PUBLICACIÓN

Solar observations at the Coimbra Astronomical Observatory

Logo Open Access

ACCEDER A LA PUBLICACIÓN: Scopus Orcid

Lourenco A., Carvalho S., Barata T., Garcia A., Carrasco V., Peixinho N.

2019 Open Astronomy

Astronomy and Astrophysics (Q3), Space and Planetary Science (Q4)

JCR: 0.831

SJR: 0.303

CITAS

14

DOI

10.1515/astro-2019-0015

EID

2-s2.0-85073392862

EISSN

2543-6376

BIBTEX

@article{Louren_o_2019, doi = {10.1515/astro-2019-0015}, url = {https://doi.org/10.1515%2Fastro-2019-0015}, year = 2019, month = {jan}, publisher = {Walter de Gruyter {GmbH}}, volume = {28}, number = {1}, pages = {165--179}, author = {Ana Louren{\c{c}}o and Sara Carvalho and Teresa Barata and Adriana Garcia and V{\'{\i}}ctor Carrasco and Nuno Peixinho}, title = {Solar observations at the Coimbra Astronomical Observatory}, journal = {Open Astronomy}}

AUTORES DE LA UEX

Víctor Manuel Sánchez Carrasco

OTRAS PUBLICACIONES DE INTERÉS

A Critical Comment On The Claimed Relation Between The Solar Maximum Amplitude And Max-Max Cycle Length
The Anomalously Thundery Month Of June 1925 In Southwest Spain: Description And Synoptic Analysis
14c-Based Sunspot Numbers For The Last Millennium Encompass The Full Range Of Variability: Extreme Value Theory
The Anomalously Thundery Month Of June 1925 In Southwest Spain: Description And Synoptic Analysis
14c-Based Sunspot Numbers For The Last Millennium Encompass The Full Range Of Variability: Extreme Value Theory
Unreleased Sunspot Records By Hacki In 1671 During The Maunder Minimum
14c-Based Sunspot Numbers For The Last Millennium Encompass The Full Range Of Variability: Extreme Value Theory
Unreleased Sunspot Records By Hacki In 1671 During The Maunder Minimum
A Forgotten Aurora: Revisiting The 19 March 1950 Aurora Australis Through Historical Records
Unreleased Sunspot Records By Hacki In 1671 During The Maunder Minimum
A Forgotten Aurora: Revisiting The 19 March 1950 Aurora Australis Through Historical Records
Numerical Considerations In The Reconstruction Of Sunspot Numbers From Adf: A Precision Update
A Forgotten Aurora: Revisiting The 19 March 1950 Aurora Australis Through Historical Records
Numerical Considerations In The Reconstruction Of Sunspot Numbers From Adf: A Precision Update
Understanding Solar Activity After The Maunder Minimum: Sunspot Records By Rost And Alischer
Numerical Considerations In The Reconstruction Of Sunspot Numbers From Adf: A Precision Update
Understanding Solar Activity After The Maunder Minimum: Sunspot Records By Rost And Alischer
Assessing The Evolution Of Solar Cycle 25: A Weak-Moderate Cycle
Understanding Solar Activity After The Maunder Minimum: Sunspot Records By Rost And Alischer
Assessing The Evolution Of Solar Cycle 25: A Weak-Moderate Cycle
Are We Crossing A Minimum Of The Gleissberg Centennial Cycle? Multivariate Machine Learning-Based Prediction Of The Sunspot Number Using Different Proxies Of Solar Activity And Spectral Analysis
Assessing The Evolution Of Solar Cycle 25: A Weak-Moderate Cycle
Are We Crossing A Minimum Of The Gleissberg Centennial Cycle? Multivariate Machine Learning-Based Prediction Of The Sunspot Number Using Different Proxies Of Solar Activity And Spectral Analysis
Predicting Solar Cycle 26 Using The Polar Flux As A Precursor, Spectral Analysis, And Machine Learning: Crossing A Gleissberg Minimum?
Are We Crossing A Minimum Of The Gleissberg Centennial Cycle? Multivariate Machine Learning-Based Prediction Of The Sunspot Number Using Different Proxies Of Solar Activity And Spectral Analysis
Predicting Solar Cycle 26 Using The Polar Flux As A Precursor, Spectral Analysis, And Machine Learning: Crossing A Gleissberg Minimum?
Hemispheric Sunspot Number Prediction For Solar Cycles 25 And 26 Using Spectral Analysis And Machine Learning Techniques
Predicting Solar Cycle 26 Using The Polar Flux As A Precursor, Spectral Analysis, And Machine Learning: Crossing A Gleissberg Minimum?
