April 19 - 21, 2013

We mounted instruments on two towers in Black Rock Forest with helps from many people!

From left to right: Rahul Singh, Tim Eaton, Yunping Chen, Fung Liew, Qianyu Zhang, Bobby Stratakos, Nadia Berry, Tree Yi, Nicole Migliove, Max Trukhin, Eric Kutter, Cody Bachu, Satwika Reddy, George Hendry.

Our analytical model predicts the recirculation on the leeward side of a forested hill (Wang and Yi, 2012)

Wang, W. and C. Yi, A new nonlinear analytical model for canopy flow over a forested hill, Theoretical and Applied Climatology, DOI 10.1007/s00704-012-0599-9, 2012.

PPT

PPT

Xu, X., C. Yi, the influence of geometry on recirculation and co2 transport over forested hills, Meteorology and Atmospheric Physics, DOI: 10.1007/s00703-012-0224-6, 2012.

Yi-Hendrey group wants to measure these bubbles by setting up a two-tower system at Black Rock Forest

April 16 (Tuesday) before going to the BRF, 2013

Eric had a meeting with students (Geol. 216) for preparation of BRF project

George emphasized on safety issues

April 19 (Friday), 2013

At 6:00 AM students arrived on the campus

Bobby, Cody, Nicole, Max, Nadia, Tree, and Fung

We arrived at the BRF

Rahul and Nadia

Cody and Eric

George said " Get'em up, and mov'em out!"

Qianyu started working with her slope-tower team: Nicole, Max, Yunping and Tree

George's generator team: Fung, Rahul, and Nadia

Eric was going to the top-tower with his team: Cody, Bobby, Nocole

Tree moved poles to the top-tower

Eric mounted Li-cor and Net Radiation sensors on the top level of the top-tower

3D-Sonic, Li-Cor, and net radiation sensors were setup on the top level of the top-tower

Eric and Cody were working on the data logger

Cody was working on the data logger

Bobby was working on generator

Eric's team was busy

Eric's team was transport instruments on different levels

Eric

Satwika

The top tower

The top tower

Lunch time

Lunch time

Qianyu and Yunping were working on top level of the slope-tower

Max was transporting something to Qianyu and Yunping

Nicole, Max, and George

Max and Tree

Yunping and Qianyu

George was working on generator

George was teaching Max how to do it.

Max and George

Rahul was delivering temperature sensor up to the tower

Max, George, and Rahul

Max was working on the connnection

George

Tree kept eyes on Yunping and Qianyu on the tower

Qianyu and Yunping

George and Max

Nicole and Max worked together

George and Rahul

George and Rahul

Rahul was thinking of a problem

Eric was working on the data logger

Eric

Bobby, Cody, Nadia, and Satwika

Satwika and Nadia

Bobby, Cody, and Eric

Eric's team was working on the top-tower

Bobby, Cody, and Eric

Eric, Bobby, Cody, and Satwika

Nadia

Nadia

Satwika and Nadia

Friday Evening, April 19, 2013

Kitchen in the BRF

Matt, Qianyu, and George

Qianyu, Li (Chief cook), Tree

George bought beers and wine, while Tree bought the Chinese liquor

Eric

Cody

Fung was checking emails

Rahul was downloading pictures

Dinner time

Qianyu, Matt, Bobby, Nicole

Fung, Rahul, Cody

Satwika

Matt and Tree were playing a Chinese liquor game

Fung, Nadia, Satwika, and Cody

Tree was playing the game with Bobby

Rahul was studying

Li, Cody, and Satwika were cooking breakfast

Saturday Morning, April 20, 2013

They were preparing breakfast

George was making pancakes

Bobby, Nadia, Max, Nicole, and Qianyu

Moving to the field, Nadia opened the door

Saturday, April 20, 2013

George was driving

Arrived field, Eric, Cody, Nadia, Satwika, Bobby

Bobby, Nadia, and Tree

Started working

Max was cranking the tower up

Tree was cranking the tower up

Max's turn

Fung found a new way to cranking up

Rahul's turn

The cables were broken and Qianyu was going up to check

Qianyu found that three were broken

Qianyu was fixing the problems

Bobby, Cody, and Eric were working on the top-tower

The top-view from the top-tower

Bobby, Cody, and Satwika

The top tower

Fung was workinh on the generator

Rahul was working on the generator

Nadia and Bobby setup a sensor to measure ground heat flux

The slope-tower must be cranked down and cranked up again

Tim was watching and conducting the cables when we were cranking up the tower

Tree was cranking the tower up

Yunping was cranking the tower up

Fung was checking emails from the top of the top tower

To fix the guy-wire tangled problem, Max was cutting the branches of the tree.

