The Modified Palmer Drought Severity Index Based on the NCEP North American Regional Reanalysis
نویسندگان
چکیده
منابع مشابه
Assessing Agricultural Drought in the Anthropocene: A Modified Palmer Drought Severity Index
In the current human-influenced era, drought is initiated by natural and human drivers, and human activities are as integral to drought as meteorological factors. In large irrigated agricultural regions with high levels of human intervention, where the natural farmland soil moisture has usually been changed significantly by high-frequency irrigation, the actual severity of agricultural drought ...
متن کاملA Self-Calibrating Palmer Drought Severity Index
The Palmer Drought Severity Index (PDSI) has been used for more than 30 years to quantify the long-term drought conditions for a given location and time. However, a common critique of the PDSI is that the behavior of the index at various locations is inconsistent, making spatial comparisons of PDSI values difficult, if not meaningless. A self-calibrating Palmer Drought Severity Index (SC-PDSI) ...
متن کاملstochastic simulation of drought severity based on palmer index
drought is a gradual phenomenon and cause important changes in water resources, agriculture and so on. due to the stochastic behavior of factors that influence the occurrence and intense of drought, one can consider this phenomenon as a stochastic process. with respect to the importance of predicted drought severity and its vital influence in designing and operating water resources systems, thi...
متن کاملNcep 25-year North American Regional Reanalysis Shows Significant Improvement from Precipitation Assimilation
The 1993 minus 1988 difference in June plus July total precipitation (mm) from gauge observations (left), North American Regional Reanalysis (NARR) (middle) and Global Reanalysis 1 (right).
متن کاملCharacteristics and trends in various forms of the Palmer Drought Severity Index during 1900–2008
[1] The Palmer Drought Severity Index (PDSI) has been widely used to study aridity changes in modern and past climates. Efforts to address its major problems have led to new variants of the PDSI, such as the self‐calibrating PDSI (sc_PDSI) and PDSI using improved formulations for potential evapotranspiration (PE), such as the Penman‐Monteith equation (PE_pm) instead of the Thornthwaite equation...
متن کاملذخیره 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: Journal of Applied Meteorology and Climatology
سال: 2006
ISSN: 1558-8432,1558-8424
DOI: 10.1175/jam2402.1