A zero-power warming chamber for investigating plant responses to rising temperature
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 l...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-14-4071-2017 https://www.biogeosciences.net/14/4071/2017/ |
id |
ftcopernicus:oai:publications.copernicus.org:bg59218 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:bg59218 2023-05-15T15:00:36+02:00 A zero-power warming chamber for investigating plant responses to rising temperature Lewin, Keith F. McMahon, Andrew M. Ely, Kim S. Serbin, Shawn P. Rogers, Alistair 2018-09-27 application/pdf https://doi.org/10.5194/bg-14-4071-2017 https://www.biogeosciences.net/14/4071/2017/ eng eng doi:10.5194/bg-14-4071-2017 https://www.biogeosciences.net/14/4071/2017/ eISSN: 1726-4189 Text 2018 ftcopernicus https://doi.org/10.5194/bg-14-4071-2017 2019-12-24T09:51:02Z 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. However, 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. The approach we describe 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. Text Arctic Tundra Alaska Copernicus Publications: E-Journals Arctic Biogeosciences 14 18 4071 4083 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
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. However, 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. The approach we describe 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. |
format |
Text |
author |
Lewin, Keith F. McMahon, Andrew M. Ely, Kim S. Serbin, Shawn P. Rogers, Alistair |
spellingShingle |
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 |
author_facet |
Lewin, Keith F. McMahon, Andrew M. Ely, Kim S. Serbin, Shawn P. Rogers, Alistair |
author_sort |
Lewin, Keith F. |
title |
A zero-power warming chamber for investigating plant responses to rising temperature |
title_short |
A zero-power warming chamber for investigating plant responses to rising temperature |
title_full |
A zero-power warming chamber for investigating plant responses to rising temperature |
title_fullStr |
A zero-power warming chamber for investigating plant responses to rising temperature |
title_full_unstemmed |
A zero-power warming chamber for investigating plant responses to rising temperature |
title_sort |
zero-power warming chamber for investigating plant responses to rising temperature |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-14-4071-2017 https://www.biogeosciences.net/14/4071/2017/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra Alaska |
genre_facet |
Arctic Tundra Alaska |
op_source |
eISSN: 1726-4189 |
op_relation |
doi:10.5194/bg-14-4071-2017 https://www.biogeosciences.net/14/4071/2017/ |
op_doi |
https://doi.org/10.5194/bg-14-4071-2017 |
container_title |
Biogeosciences |
container_volume |
14 |
container_issue |
18 |
container_start_page |
4071 |
op_container_end_page |
4083 |
_version_ |
1766332678820331520 |