2 edition of Potential evapotranspiration and climate in Alaska by Thornthwaite"s classification found in the catalog.
Potential evapotranspiration and climate in Alaska by Thornthwaite"s classification
James H. Patric
by Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture in Juneau, Alaska
Written in English
|Statement||by James H. Patric and Peter E. Black.|
|Series||USDA Forest Service research paper PNW ;, 71|
|Contributions||Black, Peter E., joint author.|
|LC Classifications||SD11 .A45614 no. 71|
|The Physical Object|
|Number of Pages||28|
|LC Control Number||74602235|
Summary: Time series of monthly minimum and maximum temperature, precipitation, and potential evapotranspiration were derived for 1, watersheds in the conterminous United States for which stream flow measurements were also available from the national streamflow database, termed the Hydro-Climatic Data Network (HCDN), developed by Slack et al. (a,b). Remotely sensed land surface temperature- (LST-) dependent evapotranspiration (ET) models and vegetation index- (VI-) LST methods may not be suitable for ET estimation in energy-limited cold areas. In this study, the relationship of ET to LST was simulated using the process-based Simultaneous Heat and Water (SHAW) model for energy- and water-limited conditions in Mongolia, to understand the.
Evapotranspiration in North America: implications for water resources in a changing climate Yang Qu1,2 & Qianlai Zhuang1,3 Received: 24 January /Accepted: 25 April / # Springer Nature B.V. Abstract Accurate quantification of evapotranspiration (ET) . In response to this challenge, the National Water Census has developed methods to use remote sensing as a method of estimating ET. USGS EROS has produced evapotranspiration estimates using satellite land surface temperature imagery using the Simplified Surface Energy Balance (SSEB) described in Senay et al. (), Senay et al., (), and Senay et al. ().
GOSAT CH4 and CO2, MODIS Evapotranspiration on the Northern Hemisphere June and July , , and Poster presented by Reginald R. Muskett at the American Geophysical Union Fall Meeting. Read more about GOSAT CH4 and CO2, MODIS Evapotranspiration on the Northern Hemisphere June and July , , and Köppen climate classification is one of the most widely used climate classification was first published by Russian German climatologist Wladimir Köppen in , with several later modifications by Köppen himself, notably in and Later, German climatologist Rudolf Geiger collaborated with Köppen on changes to the classification system, which is thus sometimes referred.
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Potential evapotranspiration and climate in Alaska by Thornthwaite's classification. Juneau, Alaska, Pacific Northwest Forest and Range Experiment Station, U.S.
Dept. of Agriculture, (OCoLC) Potential evapotranspiration and climate in Alaska by Thornthwaite's classification. Juneau, Alaska, Pacific Northwest Forest and Range Experiment.
As Thornthwaite () pointed out, wet and dry climates are determined neither by total nor seasonal precipitation but by the relation of precipitation to the evaporative demand.
For example, precipitation amounts are nearly equal in California's Mojave Desert and in Alaska's forested and frequently boggy interior.
In addition to estimates of potential and actual evapotranspiration, Thornthwaite ' s method provides estimates of streamflow and a quantitative method for the classifica- tion of climates. Only a few comparisons of, estimated with measured PET are known for Alaska and northwestern Canada.
Patric, J.H. and P.E. Black. Potential evapotranspiration and climate in Alaska by Thorn thwaite’s classification. USD A Forest Service Research Paper PNW Pacific Northwest Forest and Range Experiment Station, Portland, OR.
28 pp. Google ScholarCited by: A Revised Thornthwaite-Type Global Climate Classification Article (PDF Available) in Physical Geography 26(6) November w Reads How we measure 'reads'. Thornthwaite’s second classification is based on two variables: 1. Potential Evapotranspiration (PE) 2.
Precipitation. The Potential Evapotranspiration is expressed as the amount of moisture that will be transferred to atmosphere by evaporation of solid and liquid water and by transpiration from living tissues, principally plants. Potential evapotranspiration (ET p) and reference crop evapotranspiration (ET o) differ in their developments, concepts, equations and application fields, however, many researchers have mixed the utilization of the twoit is necessary to clarify the terms to guide their proper usage.
