Evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer
<p>An evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer named CW193 was performed in this study. The instrument has a highly integrated design, smart control performance and is composed of three parts (the optical head, robotic dri...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2022-04-01
|
| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/15/2139/2022/amt-15-2139-2022.pdf |
| _version_ | 1818395320776654848 |
|---|---|
| author | Y. Zheng H. Che Y. Wang X. Xia X. Hu X. Zhang J. Zhu J. Zhu H. Zhao L. Li K. Gui X. Zhang |
| author_facet | Y. Zheng H. Che Y. Wang X. Xia X. Hu X. Zhang J. Zhu J. Zhu H. Zhao L. Li K. Gui X. Zhang |
| author_sort | Y. Zheng |
| collection | DOAJ |
| description | <p>An evaluation of aerosol microphysical, optical and
radiative properties measured with a multiwavelength photometer named
CW193 was performed in this study. The instrument has a highly integrated
design, smart control performance and is composed of three parts (the optical
head, robotic drive platform and stents system). Based on synchronous
measurements, the CW193 products were validated using reference data from the
AERONET CE318 photometer. The results show that the raw digital counts from
CW193 agree well with the counts from AERONET (<span class="inline-formula"><i>R</i>>0.989</span>), with daily
average triplets of around 1.2 % to 3.0 % for the ultraviolet
band and less than 2.0 % for the visible and infrared bands. Good
aerosol optical depth agreement (<span class="inline-formula"><i>R</i>>0.997</span>, 100 % within
expected error) and root mean square error (RMSE) values ranging from 0.006
(for the 870 nm band) to 0.016 (for the 440 nm band) were obtained, with the
relative mean bias (RMB) ranging from 0.922 to 1.112 and the aerosol optical
depth bias within <span class="inline-formula">±0.04</span>. The maximum deviation of the peak value for
fine-mode particles varied from about 8.9 % to 77.6 %, whereas the
variation for coarse-mode particles was about 13.1 % to 29.1 %. The deviation variations of the single scattering albedo were
approximately 0.1 %–1.8 %, 0.6 %–1.9 %, 0.1 %–2.6 % and 0.8 %–3.5 %
for the 440, 675, 870 and 1020 nm bands, respectively. For the
aerosol direct radiative forcing, deviations of approximately 4.8 %–12.3 %
were obtained at the earth's surface and 5.4 %–15.9 % for the top of the
atmosphere. In addition, the water vapor retrievals showed satisfactory
accuracy, characterized by a high <span class="inline-formula"><i>R</i></span> value (<span class="inline-formula">∼0.997</span>), a small
RMSE (<span class="inline-formula">∼0.020</span>) and a good expected error distribution (100 % within expected error). The water
vapor RMB was about 0.979, and the biases mostly varied within <span class="inline-formula">±0.04</span>,
whereas the mean values were concentrated within <span class="inline-formula">±0.02</span>.</p> |
| first_indexed | 2024-12-14T06:15:14Z |
| format | Article |
| id | doaj.art-5465dd42f9b24b95b448eef23d38ced5 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-14T06:15:14Z |
| publishDate | 2022-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-5465dd42f9b24b95b448eef23d38ced52022-12-21T23:14:03ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482022-04-01152139215810.5194/amt-15-2139-2022Evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometerY. Zheng0H. Che1Y. Wang2X. Xia3X. Hu4X. Zhang5J. Zhu6J. Zhu7H. Zhao8L. Li9K. Gui10X. Zhang11State Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, 100081, ChinaState Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, 100081, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, ChinaLAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, ChinaNational Satellite Meteorological Center, China Meteorological Administration, Beijing, 100081, ChinaCentre for Atmosphere Watch and Services, Meteorological Observation Centre, China Meteorological Administration, Beijing, 100081, ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, ChinaState Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, 100081, ChinaInstitute of Atmospheric Environment, China Meteorological Administration, Shenyang 110166, ChinaState Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, 100081, ChinaState Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, 100081, ChinaState Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, 100081, China<p>An evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer named CW193 was performed in this study. The instrument has a highly integrated design, smart control performance and is composed of three parts (the optical head, robotic drive platform and stents system). Based on synchronous measurements, the CW193 products were validated using reference data from the AERONET CE318 photometer. The results show that the raw digital counts from CW193 agree well with the counts from AERONET (<span class="inline-formula"><i>R</i>>0.989</span>), with daily average triplets of around 1.2 % to 3.0 % for the ultraviolet band and less than 2.0 % for the visible and infrared bands. Good aerosol optical depth agreement (<span class="inline-formula"><i>R</i>>0.997</span>, 100 % within expected error) and root mean square error (RMSE) values ranging from 0.006 (for the 870 nm band) to 0.016 (for the 440 nm band) were obtained, with the relative mean bias (RMB) ranging from 0.922 to 1.112 and the aerosol optical depth bias within <span class="inline-formula">±0.04</span>. The maximum deviation of the peak value for fine-mode particles varied from about 8.9 % to 77.6 %, whereas the variation for coarse-mode particles was about 13.1 % to 29.1 %. The deviation variations of the single scattering albedo were approximately 0.1 %–1.8 %, 0.6 %–1.9 %, 0.1 %–2.6 % and 0.8 %–3.5 % for the 440, 675, 870 and 1020 nm bands, respectively. For the aerosol direct radiative forcing, deviations of approximately 4.8 %–12.3 % were obtained at the earth's surface and 5.4 %–15.9 % for the top of the atmosphere. In addition, the water vapor retrievals showed satisfactory accuracy, characterized by a high <span class="inline-formula"><i>R</i></span> value (<span class="inline-formula">∼0.997</span>), a small RMSE (<span class="inline-formula">∼0.020</span>) and a good expected error distribution (100 % within expected error). The water vapor RMB was about 0.979, and the biases mostly varied within <span class="inline-formula">±0.04</span>, whereas the mean values were concentrated within <span class="inline-formula">±0.02</span>.</p>https://amt.copernicus.org/articles/15/2139/2022/amt-15-2139-2022.pdf |
| spellingShingle | Y. Zheng H. Che Y. Wang X. Xia X. Hu X. Zhang J. Zhu J. Zhu H. Zhao L. Li K. Gui X. Zhang Evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer Atmospheric Measurement Techniques |
| title | Evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer |
| title_full | Evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer |
| title_fullStr | Evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer |
| title_full_unstemmed | Evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer |
| title_short | Evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer |
| title_sort | evaluation of aerosol microphysical optical and radiative properties measured with a multiwavelength photometer |
| url | https://amt.copernicus.org/articles/15/2139/2022/amt-15-2139-2022.pdf |
| work_keys_str_mv | AT yzheng evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT hche evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT ywang evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT xxia evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT xhu evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT xzhang evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT jzhu evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT jzhu evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT hzhao evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT lli evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT kgui evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer AT xzhang evaluationofaerosolmicrophysicalopticalandradiativepropertiesmeasuredwithamultiwavelengthphotometer |