Details:

Journal Title:
Journal of Applied Meteorology and Climatology
Personal Author:
Sharifnezhadazizi, Zahra ; Norouzi, Hamid ; Prakash, Satya ; Beale, Christopher ; Khanbilvardi, Reza
Sharifnezhadazizi, Zahra ; Norouzi, Hamid ; Prakash, Satya ; Beale, Christopher ; Khanbilvardi, Reza Less -
NOAA Program & Office:
CREST (Center for Earth System Sciences and Remote Sensing Technologies and Tech Center at City College of CUNY)
Description:
Diurnal variations of land surface temperature (LST) play a vital role in a wide range of applications such as climate change assessment, land–atmosphere interactions, and heat-related health issues in urban regions. This study uses 15 years (2003–17) of daily observations of LST Collection 6 from the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on board the Aqua and the Terra satellites. A spline interpolation method is used to estimate half-hourly global LST from the MODIS measurements. A preliminary assessment of interpolated LST with hourly ground-based observations over selected stations of North America shows bias and an error of less than 1 K. Results suggest that the present interpolation method is capable of capturing the diurnal variations of LST reasonably well for different land-cover types. The diurnal cycle of LST and time of occurrence of maximum temperature are computed from the spatially and temporally consistent interpolated diurnal LST data at a global scale. Regions with higher variability in the timing of maximum LST hours and diurnal amplitude are identified in this study. The global desert regions show generally small variability of the monthly mean diurnal LST range, whereas larger areas of the global land exhibit rather higher variability in the diurnal LST range during the study period. Moreover, the changes in diurnal temperature range for the study period are examined for distinct land-cover types. Analysis of the 15-yr time series of the diurnal LST record shows an overall decrease of 0.5 K in amplitude over the Northern Hemisphere. However, the diurnal LST range shows variant changes in the Southern Hemisphere.
Keywords:
[+]
Climatic Changes Remote Sensing
Source:
Journal of Applied Meteorology and Climatology
DOI:
https://doi.org/10.1175/JAMC-D-18-0256.1
Document Type:
Journal Article
Funding:
Grant no. NA16SEC4810008
Rights Information:
Other
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:f478fb32168974348c870c14aef641231aef734e200af1d2053b2b4d6e485ec8
Download URL:
https://repository.library.noaa.gov/view/noaa/27287/noaa_27287_DS1.pdf
File Type:

Supporting Files

• No Additional Files

More +