Abstract The meridional teleconnection patterns over the western North Pacific and East Asia (WNP–EA) during summer have a predominant role in affecting Asian climate on interannual time scale. A well-known seesaw pattern of tropical–subtropical precipitation is associated with teleconnection, subtropical anomaly has been previously viewed as result anomalous circulations teleconnection. In this study, however, authors suggest that anomalies, turn, can significantly affect large-scale may be...

Abstract Rainfall in North West Australia (NWA) has been increasing over the past decades, occurring mainly austral summer season (December–March). A range of factors such as decreased land albedo and anthropogenic aerosols Northern Hemisphere, identified using simulations from climate models, have implicated this wetting trend. However, impact on Australian rainfall remains unclear. In addition, previous studies showed that dominant sea surface temperature (SST) signals Pacific–Indian Ocean...

The East Asian westerly jet (EAJ) plays a crucial role in affecting the summer rainfall (EASR). Therefore, evaluations of EAJ simulations are vital for improving understanding and projections climate change Asia. This study evaluates climatology interannual variability present-day CMIP6 models compares results with those CMIP5 by analyzing historical 29 21 during period from 1986–2005. In general, capture more realistically than models. show that reasonably spatial features climatological...

Abstract Fire is an important Earth system process and the largest source of global primary carbonaceous aerosols. Earlier studies have focused on influence fire aerosols radiation, surface climate, air quality, biogeochemical cycle. The impact water cycle has not been quantified related mechanisms remain largely unclear. This study provides first quantitative assessment understanding done by quantifying difference between simulations with without using coupled Community System Model (CESM)....

In this study we document the abrupt seasonal migration of East Asian upper-tropospheric jet stream (EAJS) in boreal mid-summer over coast, based on NCEP/NCAR reanalysis data from 1958 to 2002. climatology, an northward jump EAJS is identified late July. By examining each total 45 years there are 27 which exhibits mid-summer, and about half cases occur July, suggesting characteristic phase locking with calendar year. A cluster analysis meridional variation zonal wind anomalies along eastern...

Abstract Previous studies have shown that during summer there is a meridional teleconnection over the western North Pacific and East Asia (WNP‐EA) on interannual time scales. This characterized by zonally elongated circulation anomalies with alternate signs in direction this region. The present study indicates significant change early‐summer around late 1970s, using ERA‐40 reanalysis data 1958–2001. Although appears as dominant mode whole analysis period, close inspection revealed becomes...

Extratropical teleconnections significantly affect the climate in subtropical and mid-latitude regions. Understanding variability of atmospheric teleconnection Southern Hemisphere, however, is still limited contrast with well-documented counterpart Northern Hemisphere. This study investigates interannual circulation Hemisphere austral summer based on ERA-Interim reanalysis dataset during 1980–2016. A stationary revealed along strong westerly jet over South Atlantic Indian Ocean (SAIO). The...

Abstract Previous studies have found a link between north China and Indian rainfall during summer, with significantly increased in related to stronger summer monsoon. This is weakened after the late 1970s, generally attributed reduced magnitude of interannual variability rainfall. study reveals similar change this early 1970s. Related heavier rainfall, enhances before 1970s but not thereafter. The teleconnection caused by impact on midlatitude wave train along Asian jet upper troposphere....

This study reveals a significant relationship, on the interannual timescale, between dipole mode, second leading of spring sea-ice anomalies in Barents Sea and following-summer rainfall East Asia. Related to with heavier sea ice north lighter southeast spring, Asian summer subtropical rainy belt tends move northward. The relationship is established through wave train over northern Eurasia lower troposphere June. enhances low, which induces more then attracts suggests that mode may be good...

We start with an analysis of the abruptly enhanced convection over subtropical western North Pacific (WNP) around late July, so called “convection jump,” and indicate that intraseasonal oscillations (ISOs) play a dominant role in this feature. Then, we analyze extratropical circulation anomalies association ISOs WNP, which are more common than jump thus provide greater sample size. It is found prior to ISO peaks, well‐defined wave train alternating cyclonic anticyclonic perturbations appears...

   Fire is the primary form of terrestrial ecosystem disturbance globally and a critical Earth system process. So far, most models (ESMs) have incorporated fire modeling, with 19 out them submitted simulations to CMIP6. Transitioning from CMIP5 CMIP6, much more dominant scheme has evolved GlobFIRM Li scheme. However, it remains unknown how well CMIP6 ESMs perform in simulations. This study provides first comprehensive evaluation simulations, through comparisons multiple...