Hemispheric Sunspot Number Prediction For Solar Cycles 25 And 26 Using Spectral Analysis And Machine Learning Techniques
An Overview Of Sunspot Observations In The Early Maunder Minimum: 1645–1659
Hemispheric Sunspot Number Prediction For Solar Cycles 25 And 26 Using Spectral Analysis And Machine Learning Techniques
An Overview Of Sunspot Observations In The Early Maunder Minimum: 1645–1659
Hemispheric Sunspot Numbers From The Astronomical Observatory Of The University Of Valencia (1940 – 1956)
An Overview Of Sunspot Observations In The Early Maunder Minimum: 1645–1659
Hemispheric Sunspot Numbers From The Astronomical Observatory Of The University Of Valencia (1940 – 1956)
A Critical Comment On “can Solar Cycle 25 Be A New Dalton Minimum?”
Hemispheric Sunspot Numbers From The Astronomical Observatory Of The University Of Valencia (1940 – 1956)
A Critical Comment On “can Solar Cycle 25 Be A New Dalton Minimum?”
Recalibration Of The Sunspot-Number: Status Report
A Critical Comment On “can Solar Cycle 25 Be A New Dalton Minimum?”
Recalibration Of The Sunspot-Number: Status Report
Solar Cycle 25 Will Be A Weak-Moderate Cycle: An Update
Recalibration Of The Sunspot-Number: Status Report
Solar Cycle 25 Will Be A Weak-Moderate Cycle: An Update
Prediction Of The Maximum Amplitude Of Solar Cycle 25 Using The Ascending Inflection Point
Solar Cycle 25 Will Be A Weak-Moderate Cycle: An Update
Prediction Of The Maximum Amplitude Of Solar Cycle 25 Using The Ascending Inflection Point
Three Scattered Sunspot Records In The Archive Of The Royal Astronomical Observatory Of The Spanish Navy (1789–1790)
Prediction Of The Maximum Amplitude Of Solar Cycle 25 Using The Ascending Inflection Point
Three Scattered Sunspot Records In The Archive Of The Royal Astronomical Observatory Of The Spanish Navy (1789–1790)
Solar Observations By Angelo Secchi. I. Digitization Of Original Documents And Analysis Of Group Numbers Over The Period Of 1853-1878
Three Scattered Sunspot Records In The Archive Of The Royal Astronomical Observatory Of The Spanish Navy (1789–1790)
Solar Observations By Angelo Secchi. I. Digitization Of Original Documents And Analysis Of Group Numbers Over The Period Of 1853-1878
Rediscovering The Observations Of Solar Prominences From 1906 To 1957 Recorded At The Madrid Astronomical Observatory
Solar Observations By Angelo Secchi. I. Digitization Of Original Documents And Analysis Of Group Numbers Over The Period Of 1853-1878
Rediscovering The Observations Of Solar Prominences From 1906 To 1957 Recorded At The Madrid Astronomical Observatory
Analysis Of Sunshine Duration And Cloud Cover Trends In Lisbon For The Period 1890–2018
Rediscovering The Observations Of Solar Prominences From 1906 To 1957 Recorded At The Madrid Astronomical Observatory
Analysis Of Sunshine Duration And Cloud Cover Trends In Lisbon For The Period 1890–2018
Relationship Between The Sunspot Number And Active Day Fraction: An Application For The Maunder Minimum
Analysis Of Sunshine Duration And Cloud Cover Trends In Lisbon For The Period 1890–2018
Relationship Between The Sunspot Number And Active Day Fraction: An Application For The Maunder Minimum
Erratum: Strong Evidence Of Low Levels Of Solar Activity During The Maunder Minimum (Monthly Notices Of The Royal Astronomical Society (2021) 504 (5199) Doi: 10.1093/mnras/stab1155)
Relationship Between The Sunspot Number And Active Day Fraction: An Application For The Maunder Minimum
Erratum: Strong Evidence Of Low Levels Of Solar Activity During The Maunder Minimum (Monthly Notices Of The Royal Astronomical Society (2021) 504 (5199) Doi: 10.1093/mnras/stab1155)
Hemispheric Sunspot Number From The Madrid Astronomical Observatory For The Period 1935-1986
Erratum: Strong Evidence Of Low Levels Of Solar Activity During The Maunder Minimum (Monthly Notices Of The Royal Astronomical Society (2021) 504 (5199) Doi: 10.1093/mnras/stab1155)