George said: " A giant on the shoulders of two giants"

Max jumped up

Max jumped down

George and Tree were working on the guy wires

George and Tree

George and Tree

George and Tree

Lunch time

Lunch time

Yunping and Tim

Rahul found something very interesting

Bobby

Fung, Nadia, and Cody

Yunping and Tim were working on the fourth level on the slope-tower

Tim and Yunping 

Qianyu and Kat were moving sothing up to Tim and Yunping

All four up levels were finished

Tim

To fix the guy-wire tangled problem, the branches of trees must be cut off at very high level.

John brought a very high latter and his son Ben Brady and his son's friend to help.

Ben was on the top of very tall latter

Ben was sawing the branches.

Ben was sawing the branches on the other tree

John and Ben's friend

Ben was too tired and came down

Ben wanted to use the harness

Ben was equipped with harness

George and Qianyu were working on the fifth level of the slope tower

Ben climbed the very tall latter again

Ben held him on the tree by the harness

Ben cut off one big branch

Tree is moving it away.

We are working on solving the guy-wires tangled problem.

Yunping, Tree, and George

Qianyu was working on the data logger

So far both tower systems started collecting data

Saturday Evening, April 20, 2013

Nicole and Max were making food

Dinner time

Dinner time

They were playing the game: Nadia drew a picture and the rest gussed

George explained  the game to Li

George drew a picture

Sunday Morning, April 21, 2013

George came with Eric, Qianyu, and Tree worked on generators after his class. Qianyu was working on data logger

Breakfast

Tim

Bobby

Ready to go the field

They are ready to go the field. George, Eric, Tim, and Tree were talking with Bill (director of the BRF)

Bobby

Tree was talking about recirculation formation in the BRF

Qianyu, Max, John, Tree, and Kevin

They were measuring the heights of sensors on the slope-tower by triangle methods: Bobby, Nadia, Cody, Eric, and Satwika.

Tree was explaining to John: what is the main point of the tower systems

John, Max, Nicole, Tree, and Kevin (Professor from Columbia who conducts measurements of soil respiration)

John, Max, Nicole, Kevin, Tree

Rahul and John's dog

 June 8-9, 2013

From left to right:Tim Eaton, Bobby Stratakos, Rahul Singh, Jim Rice, Lili Ye, Saidan Qi, Sue Wei, Qianyu Zhang, Eric Kutter, Tree Yi, Li Guan

They arrived in afternoon of June 18, 2013. They will dismantel all the instruments from the towers aand move them back to Queens College on June19, 2013. In the mid-night of June 18, they will do smoke experiments (watch drainge flow) and generator-turn on/off experiments. Before doing that, they will make dumplings to celebrate the end of the experiments.

Saturday Evening, June 8, 2013

They started making dumplings.

They were making dumplings.

Jim was showing magic (something through glasses)

Delicious!!!

Jim and Tree were playing Chinese Liquor Game.

Qianyu

Jim

Sunday, June 9, 2013

We are ready to take all instruments down.

Rahul and Bobby were working on generators

Lili and Jim were working on the slope tower

3D sonic and Li-Cor at the top-level on the top-tower.

Gaurav Singh is a professional photographor

Rahul and Bobby were moving the instruments from the top of the hill to the bottom

Rahul and Eric

Tree was climbing the tower

Tim was ready to climb the tower

Tim and Tree

The top-tower (also called fire tower)

Jim, Sue, Saidan, and Lili were working on the wires

This is our professional photographer, Gaurav Singh

Typically vegetated complex terrain

Lunch time

All the photos were taken by this gentleman, Gaurav Singh.

Tree

Tim

360 degree view from top tower of the black rock forest