The aim of this study is to provide a comprehensive review of the concepts, developments, equations. Climate classification is an effort to recognize, clarify, and simplify climatic similarities and difference between geographic areas in order to enhance the scientific understanding of climates.
The Alaska vegetation classification. Gen. Tech. Rep. PNW-GTR Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station.
The Alaska vegetation classification presented here is a comprehensive, statewide system that has been under development since The classification is based. Thornthwaite's () empirical method of estimating potential evapotranspiration (PE) has been preferred by several scientists in India to Penman's () theoretical combination approach, because of the former's simplicity.
However, in view of the doubts expressed in various quarters regarding the applicability of Thornthwaite's method for monsoon climates, a comparison is made of the. Based on potential evapotranspiration (potential ET or PET), which approximates use of water by climate classification based on monthly and annual averages of temperature and precipitation; boundaries between climate classes are designed so that climate types coincide with vegetation regions.
tundra biome in Alaska. The cliff-forming. Thornthwaite's formulation of potential evapotranspiration (pet) as a component of the climate system was revolutionary, with applications well beyond the realm of climate classification.
Koppen produced the most widely used climate classification system of the twenti eth century. He introduced his initial classification in and continued to refine.
Potential evapotranspiration (PET) is one of the inputs to the Palmer Drought Severity Index (PDSI). A common approach to calculating PDSI is to use the Thornthwaite method for estimating PET becau.  Over the past 50 years, Alaska has experienced a warming climate with longer growing seasons, increased potential evapotranspiration, and permafrost warming.
Research from the Seward Peninsula and Kenai Peninsula has demonstrated a substantial landscape‐level trend in the reduction of surface water and number of closed‐basin ponds.
The climate in Juneau and the southeast panhandle is a mid-latitude oceanic climate (Köppen climate classification Cfb) in the southern sections and an oceanic, marine subpolar climate (similar to Scotland, or Haida Gwaii), (Köppen Cfc) in the northern of the southern parts are temperate an annual basis, southern portions are both the wettest and warmest part of.
potential evapotranspiration (PE) The amount of water that would evaporate from the surface and be transpired by plants were the supply of water unlimited. It is calculated from the mean monthly temperature, with corrections for day length, and was devised by C.
Thornthwaite as part of his system of climate classification. parison of Six Potential Evapotranspiration Methods for Regional Use in the Southeastern United States.
Journal of the American Water Resources Associa-tion (JAWRA) 41(3) INTRODUCTION Although several variations of the definition exist, potential evapotranspiration (PET) can be generally defined as the amount of water that could evaporate. evapotranspiration measured by nonweighing lysimeters.
Their study used data from five sites in Tunisia. The climate at the five sites ranged from Mediterranean to hot desert, similar to the climate in this study.
For the Tunisia areas, they found that only the Penman and Turc methods gave acceptable estimates of potential evapotranspiration. Distinctions are made (Figure 4) between reference crop evapotranspiration (ET o), crop evapotranspiration under standard conditions (ET c) and crop evapotranspiration under non-standard conditions (ET c adj).ET o is a climatic parameter expressing the evaporation power of the atmosphere.
ET c refers to the evapotranspiration from excellently managed, large, well-watered fields that. Methodological differences in projected potential evapotranspiration Abstract: There is growing concern that the higher temperatures expected with climate change will exacerbate drought extent, duration and severity by enhancing evaporative demand.Yukon Water Availability Analysis.
An Assessment of the Potential Impacts of Climate Change on the Balance between Precipitation and Potential Evapotranspiration in the Yukon, Canada. Prepared for. The Northern Climate Exchange, Yukon College. by the. Scenarios Network. for Alaska and Arctic Planning (SNAP) University of Alaska Fairbanks.Average annual precipitation over the four-year study period was mm, and ranged from mm in LY4 to mm in LY3.
As discussed above, the long-term average annual precipitation for the region is mm (Shulski and Wendler, ), thus indicating that the study period precipitation was representative of the long term climatic average annual precipitation falling as snow was.