Which polarisation in microwave C-band is most valuable for observing soil moisture change?

05 June 2016 839 4 View

Remote calculations using ESA data products - which tools should I use?

04 May 2016 1,320 2 View

Disaggregation using linear dependence of radar backscatter change on soil moisture change - do you have any software recommendations?

I'm going to apply disaggregation algorithm described in the linked article. I'm going to use Sentinel-1 data as the high resolution data source. I thought about implementing mentioned algorithm...

04 May 2016 3,046 2 View

Is averaging of remote sensing data a source of the systematic bias?

Some of the remote sensing products are averages (or more precisely "composites", because they're not simple averages) of the instantaneous values for the satellite fly over time. An example of...

02 March 2016 5,900 2 View

Drought index SPEI why different time scale products have values for each month?

According to http://sac.csic.es/spei/home.html to calculate SPEI we use precipitation and potential evapotranspiration (PET): "the difference between the precipitation (P) and PET for the month i...

01 February 2016 5,077 6 View

Will cross-correlation between near surface and subsurface soil moisture be the same for different products?

Once precipitation fall into surface it affects surface soil moisture and after infiltration occurs, subsurface SM. Thus, I assume that both layers are always correlated, but with some shifts in...

31 December 2015 1,933 4 View

How does surface soil moisture change with depth?

In most (many?) articles dedicated to validate surface soil moisture products from ASCAT, SMOS or SMAP, authors compares SM estimates against in-situ measurement on fixed depth (for example 5 cm)....

07 August 2015 9,974 22 View

What is Integerized Sinusoidal (ISIN) projection?

Dear Researchers, I need to download LAI data set and transform it to the WGS84 (EPSG:4326). I found following resource:http://glcf.umd.edu/data/lai/ As I can see in the description, following...

03 April 2015 5,242 5 View

Are there any GLDAS database counterparts / equivalents?

Global Land Data Assimilation System (GLDAS) provides public access to the results of global-scale modelling using four land surface models (LSMs). GLDAS provides information about land surface...

01 January 1970 3,270 2 View

Are there any studies that use lagged remote sensing measurements of near-surface soil moisture for flood and/or drought monitoring?

In the literature, lagged measurements of near-surface SM in microwave band are related with root-zone soil moisture. Thus, I wonder if there are studies that relates them (lagged SM) with drought...

01 January 1970 1,933 3 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View