slide1
Download
Skip this Video
Download Presentation
Using Multi-temporal MODIS 250 m Data to Calibrate and Validate a Sediment Transport Model for Environmental Monitoring

Loading in 2 Seconds...

play fullscreen
1 / 21

Using Multi-temporal MODIS 250 m Data to Calibrate and Validate a Sediment Transport Model for Environmental Monitoring - PowerPoint PPT Presentation


  • 172 Views
  • Uploaded on

Using Multi-temporal MODIS 250 m Data to Calibrate and Validate a Sediment Transport Model for Environmental Monitoring of Coastal Waters. Richard L. Miller, Carlos E. Del Castillo NASA, Applied Sciences Directorate, SSC Chandrasekhar Chilmakuri, A. Alex McCorquodale, Ioannis Georgiou

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Using Multi-temporal MODIS 250 m Data to Calibrate and Validate a Sediment Transport Model for Environmental Monitoring ' - arich


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1
Using Multi-temporal MODIS 250 m Data to Calibrate and Validate a Sediment Transport Model for Environmental Monitoring of Coastal Waters
slide2
Richard L. Miller, Carlos E. Del Castillo

NASA, Applied Sciences Directorate, SSC

Chandrasekhar Chilmakuri, A. Alex McCorquodale, Ioannis Georgiou

FMI Center for Environmental Modeling, University of New Orleans

Brent A. McKee

Department of Earth and Environmental Sciences, Tulane University

Eurico J. D’Sa

Coastal Studies Institute, Louisiana State University

slide3
Importance of Suspended Sediments

High concentrations of suspended materials directly affect many water column

and benthic processes such as phytoplankton productivity, coral growth,

productivity of submerged aquatic vegetation, nutrient dynamics, and the

transport of pollutants and other materials.

Knowing the concentration, spatial distribution, and dynamics of

suspended sediments in coastal aquatic systems is an important goal of

many research and environmental monitoring programs.

The distribution and flux of suspended sediments is highly variable in coastal

environments and vary over a broad spectrum of time and space scales.

slide4
Space Observations & Modeling

Traditional field measurements can not effectively monitor suspended sediments

at the desired spatial and temporal scales

Use of remote sensing technology to map suspended sediment is well documented.

Problems with clouds, spatial resolution, and revisit time.

Use of numerical models for environmental studies is also widely documented.

No problem with clouds – however, limited observations for boundary and

initial conditions.

Potential solution – combine remote sensing and numerical model.

slide5
MODIS 250 m Data
  • MODIS Terra (morning) and Aqua (afternoon)
slide6
MODIS 250 m Data
  • MODIS Terra (morning) and Aqua (afternoon)
  • ca 1 ½ day revisit time
slide7
MODIS 250 m Data
  • MODIS Terra (morning) and Aqua (afternoon)
  • ca 1 ½ day revisit time
  • TSM vs. MODIS Terra (Miller and McKee, 2004)

r2 = 0.96

slide8
MODIS 250 m Data
  • MODIS Terra (morning) and Aqua (afternoon)
  • ca 1 ½ day revisit time
  • TSM vs. MODIS Terra (Miller and McKee, 2004)

Band 1

620 – 670 nm

Band 2

841 – 876 nm

SSC MODIS X-band ground station

slide9
ECOMSED Model

The Estuarine Coastal and Ocean Modeling System with Sediment, ECOMSED,

is a derivative model from the Princeton Ocean Model (POM).

Has a comprehensive sediment model that simulates the combined effects of

currents and waves on the resuspension and settling of inorganic particles.

Hydrodynamics and the transport components of the model have been calibrated

and validated for Lake Pontchartrain, the sediment transport module of the

model has not.

slide10
Case Study: Lake Pontchartrain, LA
  • shallow urbanized estuary
  • wind-driven resuspension and sediment transport
  • transport of pollutants / fecal coliform (human health)
  • nursery to many fish species
slide13
Conclusions and Future Work

The ECOMSED model calibration was significantly improved using multi-

temporal TSM images derived from MODIS 250 m images

The model captured the general spatial distribution as indicated in the MODIS

images; however, the model tended to over-estimate suspended sediment

concentrations in shallow areas.

Future improvements include: field samples to better calibrate MODIS images

(i.e., Aqua), field studies to better define the spatial variation in the sediment

parameters in the numerical model, and modifying the model to accept

spatially varying sediment and wind fields.

Conduct numerical model simulations and processed image data to provide

reliable estimates of storm water discharge and fecal coliform distributions.

planet earth a dynamic system
Planet Earth - a Dynamic System

Forces acting on the Earth system

Earth system responses

IMPACTS

Feedbacks

slide17
Overarching Science Questions

How is the Earth changing and what are the consequences of life on Earth?

  • How is the global Earth system changing?
  • What are the primary forcings of the Earth system?
  • How does the Earth system respond to natural and human-induced changes?
  • What are the consequencesof changes in the Earth system for human civilization?
  • How well can we predictfuture changes in the Earth system?
applications of national priority
Carbon

Management

Aviation

Energy Management

Air Quality

Coastal Management

Homeland

Security

Disaster Management

Ecological Forecasting

Water

Management

Invasive Species

Public Health

Agricultural

Efficiency

Applications of National Priority
ad