Characteristics of black carbon, primary and secondary Brown carbon in different regions of Qinghai Xizang Plateau (2018-2020)

The Qinghai Tibet Plateau is surrounded by regions with high global carbon aerosol emissions, and the surrounding black carbon and brown carbon can be transmitted to the plateau. Light absorbing black carbon and brown carbon have warming effect, and their settlement on the surface of ice and snow will also accelerate the melting of glaciers and snow. At present, there is little research on brown carbon in this area, and the research on the correlation between brown carbon components and optics is in its infancy. Therefore, the study of Atmospheric Black Carbon and brown carbon in the Qinghai Tibet Plateau has important climate and environmental significance. The aerosol optical absorption characteristics of Atmospheric Black Carbon and brown carbon were obtained by observing in different regions of the Qinghai Tibet Plateau. It reveals the spatial differences of optical absorption of black carbon, primary Brown carbon and secondary Brown carbon aerosols in different regions of the Qinghai Tibet Plateau.

0 2021-11-16

On line observation data set of Hengduanshan mountain gorge area

The data set is from Gaomeigu area in Lijiang, Yunnan Province. The longitude, latitude and altitude of Gaomeigu area are 100 E ° 01 ′ 51 ″, 26 n ° 42 ′ 32 ″, altitude 3200m. The data set includes: 1. Continuous observation of the mass concentration of fusible chemical components in the atmosphere, including organic matter, nitrate, sulfate, chloride and ammonia. The measurement instrument is the aerosol chemical composition on-line monitor (ACSM). The observation period is from 00:29 on March 13, 2018 to 01:27 on April 7, 2018, and the time resolution is 30 minutes. The intermediate instrument runs well, and the data is missing occasionally. The data file contains the mass concentration data of each component measured by the instrument. 2. Continuously observe the mass concentration of black carbon in the atmosphere. The measuring instrument is aethalometer ae33 black carbon instrument produced by Magee company. The observation period is from 00:00 on March 14, 2018 to 23:59 on May 13, 2018, and the time resolution is 1 minute. The whole observation instrument works well, and the data is missing occasionally. The data file contains the information of the instrument, the measured mass concentration data of black carbon and various parameters of the instrument, including temperature, pressure, flow rate, etc. 3. Continuously observe the mass concentration of nitric oxide and nitrogen oxides in the atmosphere. The measuring instrument is the NOx analyzer produced by Thermo Fisher company. The observation period is from 00:00 on April 10, 2018 to 23:59 on May 13, 2018, and the time resolution is 1 minute. The whole observation instrument works well, and the data is missing occasionally. The data file contains the mass concentration data of NOx and no gas measured by the instrument. 4. Continuously observe the mass concentration of ozone in the atmosphere. The measuring instrument is the 49i ozone analyzer produced by Thermo Fisher company. The observation period is from 00:00 on March 15, 2018 to 23:59 on May 13, 2018, and the time resolution is 1 minute. The whole observation instrument works well, and the data is missing occasionally. The data file contains the mass concentration data of ozone gas measured by the instrument. 5. Continuously observe the mass concentration of sulfur dioxide in the atmosphere. The measuring instrument is sulfur dioxide analyzer produced by Thermo Fisher company. The observation period is from 00:00 on March 15, 2018 to 23:59 on May 13, 2018, and the time resolution is 1 minute. The whole observation instrument works well, and the data is missing occasionally. The data file contains the mass concentration data of sulfur dioxide gas measured by the instrument. Supported project: the second comprehensive scientific expedition to the Qinghai Tibet Plateau 2019qzk0602.

0 2021-06-03

Dataset of black carbon concentration at Mt. Everest Station from May 2015 to May 2017

Black carbon(BC) is a carbonaceous aerosol that mainly emitted from the incomplete combustion of fossil fuels or biomass. As fine particles in the atmosphere with light-absorbing characteristic, BC can significantly reduce the surface albedo when deposits on snow and ice and accelerate the melting of glaciers and snow cover. New Aethalometer model AE-33 acquires the real-time BC concentration according to the light absorption and attenuation characteristics from the different wavelengths. In addition, AE-33 uses dual-spot measurements, which can compensate for the “spot loading effect” and obtain high-quality BC concentrations. By using the real-time observation data measured by AE-33 at Mt. Everest Station, we analyzed the seasonal and diurnal variations of BC and its sources and transport processes, and we also investigated the transport mechanisms of serious polluted episodes. That can provide basis for future works on assessment of climate effects caused by BC in this region.

0 2020-08-15

Observational data of atmospheric black carbon content in the Tibetan plateau at five stations (2019)

As the "water tower" of Asia, the Qinghai Tibet Plateau provides water resources for the main rivers in Asia. BC aerosol emitted from biomass and fossil fuel combustion has a strong absorption effect on radiation, and has an important impact on the energy budget and distribution of the earth system. It is an important influence factor of climate and environmental change. The black carbon aerosols emitted from the surrounding areas of the Qinghai Tibet Plateau can be transported to the interior of the plateau through the atmospheric circulation, and settle on the surface of snow and ice, which has an important impact on precipitation and glacier mass balance. Black carbon meters were set up at five stations on the Qinghai Tibet Plateau, and aethalometer was used to measure the black carbon content in the atmosphere online. The time resolution of the data was day by day. This data is an update of the previously released "observational data of black carbon content in the atmosphere of the Qinghai Tibet Plateau (2018)". The information of the five sites is as follows: Namco: 30 ° 46'N, 90 ° 59'e, 4730 ma.s.l Mt. Everest: 28.21 ° n, 86.56 ° e, 4276 ma. S.l Southeast Tibet: 29 ° 46'N, 94 ° 44'e, 3230 ma.s.l Ali station: 33.39 ° n, 79.70 ° e, 4270 ma. S.l Mostag: 38 ° 24'n, 75 ° 02'e, 3650 ma.s.l

0 2020-07-29