# Presentation: 125075

## The CERES S'COOL Project

**Atmospheric Sciences**
**Atmospheric Sciences Data Center**
**Office of Education**
**NASA Langley Research Center**
**http://scool.larc.nasa.gov**

## The CERES Instrument

- 	The CERES instrument views the Earth with 3 telescopes, then the measurements are transmitted to the ground. For Earth scientists, receipt of the data begins a long process of determining what the data mean.

## Satellites Carrying the		 CERES Instrument

- TRMM Satellite
- 	launched Nov, 1997
- TERRA Satellite (EOS-AM)
- 	launch Dec, 1999
- Aqua Satellite
-     (EOS-PM)
- 	launch 2001?

## Global Cloud CoverAugust 26, 1993

## The CERES Experiment:

**Question:**
- What is the Effect of Clouds on the Earth’s Climate?

## Slide 6

## Slide 7

## Derived Product

**Derived Product**
**Requires Cloud Identification and Properties**

## Clouds Looking Up

## Clouds Looking Down

## Slide 11

## CERES Validation

**Consistency checks**
**Field campaigns (e.g., DOE ARM)**
**Monitoring networks (e.g., BSRN)**
**S’COOL Project**

## Concept

**Students provide ground observations for CERES overpass**
**Determine satellite overpass time**
**Observe cloud properties**
**Transmit results to NASA**
**Compare to satellite-retrieved properties**
**Data of value to CERES scientists**
**Real-world learning for students**

## Sample Overpass Time ReportAsheville, NC USA                                                 lat= 35.50 N  long= 277.34 Espace craft is - TERRA_______________________________________________

**              ****universal time****	****	****	****local**
**da      ****	****mo****	****year****	****hr****	****mn****	****time****	**
**	**
- 7	3	2001	16	41	11:41
- 8	3	2001	15	46	10:46
- 8	3	2001	17	23	12:23
- 9	3	2001	16	28	11:28
- 10	3	2001	17	11	12:11

## Slide 15

## Slide 16

## Comparing to Satellite

- Satellite and Student Observations Are Entered Into the S’COOL Database
- S’COOL Site Must Be Within Satellite Area
- Satellite and Student Observation Times Must Be Within 15 Minutes

## Effect of Mismatched Observation Times 

## FIRST S’COOL ComparisonCloud Observations Over Gloucester, VAJanuary 13 & 17, 1997

## Cloudy Day Comparison October 22, 1997 17:45 GMT

## Comparison ResultsOctober 22, 1997  17:45 GMT

- Comment:  Poquoson observed contrails - These may be what the Newport News
- students were reporting.  There also was a mid-level layer cloud to the south.

## Cloud Amount Comparison:Statistics

## Summary of Cloud Comparison

- The Students and Satellite Observations:
- 	Agree 			60 Out of 99 Times	(61%)
- 	Weakly Agree		29 Out of 99 Times	(29%)
- 	Disagree 		9 Out of 99 Times	(9%)
-  	Strongly Disagree	1 Out of 99 Times	(1%)

## Cloud Layer Comparison:Statistics

- Conclusion:  Satellite misses thin, sparse cirrus

## Over 700 participating schools

- Student observers in 47 nations
- More than 7000 observations to date

## Slide 26

## For More Information

- Web:  _[http://](http://scool.larc.nasa.gov/)__[scool](http://scool.larc.nasa.gov/)__[.](http://scool.larc.nasa.gov/)__[larc](http://scool.larc.nasa.gov/)__[.](http://scool.larc.nasa.gov/)__[nasa](http://scool.larc.nasa.gov/)__[.](http://scool.larc.nasa.gov/)__[gov](http://scool.larc.nasa.gov/)__[/](http://scool.larc.nasa.gov/)_
- Includes links to other resources
- E-mail:  _[scool](mailto:scool@larc.nasa.gov)__[@larc.nasa.gov](mailto:scool@larc.nasa.gov)_
- Color pdf file containing most of these slides at: _[http://asd-www.larc.nasa.gov/SCOOL/webslides.pdf](http://asd-www.larc.nasa.gov/SCOOL/webslides.pdf)_