Hemispheric Sunspot Number From The Madrid Astronomical Observatory For The Period 1935-1986
A Sunspot Catalog By Rafael Carrasco At The Madrid Astronomical Observatory For The Period 1931 – 1933
Hemispheric Sunspot Number From The Madrid Astronomical Observatory For The Period 1935-1986
A Sunspot Catalog By Rafael Carrasco At The Madrid Astronomical Observatory For The Period 1931 – 1933
Revisiting Christoph Scheiner's Sunspot Records: A New Perspective On Solar Activity Of The Early Telescopic Era
A Sunspot Catalog By Rafael Carrasco At The Madrid Astronomical Observatory For The Period 1931 – 1933
Revisiting Christoph Scheiner's Sunspot Records: A New Perspective On Solar Activity Of The Early Telescopic Era
An Early Assessment Of The Forecast By The Solar Cycle 25 Prediction Panel
Revisiting Christoph Scheiner's Sunspot Records: A New Perspective On Solar Activity Of The Early Telescopic Era
An Early Assessment Of The Forecast By The Solar Cycle 25 Prediction Panel
Recovery Of Early Meteorological Records From Extremadura Region (Sw Iberia): The ‘clipastextrem’ (V1.0) Database
An Early Assessment Of The Forecast By The Solar Cycle 25 Prediction Panel
Recovery Of Early Meteorological Records From Extremadura Region (Sw Iberia): The ‘clipastextrem’ (V1.0) Database
A Catalog Of Faculae, Prominences, And Filaments For The Period 1929-1944 From The Astronomical Observatory Of The University Of Coimbra
Recovery Of Early Meteorological Records From Extremadura Region (Sw Iberia): The ‘clipastextrem’ (V1.0) Database
A Catalog Of Faculae, Prominences, And Filaments For The Period 1929-1944 From The Astronomical Observatory Of The University Of Coimbra
Sunmap: A Solar Image Processing Software For Obtaining Synoptic Maps
A Catalog Of Faculae, Prominences, And Filaments For The Period 1929-1944 From The Astronomical Observatory Of The University Of Coimbra
Sunmap: A Solar Image Processing Software For Obtaining Synoptic Maps
Number Of Sunspot Groups And Individual Sunspots Recorded By Tevel For The Period 1816-1836 In The Dalton Minimum
Sunmap: A Solar Image Processing Software For Obtaining Synoptic Maps
Number Of Sunspot Groups And Individual Sunspots Recorded By Tevel For The Period 1816-1836 In The Dalton Minimum
Johann Christoph Müller’s Sunspot Observations In 1719 – 1720: Snapshots Of The Immediate Aftermath Of The Maunder Minimum
Number Of Sunspot Groups And Individual Sunspots Recorded By Tevel For The Period 1816-1836 In The Dalton Minimum
Johann Christoph Müller’s Sunspot Observations In 1719 – 1720: Snapshots Of The Immediate Aftermath Of The Maunder Minimum
Sunspot Observations At The Eimmart Observatory And In Its Neighborhood During The Late Maunder Minimum (1681-1718)
Johann Christoph Müller’s Sunspot Observations In 1719 – 1720: Snapshots Of The Immediate Aftermath Of The Maunder Minimum
Sunspot Observations At The Eimmart Observatory And In Its Neighborhood During The Late Maunder Minimum (1681-1718)
Solar Cycle 25 Is Currently Very Similar To Solar Cycle 24
Sunspot Observations At The Eimmart Observatory And In Its Neighborhood During The Late Maunder Minimum (1681-1718)
Solar Cycle 25 Is Currently Very Similar To Solar Cycle 24
Analyses Of Early Sunspot Records By Jean Tarde (1615 – 1617) And Jan Smogulecki (1621 – 1625)
Solar Cycle 25 Is Currently Very Similar To Solar Cycle 24
Analyses Of Early Sunspot Records By Jean Tarde (1615 – 1617) And Jan Smogulecki (1621 – 1625)
Sunspot Catalog (1921-1935) And Area Series (1886-1940) From The Stonyhurst College Observatory
Analyses Of Early Sunspot Records By Jean Tarde (1615 – 1617) And Jan Smogulecki (1621 – 1625)
Sunspot Catalog (1921-1935) And Area Series (1886-1940) From The Stonyhurst College Observatory
Strong Evidence Of Low Levels Of Solar Activity During The Maunder Minimum
