@article{fdi:010091366,
  title = {{E}nhancing the temporal resolution of water levels from altimetry using {D}-{I}n{SAR} : a case study of 10 {S}wedish {L}akes},
  author = {{A}minjafari, {S}. and {F}rappart, {F}. and {P}apa, {F}abrice and {B}rown, {I}. and {J}aramillo, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{L}akes provide societies and natural ecosystems with valuable services such as freshwater supply and flood control. {W}ater level changes in lakes reflect their natural responses to climatic and anthropogenic stressors; however, their monitoring is costly due to installation and maintenance requirements. {W}ith its advanced hardware and computational capabilities, altimetry has become a popular alternative to conventional in-situ gauging, although subject to the temporal availability of altimetric observations. {T}o further improve the temporal resolution of altimetric measurements, we here combine radar altimetry data with {D}ifferential {I}nterferometric {S}ynthetic {A}perture {R}adar ({D}-{I}n{SAR}), using ten lakes in {S}weden as a testing platform. {F}irst, we use {S}entinel-1{A} and {S}entinel-1{B} {SAR} images to generate consecutive six-day baseline interferograms across 2019. {T}hen, we accumulate the phase change of coherent pixels to construct the time series of {I}n{SAR}-derived water level anomalies. {F}inally, we retrieve altimetric observations from {S}entinel-3, estimate their mean and standard deviation, and apply them to the {D}-{I}n{SAR} standardized anomalies. {I}n this way, we build a water-level time series with more temporal observations. {I}n general, we find a strong agreement between water level estimates from the combination of {D}-{I}n{SAR} and {S}atellite {A}ltimetry ({DI}n{SA}lt) and in-situ observations in eight lakes ({C}oncordance {C}orrelation {C}oefficient - {CCC} >0.8) and moderate agreement in two lakes ({CCC} >0.57). {T}he applicability of {DI}n{SA}lt is limited to lakes with suitable conditions for double-bounce scattering, such as the presence of trees or marshes. {T}he accuracy of the water level estimates depends on the quality of the altimetry observations and the lake's width. {T}hese findings are important considering the recently launched {S}urface {W}ater and {O}cean {T}opography ({SWOT}) satellite, whose capabilities could expand our methodology's geographical applicability and reduce its reliance on ground measurements.},
  keywords = {{D}-{I}n{SAR} ; {L}ake water levels ; {S}atellite altimetry ; {DI}n{SA}lt ; {SUEDE}},
  booktitle = {},
  journal = {{S}cience of {R}emote {S}ensing},
  volume = {10},
  numero = {},
  pages = {100162 [15 p.]},
  ISSN = {2666-0172},
  year = {2024},
  DOI = {10.1016/j.srs.2024.100162},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091366},
}