NDLI: The cause analysis on the lowest runoff in the upper reaches of Yellow River from 1990 to 2004

Content Provider	IEEE Xplore Digital Library
Author	Jianying Feng Yaohui Li Chunmei Liao Jinsong Wang
Copyright Year	2011
Description	Author affiliation: Institute of Arid Meteorology, CMA, Lanzhou, 730020, China (Jianying Feng; Yaohui Li; Jinsong Wang) \|\| Northwest China Grid Company Limited, 710001, China (Chunmei Liao)
Abstract	Based on the data of meteorological and hydrological collected from 1961 to 2004, the cause have been analyzed on the lowest runoff in the upper reaches of yellow River in recent years in this paper. The results indicate runoff recorded exhibited slight decrease trend from 1961 to 2004, but there is a notable decrease trend of runoff since 1990. It is noteworthy that low stream continued 15 years from 1990 to 2004, besides 1993 and 1999. Moreover, 9 year amount of runoff anomalous percentage below − 30% among 13 years of the low runoff years, account for 69%, contrast to 6.5% from 1736 to 1998. The paper has discussed the cause of the persistent low flow in the upper reaches of Yellow River in recent years based on the data of general circulation of atmosphere, sea-surface temperature(SST), sensible heat flux over Tibetan Plateau, precipitation, temperature, wind speed, sunshine time, amount of evaporation and maximum depth of frozen ground since 1990. The main cause is showed to be persistent low precipitation since 1990, which may be caused by NAOI maintained positive height phase in winter, East Asian big trough leaning depth, West Pacific Ocean subtropical high pressure ridge line position near southerly, greater sensible heat flux in spring and summer over Tibetan Plateau and stronger geothermal fields that easily result in a kind of typical Northwest drought circulation of 500hPa south positive and north negative, west positive and east negative, weak north wind and strong west wind, and deep East Asian trough and strong Xinjiang ridge in summer in East Asian. Secondarily, the reduction of rainy days above 5 mm and steady rainy days, higher temperature and larger evaporation in spring and summer is disadvantageous to create runoff. The results also indicate that the drought of the surface in the basin resulted in the decreasing trend of the runoff.
Starting Page	811
Ending Page	814
File Size	207018
Page Count	4
File Format	PDF
ISBN	9781457710032
ISSN	21537003
e-ISBN	9781457710056
DOI	10.1109/IGARSS.2011.6049254
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rivers Meteorology Ocean temperature Soil Water resources Springs Land surface temperature cause the upper yellow river lowest runoff
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in