Sunspot Catalog (1921-1935) And Area Series (1886-1940) From The Stonyhurst College Observatory
Strong Evidence Of Low Levels Of Solar Activity During The Maunder Minimum
A Forgotten Sunspot Record During The Maunder Minimum (Jean Charles Gallet, 1677)
Strong Evidence Of Low Levels Of Solar Activity During The Maunder Minimum
A Forgotten Sunspot Record During The Maunder Minimum (Jean Charles Gallet, 1677)
Analysis Of Solar Diameter Measurements Made At The Basilica Of San Petronio During And After The Maunder Minimum
A Forgotten Sunspot Record During The Maunder Minimum (Jean Charles Gallet, 1677)
Analysis Of Solar Diameter Measurements Made At The Basilica Of San Petronio During And After The Maunder Minimum
A Reanalysis Of The Number Of Sunspot Groups Recorded By Pierre Gassendi In The Cycle Before The Maunder Minimum
Analysis Of Solar Diameter Measurements Made At The Basilica Of San Petronio During And After The Maunder Minimum
A Reanalysis Of The Number Of Sunspot Groups Recorded By Pierre Gassendi In The Cycle Before The Maunder Minimum
A Note On The Sunspot And Prominence Records Made By Angelo Secchi During The Period 1871-1875
A Reanalysis Of The Number Of Sunspot Groups Recorded By Pierre Gassendi In The Cycle Before The Maunder Minimum
A Note On The Sunspot And Prominence Records Made By Angelo Secchi During The Period 1871-1875
The Tornado Of Talavera De La Reina On September 3, 1880
A Note On The Sunspot And Prominence Records Made By Angelo Secchi During The Period 1871-1875
The Tornado Of Talavera De La Reina On September 3, 1880
The Sunspot Drawing Collection Of The National Solar Observatory At Sacramento Peak (1947–2004)
The Tornado Of Talavera De La Reina On September 3, 1880
The Sunspot Drawing Collection Of The National Solar Observatory At Sacramento Peak (1947–2004)
On The Use Of Naked-Eye Sunspot Observations During The Maunder Minimum
The Sunspot Drawing Collection Of The National Solar Observatory At Sacramento Peak (1947–2004)
On The Use Of Naked-Eye Sunspot Observations During The Maunder Minimum
Revisiting The Amplitude Of Solar Cycle 9: The Case Of Sunspot Observations By W.c. Bond
On The Use Of Naked-Eye Sunspot Observations During The Maunder Minimum
Revisiting The Amplitude Of Solar Cycle 9: The Case Of Sunspot Observations By W.c. Bond
Sunspot Records By Antonio Colla Just After The Dalton Minimum
Revisiting The Amplitude Of Solar Cycle 9: The Case Of Sunspot Observations By W.c. Bond
Sunspot Records By Antonio Colla Just After The Dalton Minimum
The Extreme Space Weather Event In 1903 October/november: An Outburst From The Quiet Sun
Sunspot Records By Antonio Colla Just After The Dalton Minimum
The Extreme Space Weather Event In 1903 October/november: An Outburst From The Quiet Sun
Sunspot Observations By Barnaba Oriani (1778 – 1779)
The Extreme Space Weather Event In 1903 October/november: An Outburst From The Quiet Sun
Sunspot Observations By Barnaba Oriani (1778 – 1779)
Soonspot: Software To Determine Areas And Sunspot Positions
Sunspot Observations By Barnaba Oriani (1778 – 1779)
Soonspot: Software To Determine Areas And Sunspot Positions
Number Of Sunspot Groups From The Galileo-Scheiner Controversy Revisited
Soonspot: Software To Determine Areas And Sunspot Positions
Number Of Sunspot Groups From The Galileo-Scheiner Controversy Revisited
Portuguese Eyewitness Accounts Of The Great Space Weather Event Of 1582
Number Of Sunspot Groups From The Galileo-Scheiner Controversy Revisited
Portuguese Eyewitness Accounts Of The Great Space Weather Event Of 1582
Solar Observations At The Coimbra Astronomical Observatory
Portuguese Eyewitness Accounts Of The Great Space Weather Event Of 1582
Solar Observations At The Coimbra Astronomical Observatory
Improving Sunspot Records: Misreading Of'rosa Ursina' By Scheiner
Solar Observations At The Coimbra Astronomical Observatory
