## Sunday, November 4, 2007

### Calculations on out of state commuting, and international student air miles

Matt - That is amazing. Good job!

RE: out of state students:
For states adjacent to Ohio, I think it is fair to assume these student will be driving back and forth. I would pick a major/central city in each state and estimate drive miles * the number of students from that state. Then apply the same assumption (4 trips home/year)

eg INDIANA = RT Indianapolis miles to Athens* 4*# of students from IN
PENN = RT Pittsburgh miles to Athens* 4* # students from PA
KY = RT Lexington miles to Athens* 4* # students from KY

RE: Foreign students.
My gut feeling here is that these international student numbers should be given to Samantha Williams from our class (sw223407@ohiou.edu). I am cc-ing her here.

We have a lot of students from Africa, East Asia, India [in addition to a lot of other places]. For many of these students - they come here and *might* be able to visit home once or twice during the course of their studies.

What I would recommend is to estimate that each international student will fly the equivalent of a RT to Paris every year. That will over estimate for some, and wildly underestimate for others (China, Japan, African continent, etc). It's a start.

Using this URL = http://www.webflyer.com/travel/milemarker/
. . . ROUND TRIP Air Miles . . .
CMH - JFK = 962 miles (1548 km)
JFK = CDG (Paris) = 8060 miles (12980 km)

So these data would be plugged into the student air travel part of the Carbon Campus Calculator (via Samantha's section).

Just to be consistent I am going to paste this email into the blog, so that we can have a record of this collaboration.

--KJB

Quoting ma236805@ohio.edu:

> Hi Dr. Brown,
>
> I got the In-state stuff typed into a spreadsheet and calculated the
> distance that everyone(from Ohio) travels to get here based on 4 trips back
> and forth each year. I used GIS to estimate distance from the center of each
> county. The total came out to be over 16,000,000 miles!And that doesn't even
> count the 3,000 out-of-state and foreign students. Any ideas on how / if I should do
> those? The 1056 foreign students will be especially difficult because they're
> home countries are not given in this info.
>
> Thanks again for your help getting this info. It isn't what I had in
> mind when I volunteered to do the commuter mileage, but you were right, it is
> better than nothing.
>
> -Matt

Kim J. Brown, Ph.D.
Assistant Professor
[ecophysiology & ecosystem function]
Dept. of Environmental and Plant Biology
Ohio University, Athens OH 45701

Lab = http://ecophys.plantbio.ohiou.edu/index.html
Dept = http://www.plantbio.ohiou.edu