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Welcome to eoApp US.

The free Great Lakes Monitoring Service is interrupted over the winter period. We hope to see you again at the eoApp-US in March 2017.

Find further free data sets in various resolutions at http://eoapp.eomap.com or contact us via info@eomap.com if you need further information.

The EOMAP team.

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eoApp US
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30 days average no value
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Introduction

Welcome to eoApp US, a free visualiser of EOMAP's water quality products covering selected areas across the US. Currently, you can see data for one region in Florida.

Using its proprietary science, EOMAP is now generating these products in near real time for selected waters, e.g. in Europe and Australia. We also have the capability to go back in time as far as 1984. If you are interested in purchasing or subscribing to any of these products, please visit our online store or contact us via info@eomap.com.

To download an information booklet on these products, click here.

What this eoApp shows

Turbidity: : a measure of the degree to which light is being backscattered by particles in the water. Tracking changes in turbidity is useful when for example monitoring sediment plumes from dredging and dumping activities. The measurement unit is Earth Observation Turbidity Unit (ETU), which is similar to Formazine Turbidity Unit (FTU) or Nephelometric Turbidity Unit (NTU). It is linearly related to Total Suspended Matter (TSM) at low to moderate turbidity values.

Chlorophyll-a: Chlorophyll-a is an essential pigment included in phytoplankton cells and therefore a measure of phytoplankton. The displayed Chlorophyll-a CHL is calculated from total scattering and total organic absorption of water constituents. Unit is [µg/l]

HAB Indicator: Harmful Algae Blooms (HAB) indicator shows possible areas affected by harmful algae blooms formed by cyanobacteria.

How to use this eoApp

On the right hand side of the top bar, you will find the basic map tools for interacting with the map, such as panning, zooming, and placing a virtual measuring station.

In the blue panel on the right hand side, you can essentially do following things:

  • Select which of the two parameters you wish to visualise: turbidity or chlorophyll-a.
  • Select for which date or time period you wish to see your selected parameter. Currently you can see three options:
    • Daily: displays the parameter values as raster data derived from satellite data according to the sensor specifications, e.g. using Landsat images each pixel has resolution of 30mx30m. Clouds and pixels with bad quality are not visible
    • Daily Mean (D'Mean)
      for 30m resolution: mean parameter value of all pixels of a whole waterbody based on OpenStreetMap polygons. Pixels for a minimum of 10% of the waterbody area must be available.
      for 500m resolution: pixelwise mean value of all pixels of one day.
    • Moving Mean (M'Mean): pixelwise mean of all pixels of the previous 7 days.
    • Seasonal: average pixelwise parameter values for a fixed time period, e.g. May-September 2014, using all available data
  • See the parameter value and geographic coordinates for your virtual measuring station.
  • Generate a time series plot of the selected parameter value at your virtual measuring station.

FAQ

Q: I am interested in a location outside the polygon areas that you feature here. How can I view water quality maps for my location?
A: Please send us an email indicating the area you are interested in. If we get enough requests for the same area, we could add it to this free visualiser. Otherwise, we are happy to give you a no obligations quote for how we could meet your specific needs.

Q: How can I learn more about these types of satellite-derived map and data water quality products?
A: You can start by downloading our related information booklet . Of course, this does not cover everything, but you will find links to additional reading in the booklet.

Q: We are an organisation that would like to subscribe to your data feed for turbidity and visibility over our own areas of interest. Can you provide us with our own eoApp for our project?
A: Absolutely. We would set you up with your own secure eoApp, covering your area(s) of interest and we can also modify some of the functionality to suit your needs.

Q: Can I get higher/other resolution data as well?
A: Yes, we also offer a 500m/250m/30m product or even a 2m product. Just send us an email with your requested area or visit our online store at www.eomap.com/store

About EOMAP

EOMAP is the leading commercial provider in satellite-derived information on aquatic systems, acting worldwide as an operational mapping service provider for the offshore industry and environmental agencies. Pioneering in the field of commercial, satellite-derived high resolution water quality and bathymetry, EOMAP solutions rely on standardized physical models which are independent of scale, sensor type, and geographic location. Key services include satellite derived bathymetry surveys, seafloor mapping and operational water quality monitoring. EOMAP value adding services can furthermore be applied at regional through to intercontinental scales, providing continuous and long term environmental information through integrating multiple satellite resources.

Disclaimer

Earth observation data are in general recorded under changing environmental conditions. EOMAP value adding software corrects for most relevant environmental conditions. However, with respect to the physical nature of the remote sensing method the achievable product quality can differ due to varying observation angles, varying atmospheric(-), surface(-) and in-water conditions or changing sensor raw data quality with each scene. Therefore, EOMAP cannot take any responsibility caused by the usage and interpretation of the remote sensing products. Of course, EOMAP will undertake all possible efforts to assure a constant product quality.

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Imprint

EOMAP GmbH & Co. KG
Schloss Seefeld
Schlosshof 4a
D-82229 Seefeld
Germany

phone: +49 (0) 8152 99861 0
email: info@eomap.com

Headquaters of EOMAP GmbH & Co. KG:
Schloss Seefeld
Schlosshof 4a
D-82229 Seefeld
Germany

HR-Number HRA: 88424
CEO: Dr. Thomas Heege


© Design by Agentur Steckenpferd

Disclaimer

Earth observation data are in general recorded under changing environmental conditions. EOMAP value adding software corrects for most relevant environmental conditions. However, with respect to the physical nature of the remote sensing method the achievable product quality can differ due to varying observation angles, varying atmospheric(-), surface(-) and in-water conditions or changing sensor raw data quality with each scene. Therefore, EOMAP cannot take any responsibility caused by the usage and interpretation of the remote sensing products. Of course, EOMAP will undertake all possible efforts to assure a constant product quality.

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