool for rapid assessment of erosion risk to support decision-making and policy development at the Ngenge watershed in Uganda

2010

View full text Add to dashboard Cite

“…There is a potential for policy independent environmental EO applications, for example, in precision agriculture [70] and insurances [71][72][73]. Apart from this, there are certainly possibilities for commercialization within the context of environmental policies, particularly where budgets are available from within operational policy interventions.…”

Section: Discussionmentioning

confidence: 99%

The Function of Remote Sensing in Support of Environmental Policy

et al. 2010

View full text Add to dashboard Cite

Limited awareness of environmental remote sensing's potential ability to support environmental policy development constrains the technology's utilization. This paper reviews the potential of earth observation from the perspective of environmental policy. A literature review of "remote sensing and policy" revealed that while the number of publications in this field increased almost twice as rapidly as that of remote sensing literature as a whole (15.3 versus 8.8% yr −1 ), there is apparently little academic interest in the societal contribution of environmental remote sensing. This is because none of the more than 300 peer reviewed papers described actual policy support. This paper describes and discusses the potential, actual support, and limitations of earth observation with respect to supporting the various stages of environmental policy development. Examples are given of the use of remote sensing in problem identification and policy formulation, policy implementation, and policy control and evaluation. While initially, remote sensing contributed primarily to the identification of environmental problems and policy implementation, more recently, interest expanded to applications in policy control and evaluation. The paper concludes that the potential of earth observation to control and OPEN ACCESSRemote Sensing 2010, 2 1732 evaluate, and thus assess the efficiency and effectiveness of policy, offers the possibility of strengthening governance.

show abstract

The potential of remote sensing data for decision makers at the state, local and tribal level: experiences from NASA’s Synergy program

Cited by 44 publications

References 22 publications

Monitoring Wheat and Rapeseed by Using Synchronous Optical and Radar Satellite Data—From Temporal Signatures to Crop Parameters Estimation

Monitoring Wheat and Rapeseed by Using Synchronous Optical and Radar Satellite Data—From Temporal Signatures to Crop Parameters Estimation

A tool for rapid assessment of erosion risk to support decision-making and policy development at the Ngenge watershed in Uganda

The Function of Remote Sensing in Support of Environmental Policy

Contact Info

Product

Resources

About