DCMEX (Deep Convective Microphysics Experiment): in-situ airborne observations by the UK FAAM BAE-146 aircraft

Airborne atmospheric measurements were conducted aboard the UK FAAM (Facility for Airborne Atmospheric Measurements) BAE-146 aircraft as part of the DCMEX project (Deep Convective Microphysics Experiment, July to August, 2022). The DCMEX campaign provided coordinated and comprehensive observations of aerosols, cloud microphysics, and thermodynamics of the deep convective system over the Magdalena Mountains, New Mexico. Associated datasets are also available at: Facility for Airborne Atmospheric Measurements; Finney, D.; Blyth, A.; Gallagher, M.; Wu, H.; Nott, G.J.; Biggerstaff, M.; Sonnenfeld, R.G.; Daily, M.; Walker, D.; Dufton, D.; Bower, K.N.; Boeing, S.; Choularton, T.W.; Crosier, J.; Groves, J.; Field, P.; Coe, H.; Murray, B.J.; Lloyd, G.; Marsden, N.A.; Flynn, M.; Hu, K.; Thamban, N.M.; Williams, P.I.; Connolly, P.J.; McQuaid, J.B.; Robinson, J.; Cui, Z.; Burton, R.R.; Carrie, G.; Moore, R.; Abel, S.J.; Tiddeman, D.; Aulich, G.; Bennecke, D.; Kelsey, V.; Reger, R.S.; Nowakowska, K.; Bassford, J.; Morris, F.; Hampton, J. (2022): DCMEX: Collection of in-situ airborne observations, ground-based meteorological and aerosol measurements and cloud imagery for the Deep Convective Microphysics Experiment. NERC EDS Centre for Environmental Data Analysis, 30 April 2024. doi:10.5285/B1211AD185E24B488D41DD98F957506C. https://dx.doi.org/10.5285/B1211AD185E24B488D41DD98F957506C This dataset consists of several measurement outputs, categorized as follows: "core_faam_CLARIFY.zip": includes measurements from the core instrument suite for each scientific flight. These instruments measure key atmospheric dynamics and thermodynamic variables, such as wind speed and direction, temperature (T), and humidity. "core-cloud-phy_faam_CLARIFY.zip": includes measurements from a wing-mounted Passive Cavity Aerosol Spectrometer Probe (PCASP) and a Cloud Droplet Probe (CDP) for each scientific flight. The PCASP resolved number concentrations at 5-Hz resolution, across 30 diameter bins between 0.1 and 3 µm. The CDP measures cloud droplet particles at 25-Hz resolution, and in 30 bins over a nominal size range of 2–50 µm. "smps_man_CLARIFY.zip": includes measurements of aerosol number size distributions from a Scanning Mobility Particle Sizer (SMPS). The SMPS connects a low-pressure water-based condensation particle counter (WCPC model 3786-LP) to a TSI 3081 differential mobility analyser (DMA). It provides aerosol size distribution within the mobility diameter range of 20 to 350 nm, across 40 logarithmically spaced bins. "AMS_man_CLARIFY.zip": includes measurements from a compact time-of-flight