Improving Sunspot Records: Misreading Of'rosa Ursina' By Scheiner
Sunspot Characteristics At The Onset Of The Maunder Minimum Based On The Observations Of Hevelius
Improving Sunspot Records: Misreading Of'rosa Ursina' By Scheiner
Sunspot Characteristics At The Onset Of The Maunder Minimum Based On The Observations Of Hevelius
Sunspot Observations By Charles Malapert During The Period 1618–1626: A Key Data Set To Understand Solar Activity Before The Maunder Minimum
Sunspot Characteristics At The Onset Of The Maunder Minimum Based On The Observations Of Hevelius
Sunspot Observations By Charles Malapert During The Period 1618–1626: A Key Data Set To Understand Solar Activity Before The Maunder Minimum
Eric Strach: Four Decades Of Detailed Synoptic Solar Observations (1969-2008)
Sunspot Observations By Charles Malapert During The Period 1618–1626: A Key Data Set To Understand Solar Activity Before The Maunder Minimum
Eric Strach: Four Decades Of Detailed Synoptic Solar Observations (1969-2008)
Two Debatable Cases For The Reconstruction Of The Solar Activity Around The Maunder Minimum: Malapert And Derham
Eric Strach: Four Decades Of Detailed Synoptic Solar Observations (1969-2008)
Two Debatable Cases For The Reconstruction Of The Solar Activity Around The Maunder Minimum: Malapert And Derham
Sunspot Catalogue Of The Observatory Of The University Of Coimbra (1929 – 1941)
Two Debatable Cases For The Reconstruction Of The Solar Activity Around The Maunder Minimum: Malapert And Derham
Sunspot Catalogue Of The Observatory Of The University Of Coimbra (1929 – 1941)
The Great Aurora Of January 1770 Observed In Spain
Sunspot Catalogue Of The Observatory Of The University Of Coimbra (1929 – 1941)
The Great Aurora Of January 1770 Observed In Spain
The Umbra-Penumbra Area Ratio Of Sunspots During The Maunder Minimum
The Great Aurora Of January 1770 Observed In Spain
The Umbra-Penumbra Area Ratio Of Sunspots During The Maunder Minimum
A Great Space Weather Event In February 1730
The Umbra-Penumbra Area Ratio Of Sunspots During The Maunder Minimum
A Great Space Weather Event In February 1730
A Curious History Of Sunspot Penumbrae: An Update
A Great Space Weather Event In February 1730
A Curious History Of Sunspot Penumbrae: An Update
Sunspot Observations Made By Hallaschka During The Dalton Minimum
A Curious History Of Sunspot Penumbrae: An Update
Sunspot Observations Made By Hallaschka During The Dalton Minimum
Could A Hexagonal Sunspot Have Been Observed During The Maunder Minimum?
Sunspot Observations Made By Hallaschka During The Dalton Minimum
Could A Hexagonal Sunspot Have Been Observed During The Maunder Minimum?
Changes In Heat Wave Characteristics Over Extremadura (Sw Spain)
Could A Hexagonal Sunspot Have Been Observed During The Maunder Minimum?
Changes In Heat Wave Characteristics Over Extremadura (Sw Spain)
Actividad Solar A Partir De Observaciones Antiguas De Manchas Solares
Changes In Heat Wave Characteristics Over Extremadura (Sw Spain)
Actividad Solar A Partir De Observaciones Antiguas De Manchas Solares
Analysing Spotless Days As Predictors Of Solar Activity From The New Sunspot Number
Actividad Solar A Partir De Observaciones Antiguas De Manchas Solares
Analysing Spotless Days As Predictors Of Solar Activity From The New Sunspot Number
Extreme Value Theory And The New Sunspot Number Series
Analysing Spotless Days As Predictors Of Solar Activity From The New Sunspot Number
Extreme Value Theory And The New Sunspot Number Series
Unusual Rainbows As Auroral Candidates: Another Point Of View
Extreme Value Theory And The New Sunspot Number Series
Unusual Rainbows As Auroral Candidates: Another Point Of View
Revisiting The Prediction Of Solar Activity Based On The Relationship Between The Solar Maximum Amplitude And Max–max Cycle Length
Unusual Rainbows As Auroral Candidates: Another Point Of View
