West African Sahel has become wetter during the last 30 years, but dry spells are shorter and more frequent

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Analysis of the incidence and mortality rate of Alzheimer's and other dementias during the last 30 years in Iran

Introduction: Assessing the course of Alzheimer's disease and other dementias is very important due to lack of a definitive treatment, increase in life expectancy, and aging population. This study aimed to investigate the long-term trend in the incidence and mortality rate of Alzheimer's and other dementias in Iran during 1990-2019. Materials and Methods: Age-Standardized Incidence Rate (ASIR) ...

متن کامل

Bipolar modulation of millennial-scale West African monsoon variability during the last glacial (75,000e25,000 years ago)

Time series of planktonic foraminiferal d18O and Ba/Ca-based sea surface salinity (SSS) estimates from the eastern Gulf of Guinea (eastern equatorial Atlantic) indicate changes in runoff that reflect variability of spatially integrated precipitation over the equatorial West African monsoon area. Millennial-scale and recurring runoff-induced SSS rises and declines in the range of 1.5 and 2 psu (...

متن کامل

Temporal-Spatial Variability of the Severest Dry Spells in the North-West of Iran

The variability of temperature and precipitation is regarded as one of the main characteristics of the climate.Precipitation and its results, especially results such as droughts, vary on different temporal and spatial scales. Thepurpose of this paper is to determine the frequency of the inter-annual variability of the driest month in north-westIran. In order to obtain the best results, we used ...

متن کامل

Pulmonary mucormycosis: the last 30 years.

Pulmonary mucormycosis is relatively uncommon but an important opportunistic fungal infection in immunocompromised persons. The literature on the subject is sparse. We describe a recent case and review the literature to delineate the clinical characteristics of this infection. We searched the MEDLINE database for articles published in the English-language literature since 1970 and carefully ana...

متن کامل

Shorter oars are more effective.

The purpose of this investigation was to clarify the effects of blade design and oar length on performance in rowing. Biomechanical models and equations of motion were developed to identify the main forces that affect rowing performance. In addition, the mechanical connection between the propelling blade force and the force that the rower applies on the handle was established. On this basis it ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Climate Research

سال: 2018

ISSN: 0936-577X,1616-1572

DOI: 10.3354/cr01515