aerosol mass spectrometer (C-ToF-AMS, Aerodyne Research Inc.) for each scientific flight, which measures mass concentrations of organic, sulfate, nitrate, and ammonium. "SP2_man_CLARIFY.zip": includes measurements from the Single Particle Soot Photometer (SP2) for each scientific flight, which measures black carbon content in individual airborne aerosol particles. The SP2 can measure the refractory black carbon (hereafter referred to as BC) containing particles with an equivalent spherical diameter in the range of 70–850 nm. "dropsonde_faam_DCMEX.zip": includes measurements from the Vaisala Dropsonde RD93, which is a general-purpose dropsonde for high-altitude deployment from a variety of aircraft. Slowed in its descent through the atmosphere by a special parachute, the RD93 measures the atmospheric profiles of pressure, temperature, relative humidity, and wind from the point of launch to the ground.本研究依托DCMEX项目（深对流微物理实验，2022年7月至8月），搭载英国FAAM（Facility for Airborne Atmospheric Measurements）BAE-146型飞机开展了机载大气观测。DCMEX观测计划对美国新墨西哥州马格达莱纳山脉上空的深对流系统的气溶胶、云微物理特性及热力学状态开展了协同且全面的观测。 相关数据集可获取于：FAAM；Finney, D.、Blyth, A.、Gallagher, M.、Wu, H.、Nott, G.J.、Biggerstaff, M.、Sonnenfeld, R.G.、Daily, M.、Walker, D.、Dufton, D.、Bower, K.N.、Boeing, S.、Choularton, T.W.、Crosier, J.、Groves, J.、Field, P.、Coe, H.、Murray, B.J.、Lloyd, G.、Marsden, N.A.、Flynn, M.、Hu, K.、Thamban, N.M.、Williams, P.I.、Connolly, P.J.、McQuaid, J.B.、Robinson, J.、Cui, Z.、Burton, R.R.、Carrie, G.、Moore, R.、Abel, S.J.、Tiddeman, D.、Aulich, G.、Bennecke, D.、Kelsey, V.、Reger, R.S.、Nowakowska, K.、Bassford, J.、Morris, F.、Hampton, J.（2022）：DCMEX：深对流微物理实验原位机载观测、地面气象与气溶胶测量及云影像数据集。NERC EDS环境数据分析中心，2024年4月30日。DOI: 10.5285/B1211AD185E24B488D41DD98F957506C，获取链接：https://dx.doi.org/10.5285/B1211AD185E24B488D41DD98F957506C 本数据集包含多类测量输出，分类如下： "core_faam_CLARIFY.zip"：包含各科研飞行任务的核心仪器套件测量数据。该套件可获取关键大气动力学与热力学变量，包括风速、风向、气温（T）及湿度。 "core-cloud-phy_faam_CLARIFY.zip"：包含各科研飞行任务中翼载被动腔气溶胶光谱仪探头（Passive Cavity Aerosol Spectrometer Probe，PCASP）与云滴探头（Cloud Droplet Probe，CDP）的测量数据。其中PCASP以5Hz的采样分辨率，对0.1~3μm粒径范围内的30个粒径通道内的气溶胶数浓度进行解析；CDP以25Hz的采样分辨率，对2~50μm标称粒径范围内的30个通道内的云滴粒子进行测量。 "smps_man_CLARIFY.zip"：包含扫描迁移率粒径谱仪（Scanning Mobility Particle Sizer，SMPS）测得的气溶胶数粒径分布数据。该SMPS将低压水基冷凝粒子计数器（WCPC 3786-LP型）与TSI 3081型差分迁移率分析仪（DMA）相连，可获取20~350nm迁移粒径范围内、40个对数间隔通道内的气溶胶粒径分布。 "AMS_man_CLARIFY.zip"：包含各科研飞行任务中紧凑型飞行时间气溶胶质谱仪（compact time-of-flight aerosol mass spectrometer，C-ToF-AMS，Aerodyne Research Inc.）的测量数据，可测得有机物质、硫酸盐、硝酸盐及铵盐的质量浓度。 "SP2_man_CLARIFY.zip"：包含各科研飞行任务中单粒子炭黑光度计（Single Particle Soot Photometer，SP2）的测量数据，可对单个机载气溶胶粒子的炭黑含量进行测定。该SP2可测量等效球粒径介于70~850nm的难熔炭黑（下文简称BC）粒子。 "dropsonde_faam_DCMEX.zip"：包含Vaisala RD93型探空仪的测量数据，该探空仪为通用型探空装置，可由多种航空器在高空投放。RD93通过专用降落伞减速下降，可测量从投放点至地面的大气压强、气温、相对湿度及风速廓线。