Revisiting The Prediction Of Solar Activity Based On The Relationship Between The Solar Maximum Amplitude And Max–max Cycle Length
Revisiting The Prediction Of Solar Activity Based On The Relationship Between The Solar Maximum Amplitude And Max-Max Cycle Length
Revisiting The Prediction Of Solar Activity Based On The Relationship Between The Solar Maximum Amplitude And Max–max Cycle Length
Revisiting The Prediction Of Solar Activity Based On The Relationship Between The Solar Maximum Amplitude And Max-Max Cycle Length
The New Sunspot-Number Index And Solar-Cycle Characteristics
Revisiting The Prediction Of Solar Activity Based On The Relationship Between The Solar Maximum Amplitude And Max-Max Cycle Length
The New Sunspot-Number Index And Solar-Cycle Characteristics
A Revised Collection Of Sunspot Group Numbers
The New Sunspot-Number Index And Solar-Cycle Characteristics
A Revised Collection Of Sunspot Group Numbers
A Normalized Sunspot-Area Series Starting In 1832: An Update
A Revised Collection Of Sunspot Group Numbers
A Normalized Sunspot-Area Series Starting In 1832: An Update
Sunspot Observations During The Maunder Minimum From The Correspondence Of John Flamsteed
A Normalized Sunspot-Area Series Starting In 1832: An Update
Sunspot Observations During The Maunder Minimum From The Correspondence Of John Flamsteed
Monitoring The Solar Radius From The Royal Observatory Of The Spanish Navy Since 1773
Sunspot Observations During The Maunder Minimum From The Correspondence Of John Flamsteed
Monitoring The Solar Radius From The Royal Observatory Of The Spanish Navy Since 1773
Sunspots During The Maunder Minimum From Machina Coelestis By Hevelius
Monitoring The Solar Radius From The Royal Observatory Of The Spanish Navy Since 1773
Sunspots During The Maunder Minimum From Machina Coelestis By Hevelius
Equivalence Relations Between The Cortie And Zürich Sunspot Group Morphological Classifications
Sunspots During The Maunder Minimum From Machina Coelestis By Hevelius
Equivalence Relations Between The Cortie And Zürich Sunspot Group Morphological Classifications
Level And Length Of Cyclic Solar Activity During The Maunder Minimum As Deduced From The Active-Day Statistics
Equivalence Relations Between The Cortie And Zürich Sunspot Group Morphological Classifications
Level And Length Of Cyclic Solar Activity During The Maunder Minimum As Deduced From The Active-Day Statistics
A Methodology For Investigating Dust Model Performance Using Synergistic Earlinet/aeronet Dust Concentration Retrievals
Level And Length Of Cyclic Solar Activity During The Maunder Minimum As Deduced From The Active-Day Statistics
A Methodology For Investigating Dust Model Performance Using Synergistic Earlinet/aeronet Dust Concentration Retrievals
Sunspot Numbers And Areas From The Madrid Astronomical Observatory (1876 – 1986)
A Methodology For Investigating Dust Model Performance Using Synergistic Earlinet/aeronet Dust Concentration Retrievals
Sunspot Numbers And Areas From The Madrid Astronomical Observatory (1876 – 1986)
Sunspot Catalogue Of The Valencia Observatory(1920 – 1928)
Sunspot Numbers And Areas From The Madrid Astronomical Observatory (1876 – 1986)
Sunspot Catalogue Of The Valencia Observatory(1920 – 1928)
Forty Two Years Counting Spots: Solar Observations By D.e. Hadden During 1890-1931 Revisited
Sunspot Catalogue Of The Valencia Observatory(1920 – 1928)
Forty Two Years Counting Spots: Solar Observations By D.e. Hadden During 1890-1931 Revisited
A Critical Comment On The Claimed Relation Between The Solar Maximum Amplitude And Max-Max Cycle Length
Forty Two Years Counting Spots: Solar Observations By D.e. Hadden During 1890-1931 Revisited
A Critical Comment On The Claimed Relation Between The Solar Maximum Amplitude And Max-Max Cycle Length
The Anomalously Thundery Month Of June 1925 In Southwest Spain: Description And Synoptic Analysis
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