Journal of Geophysical Research D: Atmospheres

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Sulfate Aerosol in the Arctic: Source Attribution and Radiative Forcing
Journal of Geophysical Research D: Atmospheres - Tập 123 Số 3 - Trang 1899-1918 - 2018
Yang Yang, Hailong Wang, Steven J. Smith, R. C. Easter, Philip J. Rasch
AbstractSource attribution of Arctic sulfate and its radiative forcing due to aerosol‐radiation interactions (RFari) for 2010–2014 are quantified in this study using the Community Earth System Model equipped with an explicit sulfur source‐tagging technique. The model roughly reproduces the seasonal pattern of sulfate but has biases in simulating the magnitude of ne...... hiện toàn bộ
An efficient hybrid method for estimating clear‐sky surface downward longwave radiation from MODIS data
Journal of Geophysical Research D: Atmospheres - Tập 122 Số 5 - Trang 2616-2630 - 2017
Jie Cheng, Shunlin Liang, Wenhui Wang, Yamin Guo
AbstractThis paper proposes an efficient hybrid method for estimating 1 km instantaneous clear‐sky surface downward longwave radiation (LWDN) from Moderate Resolution Imaging Spectroradiometer (MODIS) thermal infrared observations and the MODIS near‐infrared column water vapor (CWV) data product. The LWDN was formulated as a nonlinear function of surface upwelling ...... hiện toàn bộ
Role of inertial instability in the West African monsoon jump
Journal of Geophysical Research D: Atmospheres - Tập 120 Số 8 - Trang 3085-3102 - 2015
Kerry H. Cook
AbstractThe West African monsoon jump is a sudden shift in the latitude of the West African precipitation maximum from the Guinean coast near 4°N into Sahel near 12°N in late June or early July. An examination of reanalyses and observations indicates that the Sahel rainy season develops smoothly and the monsoon jump occurs because of an abrupt decrease in Guinean c...... hiện toàn bộ
Introduction to Special Collection: “Bridging Weather and Climate: Subseasonal‐to‐Seasonal (S2S) Prediction”
Journal of Geophysical Research D: Atmospheres - Tập 125 Số 4 - 2020
Alex Lang, Kathy Pegion, Elizabeth A. Barnes
AbstractThis article acts as an introduction to the JGR‐Atmospheres Special Section titled “Bridging Weather and Climate: Subseasonal‐to‐Seasonal (S2S) Prediction”. It outlines the major findings of the articles published in the Special Section as well as discusses organized national and international efforts to advance subseasonal‐to‐seasonal prediction research.<...
In situ observations of black carbon in snow and the corresponding spectral surface albedo reduction
Journal of Geophysical Research D: Atmospheres - Tập 120 Số 4 - Trang 1476-1489 - 2015
Christina A. Pedersen, Jean‐Charles Gallet, J. Ström, Sebastian Gerland, Stephen R. Hudson, Sanja Forsström, Elisabeth Isaksson, Terje K. Berntsen
AbstractBlack carbon (BC) particles emitted from incomplete combustion of fossil fuel and biomass and deposited on snow and ice darken the surface and reduce the surface albedo. Even small initial surface albedo reductions may have larger adjusted effects due to snow morphology changes and changes in the sublimation and snow melt rate. Most of the literature on the...... hiện toàn bộ
Characteristics and Sources of Hourly Trace Elements in Airborne Fine Particles in Urban Beijing, China
Journal of Geophysical Research D: Atmospheres - Tập 124 Số 21 - Trang 11595-11613 - 2019
Yang Cui, Dongsheng Ji, Hui Chen, Meng Gao, Willy Maenhaut, Jun He, Yuesi Wang
AbstractTo better investigate the characteristics and sources of trace elements (TEs) in PM2.5 in urban Beijing, a 1‐year hourly observation was continuously made using an online multi‐element analyzer from 1 June 2016 to 31 May 2017. The average concentrations of 14 individual TEs ranged from 1.1 (V) to 900 ng/m3 (K). The ...... hiện toàn bộ
Comparing the diurnal and seasonal variabilities of atmospheric and surface urban heat islands based on the Beijing urban meteorological network
Journal of Geophysical Research D: Atmospheres - Tập 122 Số 4 - Trang 2131-2154 - 2017
Kaicun Wang, Shaojing Jiang, Jiankai Wang, Chunlüe Zhou, Xiaoyan Wang, Xuhui Lee
AbstractThis study compared the diurnal and seasonal cycles of atmospheric and surface urban heat islands (UHIs) based on hourly air temperatures (Ta) collected at 65 out of 262 stations in Beijing and land surface temperature (Ts) derived from Moderate Resolution Imagin...... hiện toàn bộ
The South American Low‐Level Jet: A New Climatology, Variability, and Changes
Journal of Geophysical Research D: Atmospheres - Tập 124 Số 3 - Trang 1200-1218 - 2019
T. Montini, Charles Jones, Leila M. V. Carvalho
AbstractThe South American low‐level jet (SALLJ) east of the Andes plays an important role in regional weather and hydrology by transporting large amounts of moisture from the Amazon to the subtropics. A new methodology is introduced for detecting SALLJ events based on seasonal‐percentile thresholds of wind speed and wind shear. Direct comparisons are made between ...... hiện toàn bộ
The Victoria mode in the North Pacific linking extratropical sea level pressure variations to ENSO
Journal of Geophysical Research D: Atmospheres - Tập 120 Số 1 - Trang 27-45 - 2015
Ruiqiang Ding, Jianping Li, Yu‐Heng Tseng, Cheng Sun, Yipeng Guo
AbstractThe Victoria mode (VM) represents the second dominant mode (empirical orthogonal function, EOF2) of North Pacific variability, independent of the Pacific Decadal Oscillation and is defined as the EOF2 of SST anomalies in the North Pacific poleward of 20°N. The present study indicates that the VM is closely linked to the development of El Niño–Southern Oscil...... hiện toàn bộ
Lửa hoạt động từ bộ cảm biến hồng ngoại tầm nhìn của Suomi NPP: Tình trạng sản phẩm và kết quả đánh giá ban đầu Dịch bởi AI
Journal of Geophysical Research D: Atmospheres - Tập 119 Số 2 - Trang 803-816 - 2014
Ivan Csiszar, William C. Schroeder, Louis Giglio, Evan Ellicott, Krishna Prasad Vadrevu, Christopher O. Justice, Brad Wind
Tóm tắtBộ cảm biến Hồng ngoại tầm nhìn (VIIRS) trên vệ tinh Suomi Quốc gia đối lưu Bắc Cực (S-NPP) tích hợp các kênh nhạy cảm với lửa, bao gồm một kênh 4 µm có nhiệt độ bão hòa cao và đa dạng, cho phép phát hiện và đặc trưng hóa lửa hoạt động. Sản phẩm lửa hoạt động, dựa trên các băng tần “M” có độ phân giải trung bình 750 m của VIIRS, là một trong những sản phẩm h...... hiện toàn bộ
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