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Title: A zero-power warming chamber for investigating plant responses to rising temperature

Abstract

Advances in understanding and model representation of plant and ecosystem responses to rising temperature have typically required temperature manipulation of research plots, particularly when considering warming scenarios that exceed current climate envelopes. In remote or logistically challenging locations, passive warming using solar radiation is often the only viable approach for temperature manipulation. But, current passive warming approaches are only able to elevate the mean daily air temperature by ~1.5 °C. Motivated by our need to understand temperature acclimation in the Arctic, where warming has been markedly greater than the global average and where future warming is projected to be ~2–3 °C by the middle of the century; we have developed an alternative approach to passive warming. Our zero-power warming (ZPW) chamber requires no electrical power for fully autonomous operation. It uses a novel system of internal and external heat exchangers that allow differential actuation of pistons in coupled cylinders to control chamber venting. This enables the ZPW chamber venting to respond to the difference between the external and internal air temperatures, thereby increasing the potential for warming and eliminating the risk of overheating. During the thaw season on the coastal tundra of northern Alaska our ZPW chamber was able tomore » elevate the mean daily air temperature 2.6 °C above ambient, double the warming achieved by an adjacent passively warmed control chamber that lacked our hydraulic system. We describe the construction, evaluation and performance of our ZPW chamber and discuss the impact of potential artefacts associated with the design and its operation on the Arctic tundra. Our approach is highly flexible and tunable, enabling customization for use in many different environments where significantly greater temperature manipulation than that possible with existing passive warming approaches is desired.« less

Authors:
 [1];  [1];  [1]; ORCiD logo [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Environmental and Climate Sciences Dept.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1392226
Report Number(s):
BNL-114226-2017-JA
Journal ID: ISSN 1726-4189; R&D Project: 80821; YN1901000
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Biogeosciences (Online)
Additional Journal Information:
Journal Name: Biogeosciences (Online); Journal Volume: 14; Journal Issue: 18; Journal ID: ISSN 1726-4189
Publisher:
European Geosciences Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Lewin, Keith F., McMahon, Andrew M., Ely, Kim S., Serbin, Shawn P., and Rogers, Alistair. A zero-power warming chamber for investigating plant responses to rising temperature. United States: N. p., 2017. Web. doi:10.5194/bg-14-4071-2017.
Lewin, Keith F., McMahon, Andrew M., Ely, Kim S., Serbin, Shawn P., & Rogers, Alistair. A zero-power warming chamber for investigating plant responses to rising temperature. United States. doi:10.5194/bg-14-4071-2017.
Lewin, Keith F., McMahon, Andrew M., Ely, Kim S., Serbin, Shawn P., and Rogers, Alistair. Tue . "A zero-power warming chamber for investigating plant responses to rising temperature". United States. doi:10.5194/bg-14-4071-2017. https://www.osti.gov/servlets/purl/1392226.
@article{osti_1392226,
title = {A zero-power warming chamber for investigating plant responses to rising temperature},
author = {Lewin, Keith F. and McMahon, Andrew M. and Ely, Kim S. and Serbin, Shawn P. and Rogers, Alistair},
abstractNote = {Advances in understanding and model representation of plant and ecosystem responses to rising temperature have typically required temperature manipulation of research plots, particularly when considering warming scenarios that exceed current climate envelopes. In remote or logistically challenging locations, passive warming using solar radiation is often the only viable approach for temperature manipulation. But, current passive warming approaches are only able to elevate the mean daily air temperature by ~1.5 °C. Motivated by our need to understand temperature acclimation in the Arctic, where warming has been markedly greater than the global average and where future warming is projected to be ~2–3 °C by the middle of the century; we have developed an alternative approach to passive warming. Our zero-power warming (ZPW) chamber requires no electrical power for fully autonomous operation. It uses a novel system of internal and external heat exchangers that allow differential actuation of pistons in coupled cylinders to control chamber venting. This enables the ZPW chamber venting to respond to the difference between the external and internal air temperatures, thereby increasing the potential for warming and eliminating the risk of overheating. During the thaw season on the coastal tundra of northern Alaska our ZPW chamber was able to elevate the mean daily air temperature 2.6 °C above ambient, double the warming achieved by an adjacent passively warmed control chamber that lacked our hydraulic system. We describe the construction, evaluation and performance of our ZPW chamber and discuss the impact of potential artefacts associated with the design and its operation on the Arctic tundra. Our approach is highly flexible and tunable, enabling customization for use in many different environments where significantly greater temperature manipulation than that possible with existing passive warming approaches is desired.},
doi = {10.5194/bg-14-4071-2017},
journal = {Biogeosciences (Online)},
number = 18,
volume = 14,
place = {United States},
year = {2017},
month = {9}
}

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